/* ============================================
   Architecture Studio - Dark Steel & Fire Theme
   Primary: #1a1a1a | Secondary: #ff6b35
   ============================================ */

/* === ROOT VARIABLES === */
:root {
  --primary-color: #1a1a1a;
  --secondary-color: #ff6b35;
  --accent-color: #ff8557;
  --dark-bg: #0d0d0d;
  --light-text: #f5f5f5;
  --gray-text: #b8b8b8;
  --steel-gray: #4a4a4a;
  --border-color: #2a2a2a;
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.2s ease;
  --shadow-glow: 0 0 30px rgba(255, 107, 53, 0.3);
  --shadow-steel: 0 8px 32px rgba(0, 0, 0, 0.6);
}

/* === BASE STYLES === */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  background-color: var(--primary-color);
  color: var(--light-text);
  line-height: 1.6;
  overflow-x: hidden;
}

/* === TYPOGRAPHY === */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
  color: var(--light-text);
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 800;
}

h2 {
  font-size: clamp(2rem, 4vw, 3.5rem);
  position: relative;
  display: inline-block;
}

h2::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 0;
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--secondary-color), transparent);
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
}

p {
  margin-bottom: 1rem;
  color: var(--gray-text);
  font-size: 1.0625rem;
}

a {
  color: var(--secondary-color);
  text-decoration: none;
  transition: var(--transition-fast);
}

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

/* === BOOTSTRAP 5 OVERRIDES === */
.container {
  max-width: 1320px;
}

.btn {
  font-weight: 600;
  padding: 0.875rem 2rem;
  border-radius: 0;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.9375rem;
  border: none;
  position: relative;
  overflow: hidden;
  transition: var(--transition-smooth);
  z-index: 1;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transition: left 0.5s ease;
  z-index: -1;
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background-color: var(--secondary-color);
  color: var(--light-text);
  box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
}

.btn-primary:hover,
.btn-primary:focus,
.btn-primary:active {
  background-color: var(--accent-color);
  color: var(--light-text);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.btn-outline-primary {
  border: 2px solid var(--secondary-color);
  color: var(--secondary-color);
  background-color: transparent;
}

.btn-outline-primary:hover,
.btn-outline-primary:focus,
.btn-outline-primary:active {
  background-color: var(--secondary-color);
  color: var(--light-text);
  border-color: var(--secondary-color);
  transform: translateY(-2px);
}

.btn-secondary {
  background-color: var(--steel-gray);
  color: var(--light-text);
}

.btn-secondary:hover,
.btn-secondary:focus,
.btn-secondary:active {
  background-color: var(--primary-color);
  color: var(--light-text);
}

.form-control,
.form-select {
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--light-text);
  padding: 0.875rem 1rem;
  border-radius: 0;
  transition: var(--transition-smooth);
}

.form-control:focus,
.form-select:focus {
  background-color: rgba(255, 255, 255, 0.08);
  border-color: var(--secondary-color);
  color: var(--light-text);
  box-shadow: 0 0 0 0.25rem rgba(255, 107, 53, 0.15);
}

.form-control::placeholder {
  color: var(--gray-text);
  opacity: 0.7;
}

.form-label {
  color: var(--light-text);
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.card {
  background-color: var(--dark-bg);
  border: 1px solid var(--border-color);
  border-radius: 0;
  overflow: hidden;
  transition: var(--transition-smooth);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-steel);
  border-color: var(--secondary-color);
}

.card-body {
  padding: 2rem;
}

.card-title {
  color: var(--light-text);
  font-weight: 700;
}

.card-text {
  color: var(--gray-text);
}

/* === NAVIGATION === */
.navbar {
  background-color: rgba(26, 26, 26, 0.95);
  backdrop-filter: blur(10px);
  padding: 1rem 0;
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition-smooth);
}

.navbar.scrolled {
  box-shadow: var(--shadow-steel);
  padding: 0.5rem 0;
}

.navbar-brand {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--light-text);
  letter-spacing: -0.02em;
  transition: var(--transition-fast);
}

.navbar-brand span {
  color: var(--secondary-color);
}

.navbar-brand:hover {
  color: var(--secondary-color);
}

.navbar-nav .nav-link {
  color: var(--gray-text);
  font-weight: 500;
  padding: 0.5rem 1.25rem;
  position: relative;
  transition: var(--transition-fast);
  text-transform: uppercase;
  font-size: 0.9375rem;
  letter-spacing: 0.05em;
}

.navbar-nav .nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background-color: var(--secondary-color);
  transform: translateX(-50%);
  transition: var(--transition-smooth);
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
  color: var(--secondary-color);
}

.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link.active::after {
  width: 80%;
}

.navbar-toggler {
  border: none;
  padding: 0.5rem;
  transition: var(--transition-fast);
}

.navbar-toggler:focus {
  box-shadow: none;
}

.navbar-toggler-icon {
  background-image: none;
  width: 30px;
  height: 20px;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.navbar-toggler-icon::before,
.navbar-toggler-icon::after,
.navbar-toggler-icon span {
  content: '';
  width: 100%;
  height: 2px;
  background-color: var(--secondary-color);
  transition: var(--transition-smooth);
  display: block;
}

