/* ==========================================================================
   INFOFIND WEB TOOL PORTAL - CSS STYLE SHEET
   ========================================================================== */

/* 1. DESIGN TOKENS & VARIABLES */
:root {
    --font-primary: 'Noto Sans KR', sans-serif;
    --font-display: 'Outfit', sans-serif;
    
    /* Light Mode Palette */
    --bg-app: #f4f6f9;
    --bg-sidebar: #ffffff;
    --bg-surface: #ffffff;
    --bg-surface-glass: rgba(255, 255, 255, 0.7);
    --border-glass: rgba(255, 255, 255, 0.4);
    
    --text-main: #1f2937;
    --text-muted: #6b7280;
    --text-inverse: #ffffff;
    
    --border-color: #e5e7eb;
    --input-bg: #f9fafb;
    --input-border: #d1d5db;
    --input-focus: #4f46e5;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Category Colors (Vibrant) */
    --clr-primary: #4f46e5;
    --clr-primary-hover: #4338ca;
    --clr-primary-light: rgba(79, 70, 229, 0.1);
    
    --clr-violet: #8b5cf6;
    --clr-violet-light: rgba(139, 92, 246, 0.12);
    --clr-blue: #3b82f6;
    --clr-blue-light: rgba(59, 130, 246, 0.12);
    --clr-green: #10b981;
    --clr-green-light: rgba(16, 185, 129, 0.12);
    --clr-amber: #f59e0b;
    --clr-amber-light: rgba(245, 158, 11, 0.12);
    --clr-teal: #14b8a6;
    --clr-teal-light: rgba(20, 184, 166, 0.12);
    --clr-indigo: #6366f1;
    --clr-indigo-light: rgba(99, 102, 241, 0.12);
    --clr-rose: #f43f5e;
    --clr-rose-light: rgba(244, 63, 94, 0.12);
    
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

/* Dark Mode Palette overrides */
body.dark-mode {
    --bg-app: #0f172a;
    --bg-sidebar: #1e293b;
    --bg-surface: #1e293b;
    --bg-surface-glass: rgba(30, 41, 59, 0.7);
    --border-glass: rgba(255, 255, 255, 0.05);
    
    --text-main: #f3f4f6;
    --text-muted: #9ca3af;
    --text-inverse: #0f172a;
    
    --border-color: #334155;
    --input-bg: #0f172a;
    --input-border: #475569;
    --input-focus: #818cf8;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
    
    --clr-primary-light: rgba(129, 140, 248, 0.15);
}

/* 2. BASE RESET & INITIAL SETUP */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    outline: none;
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg-app);
    color: var(--text-main);
    overflow-x: hidden;
    transition: background-color var(--transition-normal), color var(--transition-normal);
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: inherit;
}

input, button, select, textarea {
    font-family: inherit;
    font-size: inherit;
    color: inherit;
}

/* Scrollbars */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: var(--text-muted);
    opacity: 0.3;
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--clr-primary);
}

/* 3. LAYOUT STRUCTURE */
.app-container {
    display: flex;
    min-height: 100vh;
    width: 100vw;
}

/* Sidebar Navigation */
.sidebar {
    width: 280px;
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 100;
    transition: transform var(--transition-normal), background-color var(--transition-normal), border-color var(--transition-normal);
}

.sidebar-header {
    padding: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 22px;
    color: var(--text-main);
}

.logo-icon {
    background: linear-gradient(135deg, var(--clr-primary), var(--clr-indigo));
    color: var(--text-inverse);
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

.logo-text span {
    color: var(--clr-primary);
    font-weight: 500;
    font-size: 14px;
    margin-left: 2px;
}

.sidebar-close-btn {
    display: none;
    background: transparent;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: var(--text-muted);
}

.sidebar-menu {
    flex: 1;
    overflow-y: auto;
    padding: 10px 16px;
}

.menu-category {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--text-muted);
    padding: 24px 12px 8px;
    font-weight: 700;
}

.menu-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border-radius: var(--radius-md);
    color: var(--text-main);
    font-weight: 500;
    margin-bottom: 4px;
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.menu-item i {
    font-size: 18px;
    width: 24px;
    text-align: center;
}

.menu-item:hover {
    background-color: var(--clr-primary-light);
    color: var(--clr-primary);
}

.menu-item.active {
    background-color: var(--clr-primary);
    color: var(--text-inverse);
}

