/* ==========================================================================
   KAYRA ÖZER - ARCHITECTURAL PORTFOLIO & 3D VISUALIZATION STYLESHEET
   Aesthetic: Architectural Minimalist Dark & Warm Champagne Gold Accents
   ========================================================================== */

:root {
  --bg-dark: #0a0c0f;
  --bg-card: #12161c;
  --bg-card-hover: #171d25;
  --accent: #d4af37;
  --accent-light: #f3d474;
  --accent-glow: rgba(212, 175, 55, 0.25);
  --text-light: #f3f4f6;
  --text-muted: #9ca3af;
  --border-subtle: rgba(255, 255, 255, 0.07);
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--bg-dark);
  color: var(--text-light);
  overflow-x: hidden;
  line-height: 1.6;
}

/* Typography Helpers */
.font-display {
  font-family: var(--font-display);
}

.text-gradient {
  background: linear-gradient(135deg, #ffffff 30%, var(--accent-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Custom Container */
.container-custom {
  width: 100%;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

/* Architectural Grid Pattern */
.bg-grid-pattern {
  background-size: 40px 40px;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
}

/* Custom Buttons */
.btn-accent {
  background: linear-gradient(135deg, var(--accent) 0%, #b89327 100%);
  color: #0b0d10;
  font-weight: 700;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  text-decoration: none;
}

.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px var(--accent-glow);
  filter: brightness(1.1);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: #ffffff;
  border: 1px solid var(--border-subtle);
  backdrop-blur: 10px;
  transition: all 0.25s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  text-decoration: none;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.btn-outline {
  border: 1px solid var(--border-subtle);
  background: transparent;
  transition: all 0.25s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  text-decoration: none;
}

/* Project Card Styling */
.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 1rem;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  transform: translateY(-6px);
  border-color: rgba(212, 175, 55, 0.4);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5), 0 0 20px rgba(212, 175, 55, 0.1);
}

.project-card .img-wrapper {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background-color: #000;
}

.project-card .img-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.project-card:hover .img-wrapper img {
  transform: scale(1.06);
}

/* Filter Buttons */
.filter-btn {
  background: rgba(255, 255, 255, 0.03);
  color: #9ca3af;
  border: 1px solid var(--border-subtle);
  cursor: pointer;
}

.filter-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
}

.filter-btn.active {
  background: var(--accent);
  color: #0b0d10;
  border-color: var(--accent);
  font-weight: 700;
  box-shadow: 0 4px 15px var(--accent-glow);
}

/* Calculator Interactive Buttons */
.calc-btn.active, .speed-btn.active {
  border-color: var(--accent);
  background: rgba(212, 175, 55, 0.12);
  box-shadow: 0 0 15px rgba(212, 175, 55, 0.15);
}

/* Custom Scrollbar for Gallery */
.scrollbar-thin::-webkit-scrollbar {
  height: 6px;
}
.scrollbar-thin::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 4px;
}
.scrollbar-thin::-webkit-scrollbar-thumb {
  background: var(--accent);
  border-radius: 4px;
}

/* Form Inputs */
.form-input {
  width: 100%;
  padding: 0.75rem 1rem;
  background-color: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 0.75rem;
  color: #ffffff;
  font-size: 0.875rem;
  font-family: inherit;
  transition: all 0.2s ease;
  outline: none;
}

.form-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.2);
  background-color: rgba(255, 255, 255, 0.06);
}

.form-input option {
  background-color: #12161c;
  color: #ffffff;
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

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

/* Custom Range Input */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  height: 8px;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  box-shadow: 0 0 10px var(--accent-glow);
}