/* ============================================
   NOTETAKE - Main Stylesheet
   ============================================ */

/* CSS Variables / Design Tokens */
:root {
    --primary: #4F46E5;
    --primary-hover: #4338CA;
    --primary-light: #EEF2FF;
    --accent: #6366F1;
    --danger: #EF4444;
    --danger-hover: #DC2626;
    --success: #10B981;
    --warning: #F59E0B;

    --bg: #F3F4F6;
    --bg-secondary: #FFFFFF;
    --bg-sidebar: #FFFFFF;
    --bg-editor: #FFFFFF;
    --bg-input: #F9FAFB;
    --bg-hover: #F3F4F6;
    --bg-modal-overlay: rgba(0, 0, 0, 0.5);

    --text-primary: #111827;
    --text-secondary: #6B7280;
    --text-muted: #9CA3AF;
    --text-inverse: #FFFFFF;

    --border: #E5E7EB;
    --border-focus: #4F46E5;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 4px 10px -6px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 40px -10px rgba(0, 0, 0, 0.15);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;

    --sidebar-width: 340px;
    --navbar-height: 60px;
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* Dark Theme */
[data-theme="dark"] {
    --bg: #0F172A;
    --bg-secondary: #1E293B;
    --bg-sidebar: #1E293B;
    --bg-editor: #1E293B;
    --bg-input: #334155;
    --bg-hover: #334155;
    --bg-modal-overlay: rgba(0, 0, 0, 0.7);

    --text-primary: #F1F5F9;
    --text-secondary: #CBD5E1;
    --text-muted: #94A3B8;
    --text-inverse: #0F172A;

    --border: #334155;
    --border-focus: #818CF8;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 40px -10px rgba(0, 0, 0, 0.6);

    --primary-light: #1E1B4B;
}

/* Reset & Base */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    transition: background-color var(--transition), color var(--transition);
}

/* ============================================
   NAVIGATION BAR
   ============================================ */
.navbar {
    height: var(--navbar-height);
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
    transition: background-color var(--transition), border-color var(--transition);
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -0.5px;
    cursor: default;
}

.nav-brand i {
    font-size: 1.4rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.9rem;
    transition: all var(--transition);
    white-space: nowrap;
}

.nav-link:hover {
    background-color: var(--bg-hover);
    color: var(--text-primary);
}

.nav-link.active {
    background-color: var(--primary-light);
    color: var(--primary);
    font-weight: 600;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.theme-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}

.theme-btn:hover {
    background-color: var(--bg-hover);
    color: var(--primary);
    border-color: var(--primary);
}

.mobile-menu-btn {
    display: none;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1.2rem;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}

.mobile-menu-btn:hover {
    background-color: var(--bg-hover);
}

/* Mobile Menu */
.mobile-menu {
    display: none;
    flex-direction: column;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 8px 16px;
    gap: 4px;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: var(--navbar-height);
    z-index: 99;
    transition: all var(--transition);
}

.mobile-menu.open {
    display: flex;
}

.mobile-link {
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: all var(--transition);
}

.mobile-link:hover,
.mobile-link.active {
    background-color: var(--primary-light);
    color: var(--primary);
}

/* ============================================
   APP CONTAINER & LAYOUT
   ============================================ */
.app-container {
    display: flex;
    height: calc(100vh - var(--navbar-height));
    overflow: hidden;
    position: relative;
}

/* ============================================
   SIDEBAR
   ============================================ */
.sidebar {
    width: var(--sidebar-width);
    min-width: var(--sidebar-width);
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    transition: all var(--transition);
    z-index: 10;
    position: relative;
}

.sidebar.collapsed {
    margin-left: calc(var(--sidebar-width) * -1);
    min-width: 0;
    width: 0;
    border-right: none;
}

.sidebar-header {
    padding: 20px 20px 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-shrink: 0;
}

.sidebar-header h2 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
    letter-spacing: -0.3px;
}

.sidebar-header h2 i {
    color: var(--primary);
    font-size: 1rem;
}

.btn-new-note {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    border: none;
    background-color: var(--primary);
    color: #FFFFFF;
    font-weight: 600;
    font-size: 0.8rem;
    cursor: pointer;
    white-space: nowrap;
    transition: all var(--transition);
    font-family: var(--font-family);
    letter-spacing: -0.2px;
}

.btn-new-note:hover {
    background-color: var(--primary-hover);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.btn-new-note:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

/* Search */
.search-container {
    padding: 4px 20px 16px;
    position: relative;
    flex-shrink: 0;
}

.search-icon {
    position: absolute;
    left: 34px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 0.85rem;
    pointer-events: none;
    transition: color var(--transition);
}

