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

:root {
  --primary-color: rgba(255, 255, 255, 0.92);
  --primary-dark: rgba(255, 255, 255, 0.82);
  --primary-light: rgba(255, 255, 255, 0.98);
  --secondary-color: rgba(255, 255, 255, 0.70);
  --success-color: rgba(255, 255, 255, 0.90);
  --danger-color: rgba(255, 255, 255, 0.90);
  --warning-color: rgba(255, 255, 255, 0.90);
  --bg-color: #05060b;
  --card-bg: rgba(255, 255, 255, 0.08);
  --text-primary: rgba(255, 255, 255, 0.92);
  --text-secondary: rgba(255, 255, 255, 0.70);
  --border-color: rgba(255, 255, 255, 0.14);
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.40);
  --shadow-lg: 0 18px 56px rgba(0, 0, 0, 0.55);
  --radius: 14px;
  --radius-lg: 22px;
  --glass-bg: rgba(255, 255, 255, 0.07);
  --glass-bg-strong: rgba(255, 255, 255, 0.11);
  --glass-border: rgba(255, 255, 255, 0.14);
  --glass-blur: 14px;
  --grad-primary: linear-gradient(135deg, rgba(255, 255, 255, 0.92) 0%, rgba(255, 255, 255, 0.70) 55%, rgba(255, 255, 255, 0.92) 100%);
  --grad-danger: linear-gradient(135deg, rgba(255, 255, 255, 0.88) 0%, rgba(255, 255, 255, 0.62) 55%, rgba(255, 255, 255, 0.88) 100%);
  --ring: 0 0 0 4px rgba(255, 255, 255, 0.16);
  --on-grad-primary: rgba(0, 0, 0, 0.92);
  --on-grad-primary-muted: rgba(0, 0, 0, 0.70);
  --on-grad-danger: rgba(0, 0, 0, 0.92);
  --bg-glow-1: rgba(255, 255, 255, 0.14);
  --bg-glow-2: rgba(255, 255, 255, 0.10);
  --bg-glow-3: rgba(255, 255, 255, 0.08);
  --hero-glow-1: rgba(255, 255, 255, 0.18);
  --hero-glow-2: rgba(255, 255, 255, 0.12);
  --hero-glow-3: rgba(255, 255, 255, 0.10);
  --media-glow-1: rgba(255, 255, 255, 0.20);
  --media-glow-2: rgba(255, 255, 255, 0.14);
}