.sidebar-footer {
    padding: 20px 24px;
    border-top: 1px solid var(--border-color);
}

.footer-desc {
    font-size: 11px;
    color: var(--text-muted);
    line-height: 1.5;
    margin-bottom: 8px;
}

.footer-copyright {
    font-size: 10px;
    font-weight: 600;
    color: var(--text-muted);
    font-family: var(--font-display);
}

/* Main Content Wrapper */
.main-wrapper {
    flex: 1;
    margin-left: 280px;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    min-width: 0; /* Prevents flex items from overflowing */
}

/* Header */
.top-header {
    height: 70px;
    background-color: var(--bg-sidebar);
    border-bottom: 1px solid var(--border-color);
    padding: 0 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 90;
    transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 20px;
    flex: 1;
    max-width: 600px;
}

.menu-toggle-btn {
    display: none;
    background: transparent;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: var(--text-main);
}

.search-box {
    position: relative;
    width: 100%;
}

.search-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.search-box input {
    width: 100%;
    padding: 10px 16px 10px 48px;
    border: 1px solid var(--input-border);
    border-radius: 50px;
    background-color: var(--input-bg);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.search-box input:focus {
    border-color: var(--input-focus);
    box-shadow: 0 0 0 3px var(--clr-primary-light);
}

.theme-toggle-btn {
    background: var(--clr-primary-light);
    border: none;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--clr-primary);
    font-size: 18px;
    transition: transform var(--transition-normal), background-color var(--transition-normal);
}

.theme-toggle-btn:hover {
    transform: scale(1.05);
    background-color: var(--clr-primary);
    color: var(--text-inverse);
}

/* 4. MAIN CONTENT AREA */
.main-content {
    flex: 1;
    padding: 40px;
    overflow-y: auto;
}

.content-section {
    display: none;
    animation: fadeIn var(--transition-slow);
}

.content-section.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 5. DASHBOARD LAYOUT & DESIGN */
.welcome-banner {
    background: linear-gradient(135deg, #4f46e5, #6366f1);
    color: var(--text-inverse);
    padding: 40px;
    border-radius: var(--radius-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.welcome-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 300px;
    height: 300px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    pointer-events: none;
}

.welcome-text h1 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 12px;
}

.welcome-text p {
    font-size: 15px;
    opacity: 0.9;
    line-height: 1.6;
    max-width: 800px;
}

.welcome-badge {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.25);
    padding: 16px 24px;
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    font-size: 13px;
}

.welcome-badge i {
    font-size: 28px;
}

.dashboard-category-section {
    margin-bottom: 40px;
}

.section-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.section-title i {
    color: var(--clr-primary);
}

.badge-secure {
    font-size: 12px;
    font-weight: 600;
    background-color: var(--clr-rose-light);
    color: var(--clr-rose);
    padding: 4px 10px;
    border-radius: 50px;
    margin-left: 10px;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}
.badge-secure.bg-orange {
    color: #ffffff;
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}

.tool-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    display: flex;
    gap: 20px;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--clr-primary);
}

.card-icon {
    width: 54px;
    height: 54px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    flex-shrink: 0;
}

.card-content {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.card-content h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-main);
}

.card-content p {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.5;
}

.card-tag {
    font-size: 11px;
    font-weight: 600;
    align-self: flex-start;
    padding: 3px 8px;
    border-radius: 4px;
    margin-top: 4px;
}

/* Category Accent Classes */
.theme-violet { background-color: var(--clr-violet-light); color: var(--clr-violet); }
.tag-violet { background-color: var(--clr-violet-light); color: var(--clr-violet); }

.theme-blue { background-color: var(--clr-blue-light); color: var(--clr-blue); }
.tag-blue { background-color: var(--clr-blue-light); color: var(--clr-blue); }

.theme-amber { background-color: var(--clr-amber-light); color: var(--clr-amber); }
.tag-amber { background-color: var(--clr-amber-light); color: var(--clr-amber); }

.theme-green { background-color: var(--clr-green-light); color: var(--clr-green); }
.tag-green { background-color: var(--clr-green-light); color: var(--clr-green); }

.theme-teal { background-color: var(--clr-teal-light); color: var(--clr-teal); }
.tag-teal { background-color: var(--clr-teal-light); color: var(--clr-teal); }

.theme-indigo { background-color: var(--clr-indigo-light); color: var(--clr-indigo); }
.tag-indigo { background-color: var(--clr-indigo-light); color: var(--clr-indigo); }