.search-input {
    width: 100%;
    padding: 10px 14px 10px 36px;
    border-radius: var(--radius-sm);
    border: 1.5px solid var(--border);
    background-color: var(--bg-input);
    font-family: var(--font-family);
    font-size: 0.875rem;
    color: var(--text-primary);
    transition: all var(--transition);
    outline: none;
}

.search-input:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.search-input:focus + .search-icon {
    color: var(--primary);
}

.search-input::placeholder {
    color: var(--text-muted);
}

/* Notes List */
.notes-list {
    flex: 1;
    overflow-y: auto;
    padding: 0 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.notes-list::-webkit-scrollbar {
    width: 5px;
}

.notes-list::-webkit-scrollbar-track {
    background: transparent;
}

.notes-list::-webkit-scrollbar-thumb {
    background-color: var(--border);
    border-radius: 10px;
}

.notes-list::-webkit-scrollbar-thumb:hover {
    background-color: var(--text-muted);
}

/* Individual Note Card in Sidebar */
.note-card {
    padding: 14px 16px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition);
    border: 1.5px solid transparent;
    background-color: transparent;
    position: relative;
    user-select: none;
}

.note-card:hover {
    background-color: var(--bg-hover);
    border-color: var(--border);
}

.note-card.active {
    background-color: var(--primary-light);
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.note-card-title {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-primary);
    margin-bottom: 4px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    letter-spacing: -0.2px;
}

.note-card-preview {
    font-size: 0.78rem;
    color: var(--text-muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    margin-bottom: 6px;
}

.note-card-date {
    font-size: 0.7rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 4px;
}

/* Empty State in Sidebar */
.notes-empty {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
}

.notes-empty i {
    font-size: 2.5rem;
    display: block;
    margin-bottom: 12px;
    opacity: 0.5;
}

.notes-empty p {
    font-size: 0.85rem;
    line-height: 1.4;
}

/* Sidebar Footer */
.sidebar-footer {
    padding: 12px 20px;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.btn-clear-all {
    background: none;
    border: none;
    color: var(--danger);
    cursor: pointer;
    font-size: 0.78rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    font-family: var(--font-family);
}

.btn-clear-all:hover {
    background-color: rgba(239, 68, 68, 0.1);
}

/* Sidebar Toggle Button */
.sidebar-toggle {
    position: absolute;
    left: var(--sidebar-width);
    top: 50%;
    transform: translateY(-50%);
    width: 28px;
    height: 56px;
    border-radius: 0 14px 14px 0;
    border: 1px solid var(--border);
    border-left: none;
    background-color: var(--bg-sidebar);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 11;
    transition: all var(--transition);
    box-shadow: var(--shadow-sm);
}

.sidebar-toggle:hover {
    background-color: var(--bg-hover);
    color: var(--primary);
}

.sidebar.collapsed ~ .sidebar-toggle {
    left: 0;
}

/* ============================================
   MAIN EDITOR AREA
   ============================================ */
.editor-area {
    flex: 1;
    overflow-y: auto;
    background-color: var(--bg-editor);
    display: flex;
    flex-direction: column;
    transition: background-color var(--transition);
}

.editor-area::-webkit-scrollbar {
    width: 7px;
}

.editor-area::-webkit-scrollbar-track {
    background: transparent;
}

.editor-area::-webkit-scrollbar-thumb {
    background-color: var(--border);
    border-radius: 10px;
}

/* Placeholder / Welcome Screen */
.editor-placeholder {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
}

.placeholder-content {
    text-align: center;
    max-width: 420px;
}

.placeholder-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background-color: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    font-size: 2rem;
    color: var(--primary);
}

.placeholder-content h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
    letter-spacing: -0.4px;
}

.placeholder-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
    margin-bottom: 24px;
}

.btn-get-started {
    padding: 12px 24px;
    border-radius: var(--radius-md);
    border: none;
    background-color: var(--primary);
    color: #FFFFFF;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all var(--transition);
    font-family: var(--font-family);
    box-shadow: var(--shadow-md);
}

.btn-get-started:hover {
    background-color: var(--primary-hover);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.btn-get-started:active {
    transform: translateY(0);
}

/* Editor Content */
.editor-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 28px 36px;
    max-width: 900px;
    width: 100%;
    margin: 0 auto;
}

.editor-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.meta-item {
    font-size: 0.78rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 5px;
}

.meta-item i {
    font-size: 0.7rem;
}

.note-title-input {
    width: 100%;
    border: none;
    background: transparent;
    font-family: var(--font-family);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
    padding: 8px 0;
    margin-bottom: 16px;
    outline: none;
    letter-spacing: -0.5px;
    transition: color var(--transition);
}

.note-title-input::placeholder {
    color: var(--text-muted);
    font-weight: 400;
}