.navbar-toggler[aria-expanded="true"] .navbar-toggler-icon::before {
  transform: translateY(9px) rotate(45deg);
}

.navbar-toggler[aria-expanded="true"] .navbar-toggler-icon::after {
  transform: translateY(-9px) rotate(-45deg);
}

.navbar-toggler[aria-expanded="true"] .navbar-toggler-icon span {
  opacity: 0;
}

/* === HERO SECTION === */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--dark-bg) 0%, var(--primary-color) 100%);
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(rgba(26, 26, 26, 0.8), rgba(26, 26, 26, 0.9)),
    url('data:image/svg+xml,%3Csvg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"%3E%3Cg fill="none" fill-rule="evenodd"%3E%3Cg fill="%23ff6b35" fill-opacity="0.03"%3E%3Cpath d="M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z"/%3E%3C/g%3E%3C/g%3E%3C/svg%3E');
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  animation: fadeInUp 1s ease-out;
}

.hero-title {
  margin-bottom: 1.5rem;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.hero-subtitle {
  font-size: clamp(1.25rem, 2vw, 1.5rem);
  color: var(--gray-text);
  margin-bottom: 2.5rem;
  max-width: 600px;
}

.hero-accent {
  color: var(--secondary-color);
  font-weight: 800;
}

/* === SECTION STYLES === */
section {
  padding: 5rem 0;
  position: relative;
}

.section-dark {
  background-color: var(--dark-bg);
}

.section-primary {
  background-color: var(--primary-color);
}

.section-steel {
  background: linear-gradient(180deg, var(--primary-color) 0%, var(--dark-bg) 100%);
}

.section-title {
  text-align: center;
  margin-bottom: 4rem;
}

.section-subtitle {
  text-align: center;
  color: var(--gray-text);
  font-size: 1.25rem;
  margin-top: 1rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

/* === PROJECT CARDS === */
.project-card {
  position: relative;
  overflow: hidden;
  height: 400px;
  cursor: pointer;
}

.project-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-smooth);
}

.project-card:hover .project-card-img {
  transform: scale(1.1);
}

.project-card-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to top, rgba(26, 26, 26, 0.95) 0%, transparent 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 2rem;
  transform: translateY(20px);
  opacity: 0;
  transition: var(--transition-smooth);
}

.project-card:hover .project-card-overlay {
  transform: translateY(0);
  opacity: 1;
}

.project-card-title {
  color: var(--light-text);
  font-size: 1.75rem;
  margin-bottom: 0.5rem;
}

.project-card-category {
  color: var(--secondary-color);
  font-size: 0.9375rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 600;
}

/* === SERVICES === */
.service-item {
  padding: 2.5rem;
  background-color: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  transition: var(--transition-smooth);
  height: 100%;
}

.service-item:hover {
  background-color: rgba(255, 255, 255, 0.05);
  border-color: var(--secondary-color);
  transform: translateY(-5px);
  box-shadow: var(--shadow-steel);
}

.service-icon {
  width: 70px;
  height: 70px;
  background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  font-size: 2rem;
  color: var(--light-text);
  position: relative;
}

.service-icon::after {
  content: '';
  position: absolute;
  top: -5px;
  right: -5px;
  width: 20px;
  height: 20px;
  border-top: 2px solid var(--secondary-color);
  border-right: 2px solid var(--secondary-color);
}

.service-title {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--light-text);
}

/* === STATS SECTION === */
.stats-section {
  background: linear-gradient(135deg, var(--secondary-color) 0%, var(--accent-color) 100%);
  position: relative;
}

.stats-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url('data:image/svg+xml,%3Csvg width="100" height="100" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg"%3E%3Cpath d="M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM12 86c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm28-65c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm23-11c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-6 60c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm29 22c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zM32 63c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm57-13c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-9-21c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM60 91c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM35 41c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM12 60c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2z" fill="%23ffffff" fill-opacity="0.1" fill-rule="evenodd"/%3E%3C/svg%3E');
  opacity: 0.3;
}

.stat-item {
  text-align: center;
  position: relative;
  z-index: 1;
}

.stat-number {
  font-size: clamp(3rem, 5vw, 4.5rem);
  font-weight: 800;
  color: var(--light-text);
  line-height: 1;
  margin-bottom: 0.5rem;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.stat-label {
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.9);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 600;
}

/* === TESTIMONIALS === */
.testimonial-card {
  background-color: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  padding: 2.5rem;
  position: relative;
  transition: var(--transition-smooth);
}

.testimonial-card::before {
  content: '"';
  position: absolute;
  top: -20px;
  left: 30px;
  font-size: 120px;
  color: var(--secondary-color);
  opacity: 0.2;
  font-family: Georgia, serif;
  line-height: 1;
}

.testimonial-card:hover {
  border-color: var(--secondary-color);
  box-shadow: var(--shadow-steel);
}

