/* ============================================================
   Short — 3D Liquid Glass Design System
   Premium URL Shortener with Light/Dark Mode
   ============================================================ */

/* ---------- Fonts ---------- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500;600;700&display=swap');

/* ---------- Dark Theme (Default) ---------- */
:root {
    /* Liquid glass palette */
    --glass-bg: rgba(255, 255, 255, 0.06);
    --glass-bg-hover: rgba(255, 255, 255, 0.10);
    --glass-bg-solid: rgba(15, 15, 30, 0.85);
    --glass-border: rgba(255, 255, 255, 0.12);
    --glass-border-bright: rgba(255, 255, 255, 0.22);
    --glass-shadow: rgba(0, 0, 0, 0.35);
    --glass-inner-glow: rgba(255, 255, 255, 0.05);
    --glass-blur: 24px;
    --glass-blur-heavy: 40px;

    /* Accent colors */
    --accent: #00e5ff;
    --accent-glow: rgba(0, 229, 255, 0.4);
    --accent-secondary: #b388ff;
    --accent-secondary-glow: rgba(179, 136, 255, 0.35);
    --accent-green: #69f0ae;
    --accent-green-glow: rgba(105, 240, 174, 0.35);
    --accent-orange: #ffab40;
    --accent-orange-glow: rgba(255, 171, 64, 0.35);
    --accent-red: #ff5252;
    --accent-red-glow: rgba(255, 82, 82, 0.3);
    --accent-pink: #ff4081;

    /* Text */
    --text-primary: rgba(255, 255, 255, 0.95);
    --text-secondary: rgba(255, 255, 255, 0.60);
    --text-muted: rgba(255, 255, 255, 0.35);
    --text-inverse: #050510;

    /* Background */
    --bg-body: #050510;
    --bg-surface: rgba(255, 255, 255, 0.03);
    --bg-input: rgba(255, 255, 255, 0.05);
    --bg-input-focus: rgba(255, 255, 255, 0.08);

    /* Borders */
    --border-color: rgba(255, 255, 255, 0.08);
    --border-focus: var(--accent);

    /* Misc */
    --radius-xs: 8px;
    --radius-sm: 12px;
    --radius-md: 20px;
    --radius-lg: 28px;
    --radius-xl: 36px;
    --radius-full: 50%;

    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-spring: 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);

    /* Sidebar */
    --sidebar-width: 260px;
    --sidebar-collapsed: 72px;
}

/* ---------- Light Theme ---------- */
[data-theme="light"] {
    --glass-bg: rgba(255, 255, 255, 0.55);
    --glass-bg-hover: rgba(255, 255, 255, 0.70);
    --glass-bg-solid: rgba(245, 245, 255, 0.90);
    --glass-border: rgba(0, 0, 0, 0.08);
    --glass-border-bright: rgba(0, 0, 0, 0.14);
    --glass-shadow: rgba(0, 0, 0, 0.08);
    --glass-inner-glow: rgba(255, 255, 255, 0.8);
    --glass-blur: 20px;

    --accent: #0091ea;
    --accent-glow: rgba(0, 145, 234, 0.25);
    --accent-secondary: #7c4dff;
    --accent-secondary-glow: rgba(124, 77, 255, 0.2);
    --accent-green: #00c853;
    --accent-green-glow: rgba(0, 200, 83, 0.2);
    --accent-orange: #ff9100;
    --accent-orange-glow: rgba(255, 145, 0, 0.2);
    --accent-red: #d50000;
    --accent-red-glow: rgba(213, 0, 0, 0.2);

    --text-primary: rgba(0, 0, 0, 0.87);
    --text-secondary: rgba(0, 0, 0, 0.54);
    --text-muted: rgba(0, 0, 0, 0.32);
    --text-inverse: #ffffff;

    --bg-body: #f0f2f8;
    --bg-surface: rgba(255, 255, 255, 0.6);
    --bg-input: rgba(0, 0, 0, 0.04);
    --bg-input-focus: rgba(0, 0, 0, 0.06);