.theme-rose { background-color: var(--clr-rose-light); color: var(--clr-rose); }
.tag-rose { background-color: var(--clr-rose-light); color: var(--clr-rose); }
.text-rose { color: var(--clr-rose) !important; }

/* Dashboard search empty state */
.search-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    text-align: center;
    color: var(--text-muted);
}
.search-empty-state i {
    font-size: 48px;
    margin-bottom: 16px;
}
.search-empty-state h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-main);
}
.hidden {
    display: none !important;
}

/* 6. GENERAL TOOL STYLING WORKSPACES */
.tool-page-header {
    margin-bottom: 30px;
}
.category-indicator {
    font-size: 11px;
    font-weight: 700;
    color: var(--text-inverse);
    padding: 4px 10px;
    border-radius: 50px;
    text-transform: uppercase;
    display: inline-block;
    margin-bottom: 12px;
}
.bg-violet { background-color: var(--clr-violet); }
.bg-blue { background-color: var(--clr-blue); }
.bg-amber { background-color: var(--clr-amber); }
.bg-green { background-color: var(--clr-green); }
.bg-teal { background-color: var(--clr-teal); }
.bg-indigo { background-color: var(--clr-indigo); }
.bg-rose { background-color: var(--clr-rose); }

.tool-page-header h1 {
    font-size: 24px;
    font-weight: 800;
    margin-bottom: 6px;
}
.tool-page-header p {
    font-size: 14px;
    color: var(--text-muted);
}

.glass-card {
    background-color: var(--bg-surface-glass);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: 30px;
    box-shadow: var(--shadow-md);
    transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}
.btn-primary {
    background-color: var(--clr-primary);
    color: var(--text-inverse);
}
.btn-primary:hover {
    background-color: var(--clr-primary-hover);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}
.btn-primary:active {
    transform: scale(0.98);
}
.btn-secondary {
    background-color: var(--input-bg);
    border: 1px solid var(--input-border);
    color: var(--text-main);
}
.btn-secondary:hover {
    background-color: var(--border-color);
}
.btn-full-width {
    width: 100%;
}

/* Tool layout: Main panel and sidebar panel split */
.tool-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 28px;
    align-items: start;
}

@media (max-width: 1024px) {
    .tool-layout {
        grid-template-columns: 1fr;
    }
}

/* Character Counter specific styling */
.textarea-container {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.textarea-container textarea {
    width: 100%;
    height: 350px;
    padding: 20px;
    border-radius: var(--radius-md);
    border: 1px solid var(--input-border);
    background-color: var(--input-bg);
    resize: vertical;
    font-size: 15px;
    line-height: 1.6;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.textarea-container textarea:focus {
    border-color: var(--clr-violet);
    box-shadow: 0 0 0 3px var(--clr-violet-light);
}
.textarea-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

.result-summary-card {
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.result-summary-card h3, .density-card h3 {
    font-size: 15px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 8px;
}
.counter-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}
.counter-item {
    background-color: var(--bg-app);
    padding: 16px;
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    position: relative;
    border: 1px solid var(--border-color);
}
.counter-label {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 6px;
}
.counter-value {
    font-size: 22px;
    font-family: var(--font-display);
    font-weight: 800;
    line-height: 1;
}
.counter-unit {
    font-size: 11px;
    position: absolute;
    right: 16px;
    bottom: 18px;
    color: var(--text-muted);
}
.small-desc {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 4px;
    margin-bottom: 12px;
}
.density-list {
    list-style: none;
    max-height: 200px;
    overflow-y: auto;
}
.density-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    border-bottom: 1px solid var(--border-color);
    font-size: 13px;
}
.density-list li:last-child {
    border-bottom: none;
}
.density-keyword {
    font-weight: 500;
}
.density-count-bar {
    display: flex;
    align-items: center;
    gap: 8px;
}
.density-bar-fill {
    width: 60px;
    height: 6px;
    background-color: var(--clr-violet-light);
    border-radius: 10px;
    position: relative;
    overflow: hidden;
}
.density-bar-fill div {
    height: 100%;
    background-color: var(--clr-violet);
    border-radius: 10px;
}
.empty-list-msg {
    color: var(--text-muted);
    font-size: 13px;
    padding: 20px 0;
    text-align: center;
}

