/* 
   -----------------------------------------------------------------------------
   ZENITH FLOW - PREMIUM 3D / MODERN DARK UI
   ----------------------------------------------------------------------------- 
   A polished, professional aesthetic focusing on depth, clarity, and motion.
*/

:root {
    --bg-core: #f8fafc;
    /* Light / White Background */
    --bg-gradient-start: #e0f2fe;
    --bg-gradient-end: #f1f5f9;

    --primary: #2563eb;
    /* Solid Royal Blue for high contrast */
    --primary-glow: rgba(37, 99, 235, 0.15);

    --secondary: #7c3aed;
    /* Violet */
    --accent: #059669;
    /* Emerald */
    --danger: #dc2626;
    /* Red */

    --glass-surface: rgba(255, 255, 255, 0.75);
    /* White Glass */
    --glass-border: rgba(0, 0, 0, 0.1);
    /* Darker border for visibility */
    --glass-highlight: rgba(255, 255, 255, 0.9);

    --text-main: #000000;
    /* PURE BLACK TEXT as requested */
    --text-muted: #475569;
    /* Dark Grey for secondary text */

    --card-radius: 16px;
    --btn-radius: 50px;

    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.05);
    --shadow-glow: 0 0 15px var(--primary-glow);
}

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-core);
    background-image:
        radial-gradient(circle at 15% 50%, rgba(59, 130, 246, 0.15), transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(139, 92, 246, 0.15), transparent 25%);
    color: var(--text-main);
    font-family: 'Montserrat', sans-serif;
    /* Clean, modern sans */
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
}

/* 
   -----------------
   ANIMATIONS 
   -----------------
*/
@keyframes float {
    0% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-10px);
    }

    100% {
        transform: translateY(0px);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.8s ease-out forwards;
}

.float-anim {
    animation: float 6s ease-in-out infinite;
}

/* 
   -----------------
   COMPONENTS
   -----------------
*/

/* Glass Card */
.glass-panel {
    background: var(--glass-surface);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: var(--card-radius);
    box-shadow: var(--shadow-lg);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.glass-panel:hover {
    border-color: rgba(255, 255, 255, 0.2);
}

/* 3D Tilt Card (Interactive) */
.card-3d {
    background: linear-gradient(145deg, rgba(30, 41, 59, 0.8), rgba(15, 23, 42, 0.9));
    border: 1px solid var(--glass-border);
    border-radius: var(--card-radius);
    padding: 2rem;
    position: relative;
    transform-style: preserve-3d;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    overflow: hidden;
}

.card-3d:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6), var(--shadow-glow);
    border-color: var(--primary);
}

.card-3d::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom right, rgba(255, 255, 255, 0.05), transparent);
    opacity: 0;
    transition: opacity 0.3s;
}

.card-3d:hover::before {
    opacity: 1;
}

/* Buttons */
.btn-modern {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border: none;
    color: white;
    padding: 12px 30px;
    border-radius: var(--btn-radius);
    font-weight: 700;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
    transition: all 0.3s ease;
    text-transform: uppercase;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
}

.btn-modern:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.6);
    color: white;
}

.btn-outline-modern {
    background: transparent;
    border: 2px solid var(--glass-border);
    color: var(--text-muted);
    padding: 10px 25px;
    border-radius: var(--btn-radius);
    font-weight: 600;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
}

.btn-outline-modern:hover {
    border-color: var(--text-main);
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.05);
}

/* Inputs */
.input-modern {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--glass-border);
    color: var(--text-main);
    padding: 14px 20px;
    border-radius: 12px;
    width: 100%;
    transition: 0.3s;
    font-size: 1rem;
}

.input-modern:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
    background: rgba(15, 23, 42, 0.9);
}

.input-label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* 
   -----------------
   LAYOUT
   -----------------
*/