    --border-color: rgba(0, 0, 0, 0.06);
    --border-focus: var(--accent);
}

[data-theme="light"] body {
    background: var(--bg-body);
    background-image:
        radial-gradient(ellipse 80% 60% at 20% 0%, rgba(0, 145, 234, 0.08) 0%, transparent 60%),
        radial-gradient(ellipse 60% 50% at 80% 100%, rgba(124, 77, 255, 0.06) 0%, transparent 60%);
}

[data-theme="light"] .bg-orb { opacity: 0.25; }

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    background: var(--bg-body);
    background-image:
        radial-gradient(ellipse 80% 60% at 20% 0%, rgba(0, 100, 180, 0.18) 0%, transparent 60%),
        radial-gradient(ellipse 60% 50% at 80% 100%, rgba(120, 40, 200, 0.15) 0%, transparent 60%),
        radial-gradient(ellipse 50% 40% at 50% 50%, rgba(0, 229, 255, 0.04) 0%, transparent 50%);
    transition: background var(--transition-smooth), color var(--transition-smooth);
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- Animated Background Orbs ---------- */
.bg-orbs {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

.bg-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    animation: orbFloat 20s ease-in-out infinite;
    opacity: 0.5;
}

.bg-orb:nth-child(1) {
    width: 500px; height: 500px;
    background: radial-gradient(circle, rgba(0, 229, 255, 0.15), transparent 70%);
    top: -10%; left: -5%;
    animation-duration: 25s;
}

.bg-orb:nth-child(2) {
    width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(120, 40, 200, 0.12), transparent 70%);
    bottom: -15%; right: -10%;
    animation-duration: 30s;
    animation-delay: -5s;
}

.bg-orb:nth-child(3) {
    width: 350px; height: 350px;
    background: radial-gradient(circle, rgba(105, 240, 174, 0.10), transparent 70%);
    top: 50%; left: 60%;
    animation-duration: 22s;
    animation-delay: -10s;
}

.bg-orb:nth-child(4) {
    width: 280px; height: 280px;
    background: radial-gradient(circle, rgba(255, 171, 64, 0.08), transparent 70%);
    top: 20%; right: 20%;
    animation-duration: 18s;
    animation-delay: -7s;
}

@keyframes orbFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(40px, -30px) scale(1.05); }
    50% { transform: translate(-20px, 50px) scale(0.95); }
    75% { transform: translate(30px, 20px) scale(1.02); }
}

/* ---------- Liquid Glass Classes ---------- */
.liquid-glass {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur)) saturate(1.4);
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(1.4);
    border: 1px solid var(--glass-border);
    box-shadow:
        0 8px 32px var(--glass-shadow),
        inset 0 1px 0 var(--glass-inner-glow),
        inset 0 -1px 0 rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
}

.liquid-glass::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(255, 255, 255, 0.08) 0%,
        transparent 40%,
        transparent 60%,
        rgba(255, 255, 255, 0.03) 100%
    );
    pointer-events: none;
    z-index: 1;
}

.liquid-glass-refract {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur-heavy)) saturate(1.6);
    -webkit-backdrop-filter: blur(var(--glass-blur-heavy)) saturate(1.6);
    border: 1px solid var(--glass-border-bright);
    box-shadow:
        0 12px 48px var(--glass-shadow),
        0 4px 16px rgba(0, 229, 255, 0.05),
        inset 0 1px 0 rgba(255, 255, 255, 0.1),
        inset 0 -1px 0 rgba(0, 0, 0, 0.15);
    position: relative;
    overflow: hidden;
}

.liquid-glass-refract::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: conic-gradient(
        from 0deg,
        transparent 0%,
        rgba(255, 255, 255, 0.03) 10%,
        transparent 20%,
        rgba(0, 229, 255, 0.02) 30%,
        transparent 40%,
        rgba(179, 136, 255, 0.02) 50%,
        transparent 60%
    );
    animation: liquidRefract 15s linear infinite;
    pointer-events: none;
    z-index: 1;
}

@keyframes liquidRefract {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ---------- 3D Scene ---------- */
.scene-3d {
    perspective: 1200px;
    perspective-origin: 50% 40%;
}

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover { background: rgba(255, 255, 255, 0.25); }