/* 7. CALCULATOR PAGES STYLE */
.calculator-container {
    display: flex;
    flex-direction: column;
    gap: 30px;
}
.calc-block {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.calc-block h3 {
    font-size: 15px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 8px;
}
.calc-row {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 600;
    flex-wrap: wrap;
}
.calc-row input {
    padding: 10px 14px;
    border: 1px solid var(--input-border);
    border-radius: var(--radius-sm);
    background-color: var(--input-bg);
    width: 140px;
    transition: border-color var(--transition-fast);
}
.calc-row input:focus {
    border-color: var(--clr-blue);
}
.btn-calc {
    padding: 10px 20px;
}
.calc-result {
    font-size: 14px;
    font-weight: 700;
    padding: 16px;
    background-color: var(--bg-app);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--clr-blue);
}

/* Date calculator additions */
#date-calc .calc-result {
    border-left-color: var(--clr-amber);
}
#date-calc input:focus {
    border-color: var(--clr-amber);
}
.calc-row-wrap {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    font-weight: 600;
}
.calc-row-wrap input[type="date"], .calc-row-wrap select {
    padding: 10px 14px;
    border: 1px solid var(--input-border);
    border-radius: var(--radius-sm);
    background-color: var(--input-bg);
    transition: border-color var(--transition-fast);
}
.dday-list-wrapper {
    margin-top: 10px;
}
.dday-list-wrapper h4 {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-muted);
    margin-bottom: 12px;
}
.dday-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
}
.dday-card {
    background-color: var(--bg-app);
    padding: 16px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 100px;
    position: relative;
}
.dday-card.placeholder {
    grid-column: 1 / -1;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 13px;
    padding: 30px;
    border-style: dashed;
}
.dday-card-title {
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 6px;
    padding-right: 20px;
}
.dday-card-value {
    font-size: 24px;
    font-weight: 800;
    font-family: var(--font-display);
    color: var(--clr-amber);
}
.dday-card-date {
    font-size: 10px;
    color: var(--text-muted);
    margin-top: 6px;
}
.btn-delete-dday {
    position: absolute;
    top: 12px;
    right: 12px;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    transition: color var(--transition-fast);
}
.btn-delete-dday:hover {
    color: var(--clr-rose);
}

/* Financial calculator stack rules */
.calc-row-stack {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.form-group-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}
.form-item {
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.form-item label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
}
.form-item input, .form-item select {
    padding: 12px;
    border: 1px solid var(--input-border);
    border-radius: var(--radius-sm);
    background-color: var(--input-bg);
}
.btn-calc-full {
    margin-top: 8px;
}
.calc-result-box {
    margin-top: 10px;
    background-color: var(--bg-app);
    padding: 20px;
    border-radius: var(--radius-md);
    border-left: 4px solid var(--clr-blue);
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.result-row {
    display: flex;
    justify-content: space-between;
    font-size: 14px;
    font-weight: 500;
}
.result-row.highlight {
    font-size: 16px;
    font-weight: 700;
    border-top: 1px dashed var(--border-color);
    padding-top: 10px;
    color: var(--clr-blue);
}

/* 8. PASSWORD GENERATOR & PICKER OPTIONS */
.password-output-wrapper {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
}
.password-output-wrapper input {
    flex: 1;
    padding: 14px 20px;
    font-size: 18px;
    font-weight: 700;
    font-family: var(--font-display);
    letter-spacing: 1.5px;
    border-radius: var(--radius-md);
    border: 1px solid var(--input-border);
    background-color: var(--input-bg);
    text-align: center;
}
.password-output-wrapper input:focus {
    border-color: var(--clr-green);
}
.strength-meter {
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
}
.strength-bar {
    flex: 1;
    height: 6px;
    background-color: var(--border-color);
    border-radius: 10px;
    position: relative;
    overflow: hidden;
}
.strength-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 0;
    border-radius: 10px;
    transition: width var(--transition-normal), background-color var(--transition-normal);
}
.strength-bar.weak::after { width: 33%; background-color: var(--clr-rose); }
.strength-bar.medium::after { width: 66%; background-color: var(--clr-amber); }
.strength-bar.strong::after { width: 100%; background-color: var(--clr-green); }

.strength-text {
    font-size: 12px;
    font-weight: 700;
    min-width: 80px;
}

.password-settings {
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.setting-row {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.setting-row label {
    font-size: 13px;
    font-weight: 700;
}
.settings-checkboxes {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

