/* ===================================
   CSS Custom Properties & Design System
   BLACK + EMERALD + GOLD PREMIUM THEME
   =================================== */

:root {
    --is-dark: 1;

    /* Primary — Emerald Green */
    --primary-50:  #ecfdf5;
    --primary-100: #d1fae5;
    --primary-200: #a7f3d0;
    --primary-300: #6ee7b7;
    --primary-400: #34d399;
    --primary-500: #10b981;
    --primary-600: #059669;
    --primary-700: #047857;
    --primary-800: #065f46;
    --primary-900: #064e3b;

    /* Accent — Gold / Amber */
    --accent-50:  #fffbeb;
    --accent-100: #fef3c7;
    --accent-200: #fde68a;
    --accent-300: #fcd34d;
    --accent-400: #fbbf24;
    --accent-500: #f59e0b;
    --accent-600: #d97706;
    --accent-700: #b45309;

    /* Secondary — Coral/Orange */
    --secondary-400: #fb923c;
    --secondary-500: #f97316;
    --secondary-600: #ea580c;

    /* Cyan — Electric */
    --cyan-300: #67e8f9;
    --cyan-400: #22d3ee;
    --cyan-500: #06b6d4;

    /* System */
    --success-400: #34d399;
    --success-500: #10b981;
    --success-600: #059669;
    --success-700: #047857;
    --warning-400: #fbbf24;
    --warning-500: #f59e0b;
    --warning-600: #d97706;
    --error-400:   #f87171;
    --error-500:   #ef4444;
    --error-600:   #dc2626;

    /* Neutrals */
    --gray-50:  #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --gray-950: #030712;

    /* ── BLACK BACKGROUND SYSTEM ── */
    --bg-primary:   #000000;
    --bg-secondary: #070707;
    --bg-tertiary:  #101010;
    --bg-card:      rgba(8, 8, 8, 0.92);
    --text-primary:   #f8fafc;
    --text-secondary: #a1b1c2;
    --text-muted:     #4a5568;
    --border-color:   rgba(16, 185, 129, 0.28);
    --border-light:   rgba(255, 255, 255, 0.07);

    /* Gradients */
    --gradient-primary:  linear-gradient(135deg, #10b981 0%, #059669 50%, #047857 100%);
    --gradient-secondary: linear-gradient(135deg, #f59e0b 0%, #f97316 100%);
    --gradient-accent:   linear-gradient(135deg, #34d399 0%, #10b981 100%);
    --gradient-gold:     linear-gradient(135deg, #fbbf24 0%, #f59e0b 50%, #d97706 100%);
    --gradient-hero:     linear-gradient(135deg, #000000 0%, #020202 50%, #060606 100%);
    --gradient-card:     linear-gradient(145deg, rgba(16,185,129,0.07) 0%, rgba(6,182,212,0.03) 100%);
    --gradient-glow:     radial-gradient(circle, rgba(16,185,129,0.22) 0%, transparent 70%);

    /* Glass */
    --glass-bg:     rgba(8, 8, 8, 0.92);
    --glass-border: rgba(16, 185, 129, 0.22);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.85);
    --glass-blur:   blur(22px);

    /* Typography */
    --font-family: 'Outfit', 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs:   0.75rem;
    --font-size-sm:   0.875rem;
    --font-size-base: 1rem;
    --font-size-lg:   1.125rem;
    --font-size-xl:   1.25rem;
    --font-size-2xl:  1.5rem;
    --font-size-3xl:  1.875rem;
    --font-size-4xl:  2.25rem;
    --font-size-5xl:  3rem;
    --font-size-6xl:  3.75rem;

    /* Spacing */
    --space-1:  0.25rem;
    --space-2:  0.5rem;
    --space-3:  0.75rem;
    --space-4:  1rem;
    --space-5:  1.25rem;
    --space-6:  1.5rem;
    --space-8:  2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;