html[data-theme="light"] {
  --primary-color: rgba(0, 0, 0, 0.92);
  --primary-dark: rgba(0, 0, 0, 0.82);
  --primary-light: rgba(0, 0, 0, 0.98);
  --secondary-color: rgba(0, 0, 0, 0.65);
  --success-color: rgba(0, 0, 0, 0.92);
  --danger-color: rgba(0, 0, 0, 0.92);
  --warning-color: rgba(0, 0, 0, 0.92);
  --bg-color: #f7f7f9;
  --card-bg: rgba(0, 0, 0, 0.04);
  --text-primary: rgba(0, 0, 0, 0.92);
  --text-secondary: rgba(0, 0, 0, 0.62);
  --border-color: rgba(0, 0, 0, 0.12);
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.10);
  --shadow-lg: 0 18px 56px rgba(0, 0, 0, 0.16);
  --glass-bg: rgba(255, 255, 255, 0.65);
  --glass-bg-strong: rgba(255, 255, 255, 0.75);
  --glass-border: rgba(0, 0, 0, 0.10);
  --ring: 0 0 0 4px rgba(0, 0, 0, 0.10);
  --grad-primary: linear-gradient(135deg, rgba(0, 0, 0, 0.92) 0%, rgba(0, 0, 0, 0.70) 55%, rgba(0, 0, 0, 0.92) 100%);
  --grad-danger: linear-gradient(135deg, rgba(0, 0, 0, 0.88) 0%, rgba(0, 0, 0, 0.62) 55%, rgba(0, 0, 0, 0.88) 100%);
  --on-grad-primary: rgba(255, 255, 255, 0.96);
  --on-grad-primary-muted: rgba(255, 255, 255, 0.78);
  --on-grad-danger: rgba(255, 255, 255, 0.96);
  --bg-glow-1: rgba(0, 0, 0, 0.06);
  --bg-glow-2: rgba(0, 0, 0, 0.05);
  --bg-glow-3: rgba(0, 0, 0, 0.04);
  --hero-glow-1: rgba(0, 0, 0, 0.08);
  --hero-glow-2: rgba(0, 0, 0, 0.06);
  --hero-glow-3: rgba(0, 0, 0, 0.05);
  --media-glow-1: rgba(0, 0, 0, 0.09);
  --media-glow-2: rgba(0, 0, 0, 0.07);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Cairo', sans-serif;
  background: radial-gradient(1200px 600px at 15% 10%, var(--bg-glow-1), rgba(5, 6, 11, 0) 60%),
    radial-gradient(1000px 600px at 85% 15%, var(--bg-glow-2), rgba(5, 6, 11, 0) 58%),
    radial-gradient(1000px 700px at 60% 90%, var(--bg-glow-3), rgba(5, 6, 11, 0) 55%),
    var(--bg-color);
  background-attachment: fixed;
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.main-header {
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(var(--glass-blur));
  backdrop-filter: blur(var(--glass-blur));
  border-bottom: 1px solid var(--glass-border);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: transform 0.3s ease;
}

.header-hidden {
  transform: translateY(-100%);
}

.main-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 70px;
  height: auto;
  padding-top: 8px;
  padding-bottom: 8px;
  flex-wrap: nowrap;
  gap: 12px;
}

.logo a {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  font-weight: 700;
}

.logo-img {
  height: 40px;
  width: auto;
  border-radius: var(--radius);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: nowrap;
  max-width: 100%;
  overflow-x: auto;
  white-space: nowrap;
  justify-content: flex-end;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: nowrap;
}

.user-name {
  margin: 0 12px;
}

.main-nav .btn {
  margin-left: 8px;
}

.main-nav a {
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  transition: color 0.2s;
}

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

.user-name {
  color: var(--text-primary);
  font-weight: 500;
}

.theme-toggle {
  padding: 8px 12px;
  border-radius: 999px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--grad-primary);
  color: var(--on-grad-primary);
  box-shadow: 0 10px 24px rgba(255, 255, 255, 0.10);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 34px rgba(255, 255, 255, 0.14);
}

.btn-secondary {
  background: var(--glass-bg);
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
  -webkit-backdrop-filter: blur(var(--glass-blur));
  backdrop-filter: blur(var(--glass-blur));
}

.btn-secondary:hover {
  background: var(--glass-bg-strong);
}

.btn-danger {
  background: var(--grad-danger);
  color: var(--on-grad-danger);
}

.btn-danger:hover {
  transform: translateY(-1px);
}

.btn:focus-visible {
  outline: none;
  box-shadow: var(--ring);
}

.btn-full {
  width: 100%;
}

.btn-large {
  padding: 14px 28px;
  font-size: 1.1rem;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.85rem;
}

/* Hero */
.hero {
  background: radial-gradient(900px 420px at 10% 20%, var(--hero-glow-1), rgba(255, 255, 255, 0) 60%),
    radial-gradient(900px 420px at 90% 15%, var(--hero-glow-2), rgba(255, 255, 255, 0) 60%),
    radial-gradient(900px 420px at 50% 90%, var(--hero-glow-3), rgba(255, 255, 255, 0) 58%),
    rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--glass-border);
  color: white;
  padding: 80px 0;
  text-align: center;
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 20px;
}