/* Custom Checkbox Container */
.checkbox-container {
    display: block;
    position: relative;
    padding-left: 28px;
    margin-bottom: 4px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    user-select: none;
}
.checkbox-container input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}
.checkmark {
    position: absolute;
    top: 0;
    left: 0;
    height: 18px;
    width: 18px;
    border-radius: 4px;
    border: 1px solid var(--input-border);
    background-color: var(--input-bg);
}
.checkbox-container:hover input ~ .checkmark {
    border-color: var(--clr-green);
}
.checkbox-container input:checked ~ .checkmark {
    background-color: var(--clr-green);
    border-color: var(--clr-green);
}
.checkmark:after {
    content: "";
    position: absolute;
    display: none;
}
.checkbox-container input:checked ~ .checkmark:after {
    display: block;
}
.checkbox-container .checkmark:after {
    left: 5px;
    top: 2px;
    width: 4px;
    height: 8px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.picker-inputs {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.picker-inputs textarea {
    width: 100%;
    padding: 12px;
    border-radius: var(--radius-md);
    border: 1px solid var(--input-border);
    background-color: var(--input-bg);
    resize: none;
}
.picker-inputs textarea:focus {
    border-color: var(--clr-green);
}
.picker-settings {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.picker-settings label {
    font-size: 13px;
    font-weight: 600;
}
.picker-settings input {
    width: 70px;
    padding: 8px;
    border: 1px solid var(--input-border);
    border-radius: var(--radius-sm);
    background-color: var(--input-bg);
    text-align: center;
}
.picker-result-box {
    margin-top: 20px;
    border-top: 1px dashed var(--border-color);
    padding-top: 20px;
}
.picker-result-box h4 {
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 10px;
}
.picker-result-box ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.picker-result-box li {
    background-color: var(--clr-green-light);
    color: var(--clr-green);
    font-weight: 700;
    padding: 10px 14px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: 8px;
    animation: bounceIn 0.3s ease;
}
@keyframes bounceIn {
    0% { transform: scale(0.9); opacity: 0; }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); opacity: 1; }
}

/* 9. SMART UNIT CONVERTER LAYOUT */
.unit-converter-wrapper {
    padding: 0;
    overflow: hidden;
}
.converter-tabs {
    display: flex;
    background-color: var(--bg-app);
    border-bottom: 1px solid var(--border-color);
}
.tab-btn {
    flex: 1;
    border: none;
    background: transparent;
    padding: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color var(--transition-fast), color var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-muted);
}
.tab-btn:hover {
    color: var(--clr-teal);
    background-color: var(--clr-teal-light);
}
.tab-btn.active {
    color: var(--text-inverse);
    background-color: var(--clr-teal);
}
.converter-body {
    padding: 40px 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}
.unit-group {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.unit-group label {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-muted);
}
.input-select-pair {
    display: flex;
    border: 1px solid var(--input-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    background-color: var(--input-bg);
    transition: border-color var(--transition-fast);
}
.input-select-pair:focus-within {
    border-color: var(--clr-teal);
}
.input-select-pair input {
    flex: 1;
    border: none;
    padding: 14px;
    background: transparent;
    font-size: 16px;
    font-weight: 600;
}
.input-select-pair select {
    border: none;
    border-left: 1px solid var(--border-color);
    padding: 14px;
    background-color: var(--bg-surface);
    font-weight: 500;
    cursor: pointer;
}
.converter-arrow {
    font-size: 24px;
    color: var(--clr-teal);
}
.unit-tips {
    padding: 20px 30px;
    background-color: var(--bg-app);
    border-top: 1px solid var(--border-color);
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.6;
}

@media (max-width: 768px) {
    .converter-body {
        flex-direction: column;
    }
    .converter-arrow {
        transform: rotate(90deg);
    }
    .converter-tabs {
        flex-wrap: wrap;
    }
    .tab-btn {
        flex: unset;
        width: 50%;
    }
}

/* 10. QR CODE PREVIEW LAYOUT */
.qr-result-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}
.qr-code-wrapper {
    background-color: #ffffff;
    padding: 20px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 256px;
    height: 256px;
}
#qrcode img {
    max-width: 100%;
}
.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 18px;
}
.form-group label {
    font-size: 13px;
    font-weight: 700;
}
.form-group input {
    padding: 12px;
    border: 1px solid var(--input-border);
    border-radius: var(--radius-sm);
    background-color: var(--input-bg);
}
.form-group input:focus {
    border-color: var(--clr-indigo);
}
#qr-generator input[type="color"] {
    width: 100%;
    height: 46px;
    padding: 4px;
    cursor: pointer;
    border-radius: var(--radius-sm);
}