[data-theme="light"] ::-webkit-scrollbar-thumb { background: rgba(0, 0, 0, 0.15); }
[data-theme="light"] ::-webkit-scrollbar-thumb:hover { background: rgba(0, 0, 0, 0.25); }

/* ---------- Typography ---------- */
.gradient-text {
    background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.mono { font-family: 'JetBrains Mono', monospace; }

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

/* ---------- Navbar ---------- */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 32px;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    transition: transform var(--transition-smooth);
}

.navbar .logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.navbar .logo-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-xs);
    background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 800;
    color: #fff;
    box-shadow: 0 4px 20px var(--accent-glow);
    transition: transform var(--transition-spring);
}

.navbar .logo:hover .logo-icon {
    transform: rotateY(180deg) scale(1.1);
}

.navbar .logo-text {
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.navbar .nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
}

.navbar .nav-links a {
    padding: 8px 16px;
    border-radius: var(--radius-xs);
    color: var(--text-secondary);
    font-size: 0.88rem;
    font-weight: 500;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.navbar .nav-links a:hover {
    color: var(--text-primary);
    background: var(--glass-bg-hover);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Theme Toggle Button */
.theme-toggle {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-xs);
    border: 1px solid var(--glass-border);
    background: var(--glass-bg);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    background: var(--glass-bg-hover);
    color: var(--accent);
    transform: rotate(20deg);
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 24px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--glass-border);
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn:hover {
    background: var(--glass-bg-hover);
    border-color: var(--glass-border-bright);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px var(--glass-shadow);
    text-decoration: none;
}

.btn:active { transform: translateY(0) scale(0.98); }

.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
    border: none;
    color: #fff;
    box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
    box-shadow: 0 8px 30px var(--accent-glow);
    transform: translateY(-2px) scale(1.02);
}

.btn-danger {
    border-color: var(--accent-red);
    color: var(--accent-red);
}

.btn-danger:hover {
    background: rgba(255, 82, 82, 0.15);
    border-color: var(--accent-red);
}

.btn-success {
    border-color: var(--accent-green);
    color: var(--accent-green);
}

.btn-success:hover {
    background: rgba(105, 240, 174, 0.15);
}

.btn-sm { padding: 6px 14px; font-size: 0.8rem; }
.btn-lg { padding: 14px 32px; font-size: 1rem; }
.btn-icon { width: 36px; height: 36px; padding: 0; }

/* ---------- Inputs ---------- */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--glass-border);
    background: var(--bg-input);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    font-size: 0.9rem;
    transition: all var(--transition-fast);
    outline: none;
}

.form-input:focus {
    border-color: var(--accent);
    background: var(--bg-input-focus);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

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

select.form-input {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23888' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

textarea.form-input {
    resize: vertical;
    min-height: 80px;
}

/* ---------- Cards ---------- */
.card {
    border-radius: var(--radius-md);
    padding: 24px;
    transition: all var(--transition-smooth);
    transform-style: preserve-3d;
    transform: translateZ(0);
}

.card > * { position: relative; z-index: 2; }

.card:hover {
    transform: translateY(-4px) translateZ(10px);
    border-color: var(--glass-border-bright);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.card-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* ---------- KPI Cards ---------- */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.kpi-card {
    border-radius: var(--radius-md);
    padding: 20px;
    transition: all var(--transition-smooth);
    transform-style: preserve-3d;
}

.kpi-card:hover {
    transform: translateY(-4px) translateZ(8px);
}

.kpi-card .kpi-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    margin-bottom: 12px;
    transition: transform var(--transition-spring);
}

.kpi-card:hover .kpi-icon {
    transform: scale(1.1) rotateZ(-5deg);
}

.kpi-card .kpi-value {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.8rem;
    font-weight: 700;
    line-height: 1;
    margin-bottom: 4px;
}

.kpi-card .kpi-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
}

.kpi-cyan .kpi-icon {
    background: linear-gradient(135deg, rgba(0, 229, 255, 0.15), rgba(0, 229, 255, 0.05));
    color: var(--accent);
    box-shadow: 0 4px 16px rgba(0, 229, 255, 0.1);
}