    /* Radii */
    --radius-sm:   0.375rem;
    --radius-md:   0.5rem;
    --radius-lg:   0.75rem;
    --radius-xl:   1rem;
    --radius-2xl:  1.5rem;
    --radius-3xl:  2rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm:  0 1px 2px 0 rgba(0,0,0,0.12);
    --shadow-md:  0 4px 6px -1px rgba(0,0,0,0.25), 0 2px 4px -1px rgba(0,0,0,0.15);
    --shadow-lg:  0 10px 15px -3px rgba(0,0,0,0.35), 0 4px 6px -2px rgba(0,0,0,0.2);
    --shadow-xl:  0 20px 25px -5px rgba(0,0,0,0.5), 0 10px 10px -5px rgba(0,0,0,0.25);
    --shadow-2xl: 0 25px 50px -12px rgba(0,0,0,0.7);
    --shadow-glow:        0 0 40px rgba(16,185,129,0.45);
    --shadow-glow-accent: 0 0 40px rgba(245,158,11,0.35);
    --shadow-neon:        0 0 5px var(--primary-500), 0 0 20px rgba(16,185,129,0.35), 0 0 45px rgba(16,185,129,0.2);

    /* Transitions */
    --transition-fast:   150ms cubic-bezier(0.4,0,0.2,1);
    --transition-base:   250ms cubic-bezier(0.4,0,0.2,1);
    --transition-slow:   350ms cubic-bezier(0.4,0,0.2,1);
    --transition-bounce: 500ms cubic-bezier(0.68,-0.55,0.265,1.55);
    --transition-spring: 500ms cubic-bezier(0.175,0.885,0.32,1.275);
}

/* ===================================
   Light Theme
   =================================== */

[data-theme="light"] {
    --is-dark: 0;

    --bg-primary:   #f0fdf4;
    --bg-secondary: #ecfdf5;
    --bg-tertiary:  #d1fae5;
    --bg-card:      rgba(255,255,255,0.95);
    --text-primary:   #064e3b;
    --text-secondary: #047857;
    --text-muted:     #6b7280;
    --border-color:   rgba(16,185,129,0.2);
    --border-light:   rgba(16,185,129,0.1);

    --gradient-hero: linear-gradient(135deg,#f0fdf4 0%,#ecfdf5 50%,#d1fae5 100%);
    --glass-bg:     rgba(255,255,255,0.9);
    --glass-border: rgba(16,185,129,0.25);
    --glass-shadow: 0 8px 32px rgba(16,185,129,0.12);
    --shadow-glow:  0 0 40px rgba(16,185,129,0.2);
}

[data-theme="light"] body { color: var(--text-primary); }

[data-theme="light"] h1,[data-theme="light"] h2,
[data-theme="light"] h3,[data-theme="light"] h4,
[data-theme="light"] h5,[data-theme="light"] h6 { color: var(--text-primary); }

[data-theme="light"] .navbar {
    background: rgba(255,255,255,0.92);
    border-bottom-color: var(--border-color);
}
[data-theme="light"] .navbar.scrolled {
    background: rgba(255,255,255,0.99);
    box-shadow: 0 4px 30px rgba(16,185,129,0.1);
}

[data-theme="light"] .nav-logo,
[data-theme="light"] .nav-links a { color: var(--text-primary); }
[data-theme="light"] .nav-links a:hover { color: var(--primary-600); }

[data-theme="light"] .btn-outline {
    color: var(--text-primary);
    border-color: var(--border-color);
}

[data-theme="light"] .card {
    background: var(--bg-card);
    border-color: var(--border-color);
}
[data-theme="light"] .sidebar {
    background: var(--bg-card);
    border-color: var(--border-color);
}
[data-theme="light"] .sidebar-link { color: var(--text-muted); }
[data-theme="light"] .sidebar-link:hover,
[data-theme="light"] .sidebar-link.active {
    color: var(--primary-600);
    background: rgba(16,185,129,0.1);
}
[data-theme="light"] .form-input,
[data-theme="light"] .form-select,
[data-theme="light"] .form-textarea {
    background: rgba(255,255,255,0.9);
    border-color: var(--border-color);
    color: var(--text-primary);
}
[data-theme="light"] .footer { background: var(--bg-secondary); }