/* ==================== 11. PDF WORKSPACE STYLING ==================== */
.pdf-workspace {
    display: flex;
    flex-direction: column;
    gap: 24px;
}
.pdf-upload-zone {
    border: 2px dashed var(--input-border);
    border-radius: var(--radius-lg);
    padding: 60px 40px;
    text-align: center;
    background-color: var(--input-bg);
    cursor: pointer;
    transition: background-color var(--transition-fast), border-color var(--transition-fast);
    position: relative;
}
.pdf-upload-zone:hover, .pdf-upload-zone.dragover {
    border-color: var(--clr-rose);
    background-color: var(--clr-rose-light);
}
.pdf-upload-zone i {
    font-size: 48px;
    color: var(--clr-rose);
    margin-bottom: 18px;
}
.pdf-upload-zone h3 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 8px;
}
.pdf-upload-zone p {
    font-size: 13px;
    color: var(--text-muted);
}
.file-hidden-input {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.pdf-action-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--bg-app);
    padding: 16px 24px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}
.pdf-action-bar .info-text {
    font-weight: 700;
    font-size: 14px;
}
.pdf-action-bar .actions {
    display: flex;
    gap: 10px;
}

.pdf-list-container {
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.pdf-list-container h4 {
    font-size: 14px;
    font-weight: 700;
}
.pdf-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.pdf-list-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 14px 20px;
    animation: slideUp var(--transition-fast);
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.pdf-item-left {
    display: flex;
    align-items: center;
    gap: 14px;
    min-width: 0;
}
.pdf-item-index {
    width: 24px;
    height: 24px;
    background-color: var(--clr-rose);
    color: var(--text-inverse);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 700;
}
.pdf-item-icon {
    font-size: 20px;
    color: var(--clr-rose);
}
.pdf-item-title {
    font-size: 13px;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 350px;
}
.pdf-item-meta {
    font-size: 11px;
    color: var(--text-muted);
}
.pdf-item-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}
.btn-icon {
    background: transparent;
    border: none;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-muted);
    transition: background-color var(--transition-fast), color var(--transition-fast);
}
.btn-icon:hover {
    background-color: var(--bg-app);
    color: var(--text-main);
}
.btn-icon.delete:hover {
    background-color: var(--clr-rose-light);
    color: var(--clr-rose);
}

/* PDF process panel (Split, Rotate, etc.) */
.pdf-process-box {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    background-color: var(--bg-surface);
    overflow: hidden;
    animation: fadeIn var(--transition-normal);
}
.pdf-meta-info {
    display: flex;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-app);
    gap: 16px;
}
.pdf-meta-info .file-icon {
    font-size: 24px;
    color: var(--clr-rose);
}
.pdf-meta-info .file-details {
    display: flex;
    flex-direction: column;
    flex: 1;
}
.pdf-meta-info .file-name {
    font-size: 14px;
    font-weight: 700;
}
.pdf-meta-info .file-page-count {
    font-size: 11px;
    color: var(--text-muted);
}
.btn-close {
    background: transparent;
    border: none;
    font-size: 18px;
    cursor: pointer;
    color: var(--text-muted);
}
.pdf-options-section {
    padding: 30px 24px;
}
.pdf-options-section h3 {
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 16px;
}
.split-options-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

/* Radio Button Design */
.radio-container {
    display: flex;
    flex-direction: column;
    padding: 16px 20px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: var(--input-bg);
    cursor: pointer;
    position: relative;
    user-select: none;
    transition: border-color var(--transition-fast), background-color var(--transition-fast);
}
.radio-container input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}
.radio-container:has(input:checked) {
    border-color: var(--clr-rose);
    background-color: var(--clr-rose-light);
}
.radio-label {
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 4px;
}
.radio-desc {
    font-size: 11px;
    color: var(--text-muted);
}
.mt-2 { margin-top: 8px !important; }
.mt-3 { margin-top: 16px !important; }
.mt-4 { margin-top: 24px !important; }
.input-helper {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 6px;
}