/* Header */
.header-modern {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 15px 40px;
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-link-modern {
    color: var(--text-muted);
    font-weight: 600;
    text-decoration: none;
    margin: 0 15px;
    transition: 0.3s;
    font-size: 0.95rem;
    position: relative;
    padding: 5px 0;
}

.nav-link-modern::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.3s;
}

.nav-link-modern:hover,
.nav-link-modern.active {
    color: white;
}

.nav-link-modern:hover::after,
.nav-link-modern.active::after {
    width: 100%;
}

/* Sidebar (Admin) */
.sidebar-modern {
    width: 260px;
    height: 100vh;
    position: fixed;
    left: 0;
    top: 0;
    background: var(--bg-core);
    border-right: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
    z-index: 1000;
}

.sidebar-brand {
    padding: 30px;
    font-size: 1.5rem;
    font-weight: 800;
    color: white;
    border-bottom: 1px solid var(--glass-border);
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, var(--bg-gradient-start), var(--bg-gradient-end));
}

.sidebar-menu {
    list-style: none;
    padding: 20px 10px;
}

.sidebar-item a {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    color: var(--text-muted);
    text-decoration: none;
    border-radius: 8px;
    margin-bottom: 5px;
    transition: 0.2s;
    font-weight: 500;
}

.sidebar-item a:hover,
.sidebar-item a.active {
    background: rgba(59, 130, 246, 0.1);
    color: var(--primary);
}

.sidebar-item a i {
    width: 25px;
    margin-right: 10px;
}

.main-content {
    margin-left: 260px;
    padding: 40px;
    padding-top: 100px;
}

/* 
   -----------------
   PAGE SPECIFICS
   -----------------
*/

/* Hero */
.hero-wrapper {
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 40px;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    letter-spacing: -1px;
    line-height: 1.1;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #fff 0%, #94a3b8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Dashboard Widgets */
.stat-card {
    background: var(--glass-surface);
    border: 1px solid var(--glass-border);
    padding: 25px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    background: rgba(59, 130, 246, 0.1);
    color: var(--primary);
}

.stat-info h3 {
    font-size: 2rem;
    font-weight: 700;
    color: white;
    margin: 0;
}

.stat-info p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin: 0;
    text-transform: uppercase;
    font-weight: 600;
}

/* Prediction Result Circles */
.result-circle {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    margin: 0 auto 20px;
    background: rgba(255, 255, 255, 0.03);
    position: relative;
}

.result-circle::after {
    content: '';
    position: absolute;
    top: -5px;
    left: -5px;
    right: -5px;
    bottom: -5px;
    border-radius: 50%;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-right-color: currentColor;
    animation: spin 2s linear infinite;
}

@keyframes spin {
    100% {
        transform: rotate(360deg);
    }
}

.res-success {
    color: var(--accent);
}

.res-danger {
    color: var(--danger);
}

/* 
   -----------------------------------------------------------------------------
   ADDITIONAL UTILITIES 
   ----------------------------------------------------------------------------- 
*/
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-core);
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* Helper to center content in tables if needed */
.table-center th,
.table-center td {
    text-align: center;
}


/* 
   -----------------------------------------------------------------------------
   ALERTS & NOTIFICATIONS 
   ----------------------------------------------------------------------------- 
*/
.alert-modern {
    background: rgba(15, 23, 42, 0.8);
    border: 1px solid var(--glass-border);
    border-left-width: 4px;
    color: var(--text-main);
    padding: 15px 20px;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    margin-bottom: 20px;
    backdrop-filter: blur(10px);
}

.alert-modern-info {
    border-left-color: var(--primary);
}

.alert-modern-info i {
    color: var(--primary);
}

.alert-modern-success {
    border-left-color: var(--accent);
}

.alert-modern-success i {
    color: var(--accent);
}

.alert-modern-danger {
    border-left-color: var(--danger);
}

.alert-modern-danger i {
    color: var(--danger);
}

.alert-modern-warning {
    border-left-color: #f59e0b;
}

.alert-modern-warning i {
    color: #f59e0b;
}

/* 
   -----------------------------------------------------------------------------
   DATA TABLES (Global Override)
   ----------------------------------------------------------------------------- 
*/
.table-modern {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    color: var(--text-muted);
}