/* ===================================
   Reset & Base
   =================================== */

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

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

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--text-primary);
    background: #000000;
    min-height: 100vh;
    overflow-x: hidden;
    transition: background var(--transition-slow), color var(--transition-slow);
}

/* Deep cinematic background orbs */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse at 18% 82%, rgba(16,185,129,0.13) 0%, transparent 48%),
        radial-gradient(ellipse at 82% 18%, rgba(6,182,212,0.09)  0%, transparent 48%),
        radial-gradient(ellipse at 50% 50%, rgba(245,158,11,0.05) 0%, transparent 38%);
    z-index: -2;
    animation: backgroundFloat 22s ease-in-out infinite;
    pointer-events: none;
}

/* Gold drifting orb (top-right) */
body::after {
    content: '';
    position: fixed;
    top: 8%;
    right: 8%;
    width: 420px;
    height: 420px;
    background: radial-gradient(circle, rgba(245,158,11,0.09) 0%, transparent 68%);
    border-radius: 50%;
    z-index: -1;
    animation: orbFloat 17s ease-in-out infinite;
    pointer-events: none;
}

/* Subtle dot-grid texture */
body {
    background-image:
        radial-gradient(rgba(16,185,129,0.07) 1px, transparent 1px);
    background-size: 32px 32px;
}

@keyframes backgroundFloat {
    0%,100% { transform:translateY(0) scale(1);   opacity:1;   }
    50%      { transform:translateY(-18px) scale(1.02); opacity:0.85; }
}

@keyframes orbFloat {
    0%,100% { transform:translate(0,0)    scale(1);    }
    25%      { transform:translate(-28px,18px) scale(1.05); }
    50%      { transform:translate(18px,-28px) scale(0.95); }
    75%      { transform:translate(28px,8px)  scale(1.03); }
}

a { color:inherit; text-decoration:none; transition:color var(--transition-fast); }
a:hover { color:var(--primary-400); }
img { max-width:100%; height:auto; }
button { font-family:inherit; cursor:pointer; border:none; background:none; }
input,textarea,select { font-family:inherit; font-size:inherit; }
ul,ol { list-style:none; }

/* ===================================
   Typography
   =================================== */

h1,h2,h3,h4,h5,h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

h1 { font-size:var(--font-size-5xl); font-weight:800; }
h2 { font-size:var(--font-size-4xl); font-weight:700; }
h3 { font-size:var(--font-size-3xl); }
h4 { font-size:var(--font-size-2xl); }
h5 { font-size:var(--font-size-xl);  }
h6 { font-size:var(--font-size-lg);  }

/* Green → Cyan → Gold gradient text */
.text-gradient {
    background: linear-gradient(135deg, #10b981 0%, #06b6d4 45%, #f59e0b 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% auto;
    animation: gradientShift 4s ease-in-out infinite;
}

@keyframes gradientShift {
    0%,100% { background-position:0% center; }
    50%      { background-position:100% center; }
}

.text-glow {
    text-shadow: 0 0 24px rgba(16,185,129,0.55), 0 0 48px rgba(16,185,129,0.25);
}

/* ===================================
   Theme Toggle
   =================================== */

.theme-toggle {
    position: relative;
    width: 60px;
    height: 32px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, #000000 0%, #0d1f14 100%);
    border: 2px solid var(--glass-border);
    cursor: pointer;
    transition: all var(--transition-base);
    overflow: hidden;
}

.theme-toggle::before {
    content: '🌙';
    position: absolute;
    left: 4px;
    top: 50%;
    transform: translateY(-50%);
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    background: #ffffff;
    border-radius: 50%;
    transition: all var(--transition-base);
    box-shadow: 0 2px 10px rgba(0,0,0,0.4);
}