.note-content-input {
    flex: 1;
    width: 100%;
    border: none;
    background: transparent;
    font-family: var(--font-family);
    font-size: 1rem;
    color: var(--text-primary);
    padding: 8px 0;
    outline: none;
    resize: none;
    line-height: 1.8;
    min-height: 300px;
    transition: color var(--transition);
}

.note-content-input::placeholder {
    color: var(--text-muted);
}

.editor-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 20px;
    border-top: 1px solid var(--border);
    margin-top: auto;
}

.btn-delete {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    border: 1.5px solid var(--danger);
    background-color: transparent;
    color: var(--danger);
    font-weight: 500;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all var(--transition);
    font-family: var(--font-family);
}

.btn-delete:hover {
    background-color: var(--danger);
    color: #FFFFFF;
}

.save-status {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    color: var(--success);
    font-weight: 500;
}

.save-status.saving {
    color: var(--warning);
}

/* ============================================
   STATIC PAGE STYLES
   ============================================ */
.static-page {
    width: min(1100px, 100%);
    margin: 32px auto;
    padding: 0 24px 32px;
}

.static-page h1 {
    font-size: clamp(2rem, 2.7vw, 2.5rem);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.static-page .subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 28px;
    max-width: 760px;
    line-height: 1.8;
}

.static-page h2 {
    font-size: 1.15rem;
    margin-top: 24px;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.static-page p,
.static-page li {
    color: var(--text-secondary);
    font-size: 0.96rem;
    line-height: 1.8;
}

.static-page ul {
    list-style: disc inside;
    margin: 12px 0 0 0;
    padding-left: 1rem;
}

.static-page a {
    color: var(--primary);
    text-decoration: none;
}

.static-page a:hover {
    text-decoration: underline;
}

.contact-page .contact-hero {
    display: grid;
    gap: 24px;
    grid-template-columns: minmax(0, 1fr);
    margin-bottom: 32px;
}

.contact-page .contact-hero p {
    max-width: 760px;
}

.contact-page .contact-grid {
    display: grid;
    gap: 24px;
    grid-template-columns: 1.2fr 0.8fr;
}

.contact-page .contact-panel,
.contact-page .contact-form-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 28px;
}

.contact-page .contact-panel h3,
.contact-page .contact-form-card h3 {
    margin-bottom: 18px;
    font-size: 1.15rem;
}

.contact-page .contact-list {
    display: grid;
    gap: 14px;
}

.contact-card {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 16px;
    background: var(--bg-input);
    border-radius: var(--radius-md);
}

.contact-card i {
    font-size: 1.2rem;
    color: var(--primary);
    margin-top: 4px;
}

.contact-card .contact-card-body {
    display: grid;
    gap: 4px;
}

.contact-card strong {
    color: var(--text-primary);
}

.contact-page .social-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 20px;
}

.social-link {
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    background-color: var(--bg-input);
    color: var(--text-primary);
    border: 1px solid var(--border);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    transition: background-color var(--transition), border-color var(--transition);
}

.social-link:hover {
    background-color: var(--primary-light);
    border-color: var(--primary);
    color: var(--primary);
}

.form-group {
    display: grid;
    gap: 10px;
    margin-bottom: 18px;
}

.form-group label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.92rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-md);
    padding: 14px 16px;
    background-color: var(--bg-input);
    color: var(--text-primary);
    font-family: var(--font-family);
    font-size: 0.95rem;
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1);
}

.form-group textarea {
    min-height: 170px;
    resize: vertical;
}

.btn-submit {
    width: fit-content;
    padding: 14px 26px;
    border-radius: var(--radius-md);
    border: none;
    background-color: var(--primary);
    color: #ffffff;
    font-weight: 600;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: background-color var(--transition), transform var(--transition);
}

.btn-submit:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
}

.form-success {
    margin-top: 16px;
    display: none;
    padding: 16px 18px;
    border-radius: var(--radius-md);
    background-color: rgba(16, 185, 129, 0.12);
    color: var(--success);
}

.form-success.show {
    display: block;
}

.site-footer {
    padding: 20px 24px;
    margin-top: 32px;
    border-top: 1px solid var(--border);
    background-color: var(--bg-secondary);
}

.footer-content {
    max-width: min(1100px, 100%);
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 12px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

@media (max-width: 900px) {
    .contact-page .contact-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 680px) {
    .static-page {
        padding: 0 18px 24px;
    }

    .footer-content {
        flex-direction: column;
    }
}

/* ============================================
   TOAST NOTIFICATION
   ============================================ */
.toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background-color: #1F2937;
    color: #FFFFFF;
    padding: 14px 22px;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    box-shadow: var(--shadow-xl);
    z-index: 1000;
    transform: translateY(120px);
    opacity: 0;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

.toast i {
    color: var(--success);
}

[data-theme="dark"] .toast {
    background-color: #F1F5F9;
    color: #1F2937;
}