.table-modern thead th {
    background: rgba(30, 41, 59, 0.5);
    color: var(--text-main);
    padding: 15px;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.85rem;
    border-bottom: 1px solid var(--glass-border);
}

.table-modern tbody td {
    padding: 15px;
    border-bottom: 1px solid var(--glass-border);
    transition: 0.2s;
}

.table-modern tbody tr:hover td {
    background: rgba(255, 255, 255, 0.02);
    color: white;
}


/* Fix for background-clip compatibility */
.hero-title,
.metric-icon,
.feature-icon-3d {
    background-clip: text;
}


/* 
   -----------------------------------------------------------------------------
   AUTH LAYOUT ENFORCEMENT 
   ----------------------------------------------------------------------------- 
*/
.auth-container {
    min-height: calc(100vh - 80px);
    /* Adjust for header height */
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

/* 
   -----------------------------------------------------------------------------
   LIGHT THEME OVERRIDES 
   ----------------------------------------------------------------------------- 
   Forces text to be black regardless of Bootstrap utility classes.
*/
.text-white {
    color: var(--text-main) !important;
}

body {
    background-image:
        radial-gradient(circle at 15% 50%, rgba(37, 99, 235, 0.05), transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(124, 58, 237, 0.05), transparent 25%);
}

body.video-enabled {
    background: transparent !important;
}

.input-modern {
    background: #ffffff;
    border: 1px solid #cbd5e1;
    color: #000;
}

.input-modern:focus {
    background: #ffffff;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    border-color: var(--primary);
}

.glass-panel {
    background: rgba(255, 255, 255, 0.75);
    border-color: rgba(226, 232, 240, 0.8);
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.1);
}

.header-modern {
    background: rgba(255, 255, 255, 0.9);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.nav-link-modern {
    color: var(--text-muted);
}

.nav-link-modern:hover,
.nav-link-modern.active {
    color: var(--primary);
    background: rgba(37, 99, 235, 0.05);
}

.sidebar-modern {
    background: #ffffff;
    border-right: 1px solid #e2e8f0;
}

.sidebar-brand {
    color: #0f172a;
    /* Dark text for brand */
    background: #f8fafc;
    border-bottom: 1px solid #e2e8f0;
}

.stat-card {
    background: #ffffff;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.stat-info h3 {
    color: #0f172a;
}


/* 
   -----------------------------------------------------------------------------
   VIDEO BACKGROUND 
   ----------------------------------------------------------------------------- 
*/
.video-bg-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: -1;
}

.video-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.60);
    /* White overlay to ensure black text is visible */
    z-index: 1;
}


/* 
   -----------------------------------------------------------------------------
   USER FEEDBACK FIXES (NAV & HERO) 
   ----------------------------------------------------------------------------- 
*/

/* 1. Transparent Navbar with Black Text */
.header-modern {
    background: transparent !important;
    backdrop-filter: none !important;
    border-bottom: none !important;
    box-shadow: none !important;
}

.nav-link-modern,
.header-modern h4,
.header-modern i {
    color: #000000 !important;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.8);
    /* Halo for readability */
    font-weight: 800 !important;
}

/* 2. Hero Title - Solid Black (Remove Gradient) */
.hero-title {
    background: none !important;
    -webkit-text-fill-color: #000000 !important;
    color: #000000 !important;
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.9);
}

/* 3. Reduce Video Overlay Opacity (Make video more visible) */
.video-overlay {
    background: rgba(255, 255, 255, 0.25) !important;
    /* Reduced for clearer HD video */
}