[data-theme="light"] .theme-toggle {
    background: linear-gradient(135deg, #87CEEB 0%, #FFD700 100%);
}
[data-theme="light"] .theme-toggle::before {
    content: '☀️';
    left: calc(100% - 28px);
    background: #fff;
}

.theme-toggle:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-glow);
}

.theme-toggle .stars {
    position: absolute;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.theme-toggle .stars::before,
.theme-toggle .stars::after {
    content: '✨';
    position: absolute;
    font-size: 8px;
    opacity: 0.7;
    animation: twinkle 2s ease-in-out infinite;
}

.theme-toggle .stars::before { top:4px;    right:8px;  animation-delay:0.5s; }
.theme-toggle .stars::after  { bottom:4px; right:16px; }

[data-theme="light"] .theme-toggle .stars::before,
[data-theme="light"] .theme-toggle .stars::after { opacity:0; }

@keyframes twinkle {
    0%,100% { opacity:0.4; transform:scale(0.8); }
    50%      { opacity:1;   transform:scale(1.2); }
}

/* ===================================
   Utilities
   =================================== */

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.flex         { display:flex; }
.flex-col     { flex-direction:column; }
.items-center { align-items:center; }
.justify-center   { justify-content:center; }
.justify-between  { justify-content:space-between; }
.gap-2  { gap:var(--space-2); }
.gap-4  { gap:var(--space-4); }
.gap-6  { gap:var(--space-6); }
.gap-8  { gap:var(--space-8); }
.text-center  { text-align:center; }
.text-left    { text-align:left;   }
.text-right   { text-align:right;  }
.hidden   { display:none  !important; }
.visible  { display:block !important; }
.mt-4 { margin-top:var(--space-4); }
.mt-6 { margin-top:var(--space-6); }
.mt-8 { margin-top:var(--space-8); }
.mb-4 { margin-bottom:var(--space-4); }
.mb-6 { margin-bottom:var(--space-6); }
.mb-8 { margin-bottom:var(--space-8); }

/* ===================================
   Animations
   =================================== */

@keyframes fadeIn    { from{opacity:0} to{opacity:1} }
@keyframes fadeInUp  { from{opacity:0;transform:translateY(40px)} to{opacity:1;transform:translateY(0)} }
@keyframes fadeInDown{ from{opacity:0;transform:translateY(-40px)} to{opacity:1;transform:translateY(0)} }
@keyframes fadeInRight { from{opacity:0;transform:translateX(60px)} to{opacity:1;transform:translateX(0)} }

@keyframes slideInLeft  { from{opacity:0;transform:translateX(-60px)} to{opacity:1;transform:translateX(0)} }
@keyframes slideInRight { from{opacity:0;transform:translateX(60px)}  to{opacity:1;transform:translateX(0)} }
@keyframes scaleIn { from{opacity:0;transform:scale(0.8)} to{opacity:1;transform:scale(1)} }

@keyframes float {
    0%,100% { transform:translateY(0)   rotate(0deg);  }
    25%      { transform:translateY(-10px) rotate(1deg);  }
    50%      { transform:translateY(-20px) rotate(0deg);  }
    75%      { transform:translateY(-10px) rotate(-1deg); }
}

@keyframes pulse {
    0%,100% { opacity:1;   transform:scale(1);    }
    50%      { opacity:0.8; transform:scale(1.02); }
}

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

/* Green/gold glow pulse */
@keyframes glow {
    0%,100% {
        box-shadow: 0 0 22px rgba(16,185,129,0.4),
                    0 0 8px rgba(16,185,129,0.2);
    }
    50% {
        box-shadow: 0 0 45px rgba(16,185,129,0.65),
                    0 0 75px rgba(6,182,212,0.3),
                    0 0 20px rgba(245,158,11,0.15);
    }
}