/* Rotate settings option buttons */
.rotate-options {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}
.rotate-option-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 20px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    background-color: var(--input-bg);
    cursor: pointer;
    transition: border-color var(--transition-fast), background-color var(--transition-fast);
}
.rotate-option-btn i {
    font-size: 24px;
    color: var(--text-muted);
}
.rotate-option-btn.active {
    border-color: var(--clr-rose);
    background-color: var(--clr-rose-light);
}
.rotate-option-btn.active i {
    color: var(--clr-rose);
}
.rotate-option-btn span {
    font-size: 13px;
    font-weight: 600;
}

/* Password eye toggler in Protect PDF */
.password-input-toggle {
    display: flex;
    position: relative;
}
.password-input-toggle input {
    width: 100%;
    padding: 12px 48px 12px 12px;
    border: 1px solid var(--input-border);
    border-radius: var(--radius-sm);
    background-color: var(--input-bg);
}
.password-input-toggle input:focus {
    border-color: var(--clr-rose);
}
.btn-toggle-eye {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
}

/* Image to PDF options and elements */
.imgpdf-options-bar {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    background-color: var(--bg-app);
    padding: 16px 24px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}
.imgpdf-options-bar select {
    padding: 10px;
    border: 1px solid var(--input-border);
    border-radius: var(--radius-sm);
    background-color: var(--bg-surface);
}
.pdf-list-item-img {
    width: 50px;
    height: 50px;
    object-fit: cover;
    border-radius: 4px;
    border: 1px solid var(--border-color);
}

/* ==================== 12. DYNAMIC TOAST NOTIFICATIONS ==================== */
.toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 1000;
}
.toast {
    background-color: var(--bg-surface);
    border-left: 4px solid var(--clr-primary);
    box-shadow: var(--shadow-xl);
    padding: 16px 24px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 13px;
    font-weight: 600;
    min-width: 250px;
    transform: translateX(120%);
    transition: transform var(--transition-normal);
}
.toast.active {
    transform: translateX(0);
}
.toast.success { border-left-color: var(--clr-green); }
.toast.error { border-left-color: var(--clr-rose); }
.toast.info { border-left-color: var(--clr-blue); }

.toast-icon {
    font-size: 16px;
}
.toast.success .toast-icon { color: var(--clr-green); }
.toast.error .toast-icon { color: var(--clr-rose); }
.toast.info .toast-icon { color: var(--clr-blue); }

/* ==================== 13. RESPONSIVE MEDIA RULES ==================== */
@media (max-width: 991px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.open {
        transform: translateX(0);
    }
    .sidebar-close-btn {
        display: block;
    }
    .main-wrapper {
        margin-left: 0;
    }
    .menu-toggle-btn {
        display: block;
    }
    .top-header {
        padding: 0 20px;
    }
    .main-content {
        padding: 24px;
    }
    .welcome-banner {
        padding: 24px;
        flex-direction: column;
        align-items: flex-start;
        gap: 20px;
    }
    .welcome-badge {
        width: 100%;
        flex-direction: row;
        justify-content: center;
        gap: 10px;
    }
    .split-options-grid {
        grid-template-columns: 1fr;
    }
    .form-group-row {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================================
   14. SEO EMBED MODE STYLES
   ========================================================================== */
body.embed-mode {
    background-color: transparent !important;
}
body.embed-mode .sidebar {
    display: none !important;
}
body.embed-mode .top-header {
    display: none !important;
}
body.embed-mode .main-wrapper {
    margin-left: 0 !important;
    min-height: auto !important;
}
body.embed-mode .main-content {
    padding: 10px 0 !important;
}
body.embed-mode .content-section {
    animation: none !important;
}
body.embed-mode .glass-card {
    border-radius: var(--radius-md) !important;
    box-shadow: none !important;
    background-color: var(--bg-surface) !important;
    border: 1px solid var(--border-color) !important;
    padding: 20px !important;
}
body.embed-mode .welcome-banner {
    display: none !important;
}

/* ==========================================================================
   15. ORANGE CATEGORY & IMAGE TOOLS STYLING
   ========================================================================== */
:root {
    --clr-orange: #f97316;
    --clr-orange-light: rgba(249, 115, 22, 0.12);
}

.theme-orange { background-color: var(--clr-orange-light); color: var(--clr-orange); }
.tag-orange { background-color: var(--clr-orange-light); color: var(--clr-orange); }
.bg-orange { background-color: var(--clr-orange); }

