/* ==========================================================================
   ALICODES DEVELOPER PORTFOLIO - CORE DESIGN SYSTEM (2026)
   ========================================================================== */

:root {
  /* Core Color Tokens (Dark Blue Default) */
  --font-main: 'Vazirmatn', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'Fira Code', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  --primary-color: #00f0ff;
  --primary-rgb: 0, 240, 255;
  --primary-hover: #38f8ff;
  --secondary-color: #6366f1;
  --secondary-rgb: 99, 102, 241;
  --accent-color: #ec4899;

  --bg-color: #080d1a;
  --bg-secondary-color: #0f172a;
  --bg-elevated: #1e293b;
  --bg-glass: rgba(15, 23, 42, 0.75);
  --bg-glass-card: rgba(30, 41, 59, 0.6);
  --bg-glass-hover: rgba(30, 41, 59, 0.9);

  --text-color: #f8fafc;
  --text-muted-color: #94a3b8;
  --text-subtle: #64748b;

  --border-color: rgba(255, 255, 255, 0.08);
  --border-color-hover: rgba(0, 240, 255, 0.35);
  --border-glass: rgba(255, 255, 255, 0.12);

  --glow-color: rgba(0, 240, 255, 0.4);
  --glow-subtle: rgba(0, 240, 255, 0.15);
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5), 0 0 1px 1px rgba(255, 255, 255, 0.05);
  --shadow-hover: 0 20px 40px -15px rgba(0, 240, 255, 0.25), 0 0 0 1px rgba(0, 240, 255, 0.3);

  --gradient-primary: linear-gradient(135deg, #00f0ff 0%, #6366f1 100%);
  --gradient-card: linear-gradient(145deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.01) 100%);
  --gradient-glow: radial-gradient(circle at 50% 0%, rgba(0, 240, 255, 0.15), transparent 70%);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Emerald Cyber Theme */
[data-theme='dark-green'] {
  --primary-color: #00ffaa;
  --primary-rgb: 0, 255, 170;
  --primary-hover: #4affc0;
  --secondary-color: #10b981;
  --secondary-rgb: 16, 185, 129;
  --accent-color: #3b82f6;

  --bg-color: #05140e;
  --bg-secondary-color: #0a2118;
  --bg-elevated: #133327;
  --bg-glass: rgba(10, 33, 24, 0.78);
  --bg-glass-card: rgba(19, 51, 39, 0.6);
  --bg-glass-hover: rgba(19, 51, 39, 0.9);

  --border-color: rgba(255, 255, 255, 0.08);
  --border-color-hover: rgba(0, 255, 170, 0.35);

  --glow-color: rgba(0, 255, 170, 0.4);
  --glow-subtle: rgba(0, 255, 170, 0.15);
  --shadow-hover: 0 20px 40px -15px rgba(0, 255, 170, 0.25), 0 0 0 1px rgba(0, 255, 170, 0.3);

  --gradient-primary: linear-gradient(135deg, #00ffaa 0%, #10b981 100%);
  --gradient-glow: radial-gradient(circle at 50% 0%, rgba(0, 255, 170, 0.15), transparent 70%);
}

/* Modern Clean Light Theme */
[data-theme='light'] {
  --primary-color: #0284c7;
  --primary-rgb: 2, 132, 199;
  --primary-hover: #0369a1;
  --secondary-color: #4f46e5;
  --secondary-rgb: 79, 70, 229;
  --accent-color: #d946ef;

  --bg-color: #f8fafc;
  --bg-secondary-color: #f1f5f9;
  --bg-elevated: #ffffff;
  --bg-glass: rgba(248, 250, 252, 0.85);
  --bg-glass-card: rgba(255, 255, 255, 0.85);
  --bg-glass-hover: #ffffff;

  --text-color: #0f172a;
  --text-muted-color: #475569;
  --text-subtle: #94a3b8;

  --border-color: rgba(0, 0, 0, 0.08);
  --border-color-hover: rgba(2, 132, 199, 0.4);
  --border-glass: rgba(0, 0, 0, 0.08);

  --glow-color: rgba(2, 132, 199, 0.25);
  --glow-subtle: rgba(2, 132, 199, 0.08);
  --shadow-card: 0 10px 25px -5px rgba(0, 0, 0, 0.06), 0 0 0 1px rgba(0, 0, 0, 0.04);
  --shadow-hover: 0 20px 35px -10px rgba(2, 132, 199, 0.18), 0 0 0 1px rgba(2, 132, 199, 0.3);