.hero p {
  font-size: 1.2rem;
  opacity: 0.9;
}

/* Projects Section */
.projects-section {
  padding: 60px 0;
}

.projects-section h2 {
  text-align: center;
  margin-bottom: 40px;
  font-size: 1.8rem;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.project-card {
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(var(--glass-blur));
  backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.project-image {
  height: 180px;
  background: radial-gradient(600px 240px at 20% 30%, var(--media-glow-1), rgba(255, 255, 255, 0) 60%),
    radial-gradient(600px 240px at 90% 20%, var(--media-glow-2), rgba(255, 255, 255, 0) 60%),
    rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: center;
}

.placeholder-img {
  color: white;
  font-size: 1.2rem;
  font-weight: 600;
  text-transform: uppercase;
}

.project-info {
  padding: 20px;
}

.project-info h3 {
  font-size: 1.2rem;
  margin-bottom: 8px;
}

.project-desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 12px;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.tech-tag {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-secondary);
  border: 1px solid rgba(255, 255, 255, 0.10);
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
}

.project-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.price {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 60px 20px;
}

.empty-state p {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

/* Footer */
.main-footer {
  background: rgba(255, 255, 255, 0.04);
  border-top: 1px solid var(--glass-border);
  color: white;
  padding: 40px 0 20px;
  margin-top: auto;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 30px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-logo {
  height: 35px;
  border-radius: var(--radius);
}

.footer-brand p {
  opacity: 0.8;
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-links a {
  color: white;
  text-decoration: none;
  opacity: 0.8;
  transition: opacity 0.2s;
}

.footer-links a:hover {
  opacity: 1;
}

.footer-bottom {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 0.9rem;
  opacity: 0.7;
}

/* Form Elements */
.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-weight: 500;
  color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  font-size: 1rem;
  font-family: inherit;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: var(--ring);
  background: rgba(255, 255, 255, 0.08);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  margin-top: 30px;
}

.inline-form {
  display: inline;
}

.error-message {
  background: rgba(244, 63, 94, 0.12);
  color: rgba(255, 255, 255, 0.92);
  padding: 12px 16px;
  border-radius: var(--radius);
  margin-bottom: 20px;
  border-right: 4px solid rgba(244, 63, 94, 0.9);
}

.success-message {
  background: rgba(52, 199, 89, 0.12);
  color: rgba(255, 255, 255, 0.92);
  padding: 12px 16px;
  border-radius: var(--radius);
  margin-bottom: 20px;
  border-right: 4px solid rgba(52, 199, 89, 0.9);
}

/* Responsive */
@media (max-width: 1024px) {
  .container {
    padding: 0 16px;
  }

  .projects-grid {
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  }
}

@media (max-width: 768px) {
  .main-header .container {
    flex-direction: row;
    align-items: center;
    height: auto;
    padding: 12px 16px;
    gap: 10px;
  }

  .logo a {
    font-size: 1.25rem;
  }

  .logo-img {
    height: 34px;
  }

  .main-nav {
    width: 100%;
    justify-content: center;
    gap: 8px;
    overflow-x: auto;
  }

  .nav-links {
    gap: 8px;
    justify-content: center;
  }

  .main-nav a {
    font-size: 0.85rem;
    padding: 6px 10px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
  }

  .user-name {
    width: 100%;
    text-align: center;
  }

  .btn {
    padding: 10px 14px;
  }
  
  .hero h1 {
    font-size: 1.8rem;
  }

  .hero {
    padding: 50px 0;
  }

  .hero p {
    font-size: 1.05rem;
  }
  
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .projects-section {
    padding: 40px 0;
  }

  .project-card {
    box-shadow: var(--shadow);
    border: 1px solid var(--glass-border);
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    flex-direction: column;
    gap: 20px;
    text-align: center;
  }
}

@media (max-width: 420px) {
  .main-nav {
    gap: 6px;
  }

  .nav-links {
    gap: 6px;
  }

  .main-nav a {
    font-size: 0.8rem;
    padding: 5px 8px;
  }
}