/* 
   -----------------------------------------------------------------------------
   NAVBAR HOVER - ROUNDED BLACK PILL 
   ----------------------------------------------------------------------------- 
*/

/* Reset the underline animation since we are using pill shape now */
.nav-link-modern::after {
    display: none !important;
}

.nav-link-modern {
    padding: 10px 25px !important;
    border-radius: 50px !important;
    /* Creates the pill/circle shape */
    transition: all 0.3s ease !important;
}

.nav-link-modern:hover,
.nav-link-modern.active {
    background: #000000 !important;
    /* Black Background */
    color: #ffffff !important;
    /* White Text */
    text-shadow: none !important;
    /* Remove halo */
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3) !important;
    transform: translateY(-2px);
}


/* 
   -----------------------------------------------------------------------------
   SCROLL BEHAVIOR FOR NAVBAR 
   ----------------------------------------------------------------------------- 
*/
.header-modern.scrolled {
    background: rgba(255, 255, 255, 0.95) !important;
    /* Solid white opacity */
    backdrop-filter: blur(10px) !important;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1) !important;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05) !important;
    transition: all 0.3s ease;
}


/* 
   -----------------------------------------------------------------------------
   ADMIN PRO THEME - ULTRA PREMIUM 
   ----------------------------------------------------------------------------- 
   Overrides for a sophisticated SaaS-like Admin Interface.
*/

/* 1. Dark Premium Sidebar */
.sidebar-modern {
    background: #0f172a !important;
    /* Deep Slate Blue/Black */
    border-right: none !important;
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.05);
}

.sidebar-brand {
    background: #0f172a !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05) !important;
}

.sidebar-brand .text-dark {
    color: #ffffff !important;
}

.sidebar-item a {
    color: #94a3b8 !important;
    /* Muted Blue-Grey */
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.sidebar-item a:hover,
.sidebar-item a.active {
    background: linear-gradient(90deg, var(--primary), #2563eb) !important;
    color: #ffffff !important;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
    transform: translateX(5px);
}

.sidebar-item a i {
    color: inherit !important;
    /* Icon matches text */
}

/* 2. Enhanced Top Header */
.main-content {
    background: transparent !important;
    /* Transparent to show video background */
    min-height: 100vh;
    margin-left: 260px !important;
    /* Force margin to prevent sidebar overlap */
    padding-top: 40px !important;
    /* Adjust padding if needed */
}

/* 3. Ultra Cards (White on Grey) */
.glass-panel {
    background: #ffffff !important;
    border: none !important;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06) !important;
    /* Tailwind shadow-md */
    border-radius: 12px !important;
}

/* 4. Data Grid Tables */
.table-pro {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0 8px;
    /* Row spacing */
}

.table-pro thead th {
    background: transparent !important;
    color: #64748b !important;
    font-size: 0.75rem !important;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: none !important;
    padding-left: 20px;
}

.table-pro tbody tr {
    background: #ffffff;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.02);
    transition: transform 0.2s;
}

.table-pro tbody tr:hover {
    transform: scale(1.005);
    background: #ffffff !important;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    z-index: 10;
    position: relative;
}

.table-pro td {
    padding: 16px 20px !important;
    border: none !important;
    color: #334155;
    font-weight: 500;
}

.table-pro td:first-child {
    border-top-left-radius: 8px;
    border-bottom-left-radius: 8px;
}

.table-pro td:last-child {
    border-top-right-radius: 8px;
    border-bottom-right-radius: 8px;
}

/* 5. Chart Containers */
.chart-box {
    height: 200px;
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    padding-top: 20px;
}

.chart-bar {
    width: 12%;
    background: var(--primary);
    border-radius: 4px;
    opacity: 0.8;
    transition: height 1s ease;
    border-top-left-radius: 6px;
    border-top-right-radius: 6px;
}

.chart-bar:hover {
    opacity: 1;
    transform: scaleY(1.05);
    background: #1d4ed8;
}