  --gradient-primary: linear-gradient(135deg, #0284c7 0%, #4f46e5 100%);
  --gradient-card: linear-gradient(145deg, rgba(255, 255, 255, 0.9) 0%, rgba(241, 245, 249, 0.8) 100%);
  --gradient-glow: radial-gradient(circle at 50% 0%, rgba(2, 132, 199, 0.08), transparent 70%);
}

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

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
  -webkit-text-size-adjust: 100%;
}

html, body {
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
  position: relative;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.7;
  min-height: 100vh;
  transition: background-color var(--transition-smooth), color var(--transition-smooth);
}

::selection {
  background: rgba(var(--primary-rgb), 0.25);
  color: var(--primary-color);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-color);
}
::-webkit-scrollbar-thumb {
  background: var(--bg-elevated);
  border-radius: var(--radius-full);
  border: 2px solid var(--bg-color);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--primary-color);
}

/* Typography Defaults */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-main);
  color: var(--text-color);
  font-weight: 700;
  line-height: 1.3;
}

p {
  color: var(--text-muted-color);
}

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color var(--transition-fast), transform var(--transition-fast);
}

a:hover {
  color: var(--primary-hover);
}

code, kbd, samp, pre {
  font-family: var(--font-mono);
  direction: ltr;
  text-align: left;
}

/* Layout Container */
.container {
  width: 100%;
  max-width: 1240px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
  box-sizing: border-box;
}

@media (max-width: 768px) {
  .container {
    padding-left: 1rem;
    padding-right: 1rem;
  }
}

section {
  padding: 5.5rem 0;
  position: relative;
}

@media (max-width: 768px) {
  section {
    padding: 3.8rem 0;
  }
}

/* ==========================================================================
   Interactive Buttons & Badges
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  font-family: var(--font-main);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.75rem 1.6rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
  user-select: none;
}

.btn-primary {
  background: var(--gradient-primary);
  color: #070d18;
  font-weight: 700;
  box-shadow: 0 4px 20px var(--glow-subtle);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px var(--glow-color);
  color: #000;
}

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

.btn-secondary {
  background: var(--bg-elevated);
  color: var(--text-color);
  border-color: var(--border-glass);
}

.btn-secondary:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-color-hover);
  color: var(--primary-color);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--text-color);
  border-color: var(--border-color);
}

.btn-outline:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
  background: rgba(var(--primary-rgb), 0.06);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
  border-radius: var(--radius-sm);
}

.btn-icon {
  width: 42px;
  height: 42px;
  padding: 0;
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* Badges & Chips */
.tech-badge {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full);
  background: rgba(var(--primary-rgb), 0.08);
  color: var(--primary-color);
  border: 1px solid rgba(var(--primary-rgb), 0.2);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: all var(--transition-fast);
}

.tech-badge:hover {
  background: rgba(var(--primary-rgb), 0.16);
  border-color: var(--primary-color);
  transform: translateY(-1px);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  background: rgba(16, 185, 129, 0.1);
  color: #10b981;
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #10b981;
  position: relative;
}

.status-dot::after {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  background: inherit;
  opacity: 0.6;
  animation: pulse-ring 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse-ring {
  0% { transform: scale(0.9); opacity: 0.8; }
  50% { transform: scale(1.6); opacity: 0; }
  100% { transform: scale(0.9); opacity: 0; }
}

/* ==========================================================================
   Section Headers & Section Dividers
   ========================================================================== */

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 3.5rem;
}

.section-tag {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--primary-color);
  background: rgba(var(--primary-rgb), 0.1);
  border: 1px solid rgba(var(--primary-rgb), 0.2);
  padding: 0.35rem 1rem;
  border-radius: var(--radius-full);
  display: inline-block;
  margin-bottom: 1rem;
  letter-spacing: 0.5px;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  margin-bottom: 0.8rem;
  letter-spacing: -0.5px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted-color);
  line-height: 1.6;
}

.glow-separator {
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(var(--primary-rgb), 0.5) 50%, transparent 100%);
  margin: 1.5rem auto;
  width: 70%;
  position: relative;
}

.glow-separator::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: 120px;
  height: 3px;
  background: var(--primary-color);
  filter: blur(4px);
  border-radius: 50%;
}

/* ==========================================================================
   Particles & Background Effects
   ========================================================================== */

#particles-js {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.45;
}

.bg-radial-glow {
  position: absolute;
  width: min(600px, 90vw);
  height: min(600px, 90vw);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(var(--primary-rgb), 0.12) 0%, transparent 70%);
  top: 10%;
  left: 50%;
  transform: translateX(-50%);
  pointer-events: none;
  z-index: -1;
  filter: blur(60px);
  max-width: 100vw;
}