.kpi-purple .kpi-icon {
    background: linear-gradient(135deg, rgba(179, 136, 255, 0.15), rgba(179, 136, 255, 0.05));
    color: var(--accent-secondary);
    box-shadow: 0 4px 16px rgba(179, 136, 255, 0.1);
}

.kpi-green .kpi-icon {
    background: linear-gradient(135deg, rgba(105, 240, 174, 0.15), rgba(105, 240, 174, 0.05));
    color: var(--accent-green);
    box-shadow: 0 4px 16px rgba(105, 240, 174, 0.1);
}

.kpi-orange .kpi-icon {
    background: linear-gradient(135deg, rgba(255, 171, 64, 0.15), rgba(255, 171, 64, 0.05));
    color: var(--accent-orange);
    box-shadow: 0 4px 16px rgba(255, 171, 64, 0.1);
}

/* ---------- Tables ---------- */
.table-container {
    width: 100%;
    overflow-x: auto;
    border-radius: var(--radius-md);
}

table {
    width: 100%;
    border-collapse: collapse;
}

table th {
    padding: 12px 16px;
    text-align: left;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-color);
}

table td {
    padding: 12px 16px;
    font-size: 0.88rem;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

table tr:hover td {
    background: var(--glass-bg-hover);
    color: var(--text-primary);
}

table tr:last-child td { border-bottom: none; }

/* ---------- Badges / Tags ---------- */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    border-radius: 50px;
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.badge-cyan {
    background: rgba(0, 229, 255, 0.12);
    color: var(--accent);
    border: 1px solid rgba(0, 229, 255, 0.2);
}

.badge-green {
    background: rgba(105, 240, 174, 0.12);
    color: var(--accent-green);
    border: 1px solid rgba(105, 240, 174, 0.2);
}

.badge-orange {
    background: rgba(255, 171, 64, 0.12);
    color: var(--accent-orange);
    border: 1px solid rgba(255, 171, 64, 0.2);
}

.badge-red {
    background: rgba(255, 82, 82, 0.12);
    color: var(--accent-red);
    border: 1px solid rgba(255, 82, 82, 0.2);
}

.badge-purple {
    background: rgba(179, 136, 255, 0.12);
    color: var(--accent-secondary);
    border: 1px solid rgba(179, 136, 255, 0.2);
}

.badge-pink {
    background: rgba(255, 64, 129, 0.12);
    color: var(--accent-pink);
    border: 1px solid rgba(255, 64, 129, 0.2);
}

/* ---------- Toast ---------- */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    padding: 14px 24px;
    border-radius: var(--radius-sm);
    background: var(--glass-bg-solid);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    box-shadow: 0 8px 32px var(--glass-shadow);
    color: var(--text-primary);
    font-size: 0.88rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 10px;
    animation: slideInRight 0.3s ease-out;
    min-width: 280px;
}

.toast.success { border-left: 3px solid var(--accent-green); }
.toast.error { border-left: 3px solid var(--accent-red); }
.toast.info { border-left: 3px solid var(--accent); }

@keyframes slideInRight {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* ---------- Modal ---------- */
.modal-backdrop {
    position: fixed;
    inset: 0;
    z-index: 5000;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(8px);
    display: none;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.2s ease;
}

.modal-backdrop.active { display: flex; }

.modal {
    width: 90%;
    max-width: 560px;
    max-height: 90vh;
    overflow-y: auto;
    border-radius: var(--radius-lg);
    padding: 32px;
    animation: modalSlideUp 0.3s ease-out;
}

.modal > * { position: relative; z-index: 2; }

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.modal-title {
    font-size: 1.2rem;
    font-weight: 700;
}

.modal-close {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-xs);
    border: 1px solid var(--glass-border);
    background: var(--glass-bg);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: rgba(255, 82, 82, 0.15);
    border-color: var(--accent-red);
    color: var(--accent-red);
}

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes modalSlideUp {
    from { transform: translateY(20px) scale(0.95); opacity: 0; }
    to { transform: translateY(0) scale(1); opacity: 1; }
}

/* ---------- Hero Section ---------- */
.hero {
    text-align: center;
    padding: 80px 20px 60px;
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: clamp(2.2rem, 5vw, 4rem);
    font-weight: 900;
    margin-bottom: 16px;
    line-height: 1.1;
}