/* Dropzone for single image tools */
.image-upload-zone {
    border: 2px dashed var(--input-border);
    border-radius: var(--radius-lg);
    padding: 50px 30px;
    text-align: center;
    background-color: var(--input-bg);
    cursor: pointer;
    transition: background-color var(--transition-fast), border-color var(--transition-fast);
    position: relative;
    margin-bottom: 20px;
}
.image-upload-zone:hover, .image-upload-zone.dragover {
    border-color: var(--clr-orange);
    background-color: var(--clr-orange-light);
}
.image-upload-zone i {
    font-size: 44px;
    color: var(--clr-orange);
    margin-bottom: 14px;
}
.image-upload-zone h3 {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 6px;
}
.image-upload-zone p {
    font-size: 12px;
    color: var(--text-muted);
}

/* Canvas previews */
.image-workspace-canvas {
    width: 100%;
    height: 380px;
    background-color: var(--bg-app);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
    padding: 16px;
}
.image-workspace-canvas img, .image-workspace-canvas canvas {
    max-width: 100%;
    max-height: 340px;
    object-fit: contain;
    border-radius: 4px;
    box-shadow: var(--shadow-sm);
}

.image-details-box {
    margin-top: 12px;
    font-size: 12px;
    color: var(--text-muted);
    display: flex;
    justify-content: space-between;
    font-weight: 600;
}

.slider-container {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 20px;
}
.slider-label {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    font-weight: 700;
}
.slider-container input[type="range"] {
    width: 100%;
    height: 6px;
    background-color: var(--border-color);
    border-radius: 5px;
    outline: none;
    accent-color: var(--clr-orange);
    cursor: pointer;
}

.image-rotation-controls {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    margin-bottom: 18px;
}
.image-rotation-controls .btn-secondary {
    padding: 10px 5px;
    font-size: 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

/* ==========================================================================
   16. SEO FAQ SECTION STYLING
   ========================================================================== */
.seo-faq-section {
    margin-top: 50px;
    border-top: 1px solid var(--border-color);
    padding-top: 40px;
}
.seo-faq-section h3 {
    font-size: 17px;
    font-weight: 800;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-main);
}
.seo-faq-section h3 i {
    color: var(--clr-primary);
}
.faq-accordion {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.faq-item {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    transition: background-color var(--transition-normal), border-color var(--transition-normal);
}
.faq-question {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.faq-question i {
    color: var(--clr-primary);
    font-size: 16px;
}
.faq-answer {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.7;
}
.faq-answer ol, .faq-answer ul {
    margin-top: 8px;
    padding-left: 20px;
}
.faq-answer li {
    margin-bottom: 4px;
}
body.dark-mode .faq-item {
    background-color: var(--bg-sidebar);
}

/* ==================== 17. ADDITIONAL UTILITIES & TABLE STYLES ==================== */
.text-ops-bar button {
    transition: background-color var(--transition-fast), border-color var(--transition-fast);
}
.btn-sm {
    padding: 6px 12px !important;
    font-size: 12px !important;
    border-radius: var(--radius-sm) !important;
}

/* Loan Amortization Table Styles */
.loan-schedule-wrapper {
    animation: fadeIn var(--transition-normal);
}
.table-scroll-container {
    box-shadow: var(--shadow-sm);
}
.loan-schedule-table {
    border-collapse: collapse;
}
.loan-schedule-table th, .loan-schedule-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
}
.loan-schedule-table th {
    font-weight: 700;
    color: var(--text-main);
}
.loan-schedule-table tbody tr {
    transition: background-color var(--transition-fast);
}
.loan-schedule-table tbody tr:nth-child(even) {
    background-color: rgba(0, 0, 0, 0.02);
}
body.dark-mode .loan-schedule-table tbody tr:nth-child(even) {
    background-color: rgba(255, 255, 255, 0.02);
}
.loan-schedule-table tbody tr:hover {
    background-color: var(--clr-primary-light);
}

/* AdSense Container styles */
.adsense-container {
    transition: background-color var(--transition-normal), border-color var(--transition-normal);
}
body.dark-mode .adsense-container {
    background-color: var(--bg-sidebar) !important;
}

/* Hide Adsense in Embed Mode */
body.embed-mode .adsense-container {
    display: none !important;
}

/* 드롭존 내부 자식 요소들의 드래그/클릭 간섭 방지 */
.dropzone * {
    pointer-events: none !important;
}
.pdf-upload-zone * {
    pointer-events: none !important;
}