@keyframes borderGlow {
    0%,100% { border-color:rgba(16,185,129,0.3);  }
    50%      { border-color:rgba(6,182,212,0.55);  }
}

@keyframes rotateGradient { 0%{filter:hue-rotate(0deg)} 100%{filter:hue-rotate(360deg)} }

/* Scan / sweep effect */
@keyframes scanSweep {
    0%   { transform:translateY(-100%); opacity:0; }
    10%  { opacity:0.6; }
    90%  { opacity:0.6; }
    100% { transform:translateY(100%);  opacity:0; }
}

/* Neon flicker */
@keyframes neonFlicker {
    0%,95%,100%    { opacity:1; }
    96%,98%        { opacity:0.7; }
    97%,99%        { opacity:0.9; }
}

.animate-fadeIn       { animation:fadeIn       var(--transition-base) ease-out; }
.animate-fadeInUp     { animation:fadeInUp     0.6s ease-out; }
.animate-fadeInDown   { animation:fadeInDown   0.6s ease-out; }
.animate-slideInLeft  { animation:slideInLeft  0.6s ease-out; }
.animate-slideInRight { animation:slideInRight 0.6s ease-out; }
.animate-scaleIn      { animation:scaleIn      var(--transition-base) ease-out; }
.animate-float        { animation:float 6s ease-in-out infinite; }
.animate-pulse        { animation:pulse 2s ease-in-out infinite; }
.animate-glow         { animation:glow  3s ease-in-out infinite; }
.animate-border-glow  { animation:borderGlow 3s ease-in-out infinite; }

.delay-100 { animation-delay:100ms; }
.delay-200 { animation-delay:200ms; }
.delay-300 { animation-delay:300ms; }
.delay-400 { animation-delay:400ms; }
.delay-500 { animation-delay:500ms; }
.delay-600 { animation-delay:600ms; }
.delay-700 { animation-delay:700ms; }

/* Hover helpers */
.hover-lift { transition:transform var(--transition-base),box-shadow var(--transition-base); }
.hover-lift:hover { transform:translateY(-8px); box-shadow:var(--shadow-xl); }
.hover-glow:hover { box-shadow:var(--shadow-glow); }
.hover-scale { transition:transform var(--transition-base); }
.hover-scale:hover { transform:scale(1.05); }

/* ===================================
   Scrollbar
   =================================== */

::-webkit-scrollbar { width:8px; height:8px; }

::-webkit-scrollbar-track {
    background: rgba(0,0,0,0.5);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--primary-600), var(--accent-600));
    border-radius: var(--radius-full);
    border: 2px solid transparent;
    background-clip: padding-box;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--primary-400), var(--accent-400));
}

[data-theme="light"] ::-webkit-scrollbar-track {
    background: rgba(16,185,129,0.08);
}

/* ===================================
   Selection
   =================================== */

::selection {
    background: rgba(16,185,129,0.38);
    color: white;
}

[data-theme="light"] ::selection {
    background: rgba(16,185,129,0.28);
    color: var(--text-primary);
}

/* ===================================
   Responsive
   =================================== */

@media (max-width: 768px) {
    h1 { font-size:var(--font-size-4xl); }
    h2 { font-size:var(--font-size-3xl); }
    h3 { font-size:var(--font-size-2xl); }
    .container { padding:0 var(--space-4); }
    body::after { width:200px; height:200px; }
}

@media (max-width: 480px) {
    h1 { font-size:var(--font-size-3xl); }
    h2 { font-size:var(--font-size-2xl); }
    h3 { font-size:var(--font-size-xl);  }
}

/* ===================================
   Focus States
   =================================== */

:focus-visible { outline:2px solid var(--primary-500); outline-offset:2px; }

button:focus-visible,a:focus-visible,
input:focus-visible,select:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--primary-500);
    outline-offset: 2px;
    box-shadow: 0 0 0 4px rgba(16,185,129,0.2);
}