.testimonial-text {
  font-size: 1.125rem;
  font-style: italic;
  margin-bottom: 1.5rem;
  position: relative;
  z-index: 1;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.testimonial-avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  border: 3px solid var(--secondary-color);
  object-fit: cover;
}

.testimonial-name {
  font-weight: 700;
  color: var(--light-text);
  margin-bottom: 0.25rem;
}

.testimonial-role {
  color: var(--secondary-color);
  font-size: 0.9375rem;
}

/* === CONTACT FORM === */
.contact-info {
  background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
  padding: 3rem;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.contact-info h3 {
  color: var(--light-text);
  margin-bottom: 2rem;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 2rem;
  color: rgba(255, 255, 255, 0.95);
}

.contact-icon {
  width: 50px;
  height: 50px;
  background-color: rgba(255, 255, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.contact-details h4 {
  color: var(--light-text);
  font-size: 1.125rem;
  margin-bottom: 0.25rem;
}

.contact-details p {
  color: rgba(255, 255, 255, 0.9);
  margin: 0;
}

.form-error {
  color: #ff4444;
  font-size: 0.875rem;
  margin-top: 0.25rem;
  display: none;
}

.form-error.active {
  display: block;
}

.form-control.error {
  border-color: #ff4444;
}

.form-control.success {
  border-color: #4caf50;
}

/* === FOOTER === */
.footer {
  background-color: var(--dark-bg);
  border-top: 1px solid var(--border-color);
  padding: 4rem 0 2rem;
}

.footer-section {
  margin-bottom: 2rem;
}

.footer-title {
  color: var(--light-text);
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
  position: relative;
  display: inline-block;
}

.footer-title::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 40px;
  height: 2px;
  background-color: var(--secondary-color);
}

.footer-links {
  list-style: none;
  padding: 0;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: var(--gray-text);
  transition: var(--transition-fast);
}

.footer-links a:hover {
  color: var(--secondary-color);
  padding-left: 5px;
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-link {
  width: 45px;
  height: 45px;
  background-color: rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--light-text);
  transition: var(--transition-smooth);
  border: 1px solid var(--border-color);
}

.social-link:hover {
  background-color: var(--secondary-color);
  border-color: var(--secondary-color);
  color: var(--light-text);
  transform: translateY(-3px);
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 2rem;
  margin-top: 3rem;
  text-align: center;
  color: var(--gray-text);
}

/* === SCROLL TO TOP BUTTON === */
.scroll-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background-color: var(--secondary-color);
  color: var(--light-text);
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-smooth);
  z-index: 1000;
  box-shadow: var(--shadow-steel);
}

.scroll-to-top.active {
  opacity: 1;
  visibility: visible;
}

.scroll-to-top:hover {
  background-color: var(--accent-color);
  transform: translateY(-3px);
}

/* === ANIMATIONS === */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.animated {
  opacity: 1;
  transform: translateY(0);
}

/* === LOADING SPINNER === */
.loading-spinner {
  width: 40px;
  height: 40px;
  border: 4px solid rgba(255, 107, 53, 0.2);
  border-top-color: var(--secondary-color);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* === RESPONSIVE DESIGN === */
@media (max-width: 991.98px) {
  .navbar-collapse {
    background-color: var(--dark-bg);
    padding: 1.5rem;
    margin-top: 1rem;
    border: 1px solid var(--border-color);
  }
  
  .navbar-nav .nav-link::after {
    display: none;
  }
  
  .navbar-nav .nav-link {
    padding: 0.75rem 0;
  }
  
  .hero-section {
    min-height: 80vh;
  }
  
  section {
    padding: 3rem 0;
  }
  
  .section-title {
    margin-bottom: 2.5rem;
  }
  
  .project-card {
    height: 300px;
    margin-bottom: 1.5rem;
  }
  
  .project-card-overlay {
    opacity: 1;
    transform: translateY(0);
  }
  
  .contact-info {
    margin-bottom: 2rem;
  }
}

@media (max-width: 767.98px) {
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.75rem;
  }
  
  .btn {
    padding: 0.75rem 1.5rem;
    font-size: 0.875rem;
  }
  
  .service-item,
  .testimonial-card {
    padding: 1.5rem;
  }
  
  .stat-number {
    font-size: 2.5rem;
  }
  
  .scroll-to-top {
    bottom: 20px;
    right: 20px;
    width: 45px;
    height: 45px;
  }
}

@media (max-width: 575.98px) {
  .hero-section {
    padding: 2rem 0;
  }
  
  .hero-subtitle {
    font-size: 1rem;
  }
  
  section {
    padding: 2rem 0;
  }
  
  .btn {
    width: 100%;
    margin-bottom: 1rem;
  }
  
  .contact-info {
    padding: 2rem;
  }
  
  .footer {
    padding: 2rem 0 1rem;
  }
}

/* === PRINT STYLES === */
@media print {
  .navbar,
  .scroll-to-top,
  .footer {
    display: none;
  }
  
  body {
    background-color: white;
    color: black;
  }
}