.hero .subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 40px;
    line-height: 1.6;
}

/* Hero URL Input */
.hero-input-wrap {
    max-width: 700px;
    margin: 0 auto;
    display: flex;
    gap: 0;
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-smooth);
    transform-style: preserve-3d;
    transform: translateZ(0);
}

.hero-input-wrap:focus-within {
    transform: translateZ(10px) scale(1.02);
    box-shadow: 0 12px 48px var(--glass-shadow), 0 0 40px var(--accent-glow);
}

.hero-input-wrap input {
    flex: 1;
    padding: 18px 24px;
    border: none;
    background: transparent;
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    font-size: 1.05rem;
    outline: none;
}

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

.hero-input-wrap button {
    padding: 18px 36px;
    border: none;
    background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
    color: #fff;
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.hero-input-wrap button:hover {
    filter: brightness(1.1);
    box-shadow: 0 4px 20px var(--accent-glow);
}

/* Hero result */
.hero-result {
    max-width: 700px;
    margin: 20px auto 0;
    padding: 16px 24px;
    border-radius: var(--radius-md);
    display: none;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    animation: slideInRight 0.3s ease-out;
}

.hero-result.show { display: flex; }

.hero-result .short-url {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--accent);
}

/* ---------- Features Grid ---------- */
.features-section {
    padding: 80px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.features-section h2 {
    text-align: center;
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    margin-bottom: 48px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.feature-card {
    border-radius: var(--radius-md);
    padding: 32px 24px;
    transition: all var(--transition-smooth);
    transform-style: preserve-3d;
    transform: translateZ(0);
}

.feature-card:hover {
    transform: translateY(-8px) translateZ(15px);
    border-color: var(--glass-border-bright);
}

.feature-card .feature-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 16px;
    transition: transform var(--transition-spring);
}

.feature-card:hover .feature-icon {
    transform: scale(1.15) rotateZ(-8deg);
}

.feature-card h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.feature-card p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ---------- Pricing Section ---------- */
.pricing-section {
    padding: 80px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.pricing-section h2 {
    text-align: center;
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    margin-bottom: 12px;
}

.pricing-section .subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 48px;
}

.pricing-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 40px;
}

.pricing-toggle span { font-size: 0.88rem; color: var(--text-secondary); }
.pricing-toggle span.active { color: var(--text-primary); font-weight: 600; }

.toggle-switch {
    width: 52px;
    height: 28px;
    border-radius: 14px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    cursor: pointer;
    position: relative;
    transition: all var(--transition-fast);
}

.toggle-switch::after {
    content: '';
    position: absolute;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--accent);
    top: 2px;
    left: 2px;
    transition: transform var(--transition-fast);
    box-shadow: 0 2px 8px var(--accent-glow);
}

.toggle-switch.active::after { transform: translateX(24px); }

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
    align-items: start;
}

.pricing-card {
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    text-align: center;
    transition: all var(--transition-smooth);
    transform-style: preserve-3d;
    transform: translateZ(0);
    position: relative;
}

.pricing-card:hover {
    transform: translateY(-8px) translateZ(15px);
}

.pricing-card.popular {
    border-color: var(--accent);
    box-shadow: 0 0 40px var(--accent-glow), 0 12px 48px var(--glass-shadow);
}

.pricing-card .popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 4px 16px;
    border-radius: 50px;
    background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
    color: #fff;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    z-index: 5;
}

.pricing-card .plan-name {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.pricing-card .plan-price {
    font-family: 'JetBrains Mono', monospace;
    font-size: 2.5rem;
    font-weight: 800;
    margin: 16px 0 4px;
}

.pricing-card .plan-price .currency { font-size: 1.2rem; }
.pricing-card .plan-price .period {
    font-size: 0.85rem;
    font-weight: 400;
    color: var(--text-muted);
}

.pricing-card .plan-features {
    list-style: none;
    text-align: left;
    margin: 24px 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.pricing-card .plan-features li {
    font-size: 0.85rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.pricing-card .plan-features li .check {
    color: var(--accent-green);
    font-weight: 700;
}