/* ============================================
   MODAL
   ============================================ */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg-modal-overlay);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition);
}

.modal-overlay.open {
    opacity: 1;
    pointer-events: all;
}

.modal-dialog {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 32px;
    max-width: 420px;
    width: 90%;
    text-align: center;
    box-shadow: var(--shadow-xl);
    transition: background-color var(--transition);
}

.modal-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background-color: rgba(239, 68, 68, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    font-size: 1.6rem;
    color: var(--danger);
}

.modal-dialog h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.modal-dialog p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.5;
}

.modal-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
}

.btn-cancel {
    padding: 10px 22px;
    border-radius: var(--radius-sm);
    border: 1.5px solid var(--border);
    background-color: transparent;
    color: var(--text-primary);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    font-family: var(--font-family);
}

.btn-cancel:hover {
    background-color: var(--bg-hover);
}

.btn-confirm-delete {
    padding: 10px 22px;
    border-radius: var(--radius-sm);
    border: none;
    background-color: var(--danger);
    color: #FFFFFF;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    font-family: var(--font-family);
}

.btn-confirm-delete:hover {
    background-color: var(--danger-hover);
}

/* ============================================
   STATIC PAGES (Contact, Privacy, Terms)
   ============================================ */
.static-page {
    max-width: 780px;
    margin: 0 auto;
    padding: 40px 24px 60px;
}

.static-page h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: -0.5px;
    color: var(--text-primary);
}

.static-page .subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 32px;
    line-height: 1.5;
}

.static-page h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-top: 28px;
    margin-bottom: 10px;
    color: var(--text-primary);
    letter-spacing: -0.3px;
}

.static-page p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 14px;
    font-size: 0.95rem;
}

.static-page ul {
    list-style: disc;
    padding-left: 24px;
    margin-bottom: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.static-page ul li {
    margin-bottom: 6px;
    font-size: 0.95rem;
}

.static-page .last-updated {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 32px;
    font-style: italic;
}

/* Contact Form */
.contact-form {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border);
    margin-top: 8px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 6px;
    color: var(--text-primary);
    letter-spacing: -0.2px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 11px 14px;
    border-radius: var(--radius-sm);
    border: 1.5px solid var(--border);
    background-color: var(--bg-input);
    font-family: var(--font-family);
    font-size: 0.9rem;
    color: var(--text-primary);
    transition: all var(--transition);
    outline: none;
    resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.form-group textarea {
    min-height: 140px;
}

.btn-submit {
    padding: 12px 28px;
    border-radius: var(--radius-sm);
    border: none;
    background-color: var(--primary);
    color: #FFFFFF;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all var(--transition);
    font-family: var(--font-family);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    box-shadow: var(--shadow-md);
}

.btn-submit:hover {
    background-color: var(--primary-hover);
    box-shadow: var(--shadow-lg);
    transform: translateY(-1px);
}

.form-success {
    display: none;
    text-align: center;
    padding: 20px;
    color: var(--success);
    font-weight: 600;
}

.form-success.show {
    display: block;
}

.form-success i {
    font-size: 3rem;
    display: block;
    margin-bottom: 12px;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 768px) {
    .navbar {
        padding: 0 16px;
    }

    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .sidebar {
        position: fixed;
        left: 0;
        top: var(--navbar-height);
        height: calc(100vh - var(--navbar-height));
        z-index: 50;
        box-shadow: var(--shadow-xl);
    }

    .sidebar.collapsed {
        margin-left: calc(var(--sidebar-width) * -1);
    }

    .sidebar-toggle {
        left: var(--sidebar-width);
    }

    .sidebar.collapsed ~ .sidebar-toggle {
        left: 0;
    }

    .editor-content {
        padding: 20px 16px;
    }

    .note-title-input {
        font-size: 1.4rem;
    }

    .editor-meta {
        gap: 10px;
        flex-wrap: wrap;
    }

    .static-page {
        padding: 24px 16px 40px;
    }

    .static-page h1 {
        font-size: 1.5rem;
    }

    .contact-form {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    :root {
        --sidebar-width: 280px;
    }

    .sidebar-header {
        padding: 14px 14px 10px;
    }

    .btn-new-note {
        padding: 7px 10px;
        font-size: 0.75rem;
    }

    .search-container {
        padding: 4px 14px 12px;
    }

    .notes-list {
        padding: 0 8px;
    }

    .note-card {
        padding: 10px 12px;
    }

    .editor-content {
        padding: 16px 12px;
    }

    .note-title-input {
        font-size: 1.2rem;
    }

    .editor-actions {
        flex-direction: column;
        gap: 12px;
        align-items: stretch;
    }

    .toast {
        right: 16px;
        bottom: 20px;
        left: 16px;
        text-align: center;
        justify-content: center;
    }
}