.pricing-card .plan-features li .cross {
    color: var(--text-muted);
}

/* ---------- Dashboard Layout ---------- */
.dashboard-layout {
    display: flex;
    min-height: 100vh;
    position: relative;
    z-index: 1;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    min-height: 100vh;
    padding: 20px 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 50;
    transition: width var(--transition-smooth);
    border-right: 1px solid var(--glass-border);
    background: var(--glass-bg-solid);
    backdrop-filter: blur(var(--glass-blur-heavy));
}

.sidebar .sidebar-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    margin-bottom: 20px;
    text-decoration: none;
}

.sidebar .sidebar-logo .logo-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-xs);
    background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 800;
    color: #fff;
    flex-shrink: 0;
}

.sidebar .sidebar-logo span {
    font-size: 1.1rem;
    font-weight: 800;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 2px;
    flex: 1;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    border-radius: var(--radius-xs);
    color: var(--text-secondary);
    font-size: 0.88rem;
    font-weight: 500;
    text-decoration: none;
    transition: all var(--transition-fast);
}

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

.sidebar-nav a.active {
    background: linear-gradient(135deg, rgba(0, 229, 255, 0.1), rgba(179, 136, 255, 0.1));
    color: var(--accent);
    border: 1px solid rgba(0, 229, 255, 0.15);
}

.sidebar-nav a svg, .sidebar-nav a .nav-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.sidebar-footer {
    padding: 12px;
    border-top: 1px solid var(--border-color);
    margin-top: auto;
}

.sidebar-user {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px;
    border-radius: var(--radius-xs);
    text-decoration: none;
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.sidebar-user:hover { background: var(--glass-bg-hover); }

.sidebar-user .avatar {
    width: 34px;
    height: 34px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}

.sidebar-user .user-info { flex: 1; min-width: 0; }
.sidebar-user .user-name {
    font-size: 0.82rem;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.sidebar-user .user-plan {
    font-size: 0.68rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent);
    font-weight: 600;
}

/* Dashboard content area */
.dashboard-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 24px 32px;
    min-height: 100vh;
}

.dashboard-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}

.dashboard-topbar h1 {
    font-size: 1.6rem;
}

.topbar-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Dashboard Tabs */
.tab-content { display: none; }
.tab-content.active { display: block; }

/* ---------- Link Item ---------- */
.link-item {
    padding: 16px 20px;
    border-radius: var(--radius-sm);
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 16px;
    transition: all var(--transition-fast);
}

.link-item:hover {
    border-color: var(--glass-border-bright);
    background: var(--glass-bg-hover);
}

.link-item .link-info { flex: 1; min-width: 0; }

.link-item .short-url {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--accent);
    display: flex;
    align-items: center;
    gap: 8px;
}

.link-item .original-url {
    font-size: 0.8rem;
    color: var(--text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 400px;
    margin-top: 4px;
}

.link-item .link-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 6px;
}

.link-item .link-actions {
    display: flex;
    align-items: center;
    gap: 6px;
}

.link-item .click-count {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    text-align: center;
    min-width: 60px;
}

.link-item .click-count small {
    display: block;
    font-size: 0.65rem;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

/* ---------- Chart Container ---------- */
.chart-container {
    border-radius: var(--radius-md);
    padding: 24px;
    position: relative;
}

.chart-container canvas {
    position: relative;
    z-index: 2;
}

/* ---------- Auth Pages ---------- */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    position: relative;
    z-index: 1;
}

.auth-card {
    width: 100%;
    max-width: 440px;
    border-radius: var(--radius-xl);
    padding: 40px 36px;
    transform-style: preserve-3d;
    transform: translateZ(0);
}

.auth-card > * { position: relative; z-index: 2; }

.auth-card .auth-logo {
    text-align: center;
    margin-bottom: 28px;
}

.auth-card .auth-logo .logo-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 900;
    color: #fff;
    margin-bottom: 12px;
    box-shadow: 0 4px 20px var(--accent-glow);
}

.auth-card h1 {
    font-size: 1.5rem;
    text-align: center;
    margin-bottom: 4px;
}

.auth-card .auth-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.88rem;
    margin-bottom: 28px;
}

.auth-card .form-group { margin-bottom: 16px; }

.auth-card .auth-footer {
    text-align: center;
    margin-top: 20px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.auth-error {
    padding: 10px 16px;
    border-radius: var(--radius-xs);
    background: rgba(255, 82, 82, 0.1);
    border: 1px solid rgba(255, 82, 82, 0.2);
    color: var(--accent-red);
    font-size: 0.85rem;
    margin-bottom: 16px;
}

/* ---------- Pagination ---------- */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    margin-top: 20px;
}

.pagination button, .pagination a {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-xs);
    border: 1px solid var(--glass-border);
    background: var(--glass-bg);
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.pagination button:hover, .pagination a:hover {
    background: var(--glass-bg-hover);
    color: var(--text-primary);
}

.pagination button.active, .pagination a.active {
    background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
    color: #fff;
    border: none;
}

/* ---------- Empty State ---------- */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.empty-state .empty-icon {
    font-size: 3rem;
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-state h3 { margin-bottom: 8px; color: var(--text-secondary); }
.empty-state p { font-size: 0.88rem; }

/* ---------- Footer ---------- */
.footer {
    padding: 32px;
    text-align: center;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    margin-top: 60px;
}

.footer > * { position: relative; z-index: 2; }

.footer-links {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    margin-bottom: 16px;
}

.footer-links a {
    color: var(--text-muted);
    font-size: 0.85rem;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-links a:hover { color: var(--accent); }

.footer-copy {
    font-size: 0.78rem;
    color: var(--text-muted);
}

/* ---------- Mobile Hamburger ---------- */
.mobile-menu-btn {
    display: none;
    width: 40px;
    height: 40px;
    border: none;
    background: var(--glass-bg);
    border-radius: var(--radius-xs);
    color: var(--text-primary);
    cursor: pointer;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

/* ---------- Link Expired / Password Pages ---------- */
.status-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    position: relative;
    z-index: 1;
    text-align: center;
}

.status-card {
    max-width: 440px;
    width: 100%;
    border-radius: var(--radius-xl);
    padding: 48px 36px;
}

.status-card > * { position: relative; z-index: 2; }

.status-card .status-icon {
    font-size: 3rem;
    margin-bottom: 16px;
}

/* ---------- Utility ---------- */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.gap-24 { gap: 24px; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.w-full { width: 100%; }
.hidden { display: none !important; }
.truncate { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.cursor-pointer { cursor: pointer; }

/* ---------- Animations ---------- */
@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

.skeleton {
    background: linear-gradient(90deg, var(--bg-surface) 25%, var(--glass-bg-hover) 50%, var(--bg-surface) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-xs);
}

@keyframes countUp {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-in {
    animation: countUp 0.5s ease-out forwards;
}

@keyframes pulse-glow {
    0%, 100% { box-shadow: 0 0 20px var(--accent-glow); }
    50% { box-shadow: 0 0 40px var(--accent-glow); }
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
        z-index: 200;
    }
    .sidebar.open { transform: translateX(0); }
    .dashboard-content { margin-left: 0; }
    .mobile-menu-btn { display: flex; }
}

@media (max-width: 768px) {
    .hero h1 { font-size: 2rem; }
    .hero-input-wrap { flex-direction: column; border-radius: var(--radius-md); }
    .hero-input-wrap button { border-radius: 0 0 var(--radius-md) var(--radius-md); }
    .hero-result { flex-direction: column; text-align: center; }
    .features-grid { grid-template-columns: 1fr; }
    .pricing-grid { grid-template-columns: 1fr; }
    .kpi-grid { grid-template-columns: repeat(2, 1fr); }
    .navbar { padding: 12px 16px; }
    .navbar .nav-links { display: none; }
    .dashboard-content { padding: 16px; }
    .link-item { flex-direction: column; align-items: flex-start; }
    .link-item .click-count { text-align: left; }
}

@media (max-width: 480px) {
    .kpi-grid { grid-template-columns: 1fr; }
    .auth-card { padding: 28px 20px; }
    .hero { padding: 40px 16px 32px; }
}