/* Architectural Studio - Storm Blue Theme CSS */

/* CSS Custom Properties */
:root {
  --primary-color: #2C3E50;
  --secondary-color: #3498DB;
  --accent-color: #5DADE2;
  --light-blue: #AED6F1;
  --dark-blue: #1B2631;
  --white: #FFFFFF;
  --light-gray: #F8F9FA;
  --medium-gray: #6C757D;
  --dark-gray: #343A40;
  --success-color: #27AE60;
  --warning-color: #F39C12;
  --danger-color: #E74C3C;
  
  --font-primary: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  --font-heading: 'Poppins', 'Arial', sans-serif;
  
  --shadow-sm: 0 2px 4px rgba(44, 62, 80, 0.1);
  --shadow-md: 0 4px 8px rgba(44, 62, 80, 0.15);
  --shadow-lg: 0 8px 24px rgba(44, 62, 80, 0.2);
  
  --border-radius: 8px;
  --border-radius-sm: 4px;
  --border-radius-lg: 16px;
  
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

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

body {
  font-family: var(--font-primary);
  line-height: 1.6;
  color: var(--primary-color);
  background-color: var(--white);
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
  margin-bottom: 1rem;
  color: var(--medium-gray);
}

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

a:hover, a:focus {
  color: var(--primary-color);
  text-decoration: none;
}

/* Bootstrap 5 Overrides */
.btn {
  border-radius: var(--border-radius);
  font-weight: 500;
  padding: 0.75rem 1.5rem;
  transition: all var(--transition-normal);
  border: 2px solid transparent;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-size: 0.875rem;
}

.btn-primary {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
  color: var(--white);
}

.btn-primary:hover, .btn-primary:focus {
  background-color: var(--dark-blue);
  border-color: var(--dark-blue);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

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

.btn-secondary {
  background-color: var(--secondary-color);
  border-color: var(--secondary-color);
  color: var(--white);
}

.btn-secondary:hover, .btn-secondary:focus {
  background-color: var(--accent-color);
  border-color: var(--accent-color);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Navigation */
.navbar {
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  padding: 1rem 0;
}

.navbar.scrolled {
  background-color: rgba(255, 255, 255, 0.98);
  padding: 0.5rem 0;
  box-shadow: var(--shadow-md);
}

.navbar-brand {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--primary-color);
}

.navbar-nav .nav-link {
  color: var(--primary-color);
  font-weight: 500;
  margin: 0 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-fast);
}

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

.navbar-toggler {
  border: none;
  padding: 0.25rem 0.5rem;
}

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

.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%232C3E50' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='m4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* Hero Section */
.hero {
  min-height: 100vh;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%23ffffff" stroke-width="0.5" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>') repeat;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero h1 {
  color: var(--white);
  font-size: 3.5rem;
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeInUp 1s ease forwards 0.5s;
}

.hero p {
  color: var(--light-blue);
  font-size: 1.25rem;
  margin-bottom: 2rem;
  opacity: 0;
  animation: fadeInUp 1s ease forwards 0.8s;
}

.hero .btn {
  opacity: 0;
  animation: fadeInUp 1s ease forwards 1.1s;
}

/* Card Styles */
.card {
  border: none;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  overflow: hidden;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.card-img-top {
  transition: transform var(--transition-slow);
}

.card:hover .card-img-top {
  transform: scale(1.05);
}

.card-body {
  padding: 2rem;
}

.card-title {
  color: var(--primary-color);
  margin-bottom: 1rem;
}

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

/* Section Styles */
.section {
  padding: 5rem 0;
}

.section-title {
  text-align: center;
  margin-bottom: 3rem;
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--secondary-color), var(--accent-color));
  margin: 1rem auto;
  border-radius: 2px;
}

/* Portfolio Grid */
.portfolio-item {
  position: relative;
  overflow: hidden;
  border-radius: var(--border-radius-lg);
  margin-bottom: 2rem;
}

.portfolio-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(44, 62, 80, 0.9), rgba(52, 152, 219, 0.9));
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.portfolio-item:hover .portfolio-overlay {
  opacity: 1;
}

.portfolio-content {
  text-align: center;
  color: var(--white);
  transform: translateY(20px);
  transition: transform var(--transition-normal);
}

.portfolio-item:hover .portfolio-content {
  transform: translateY(0);
}

/* Form Styles */
.form-control {
  border: 2px solid #E9ECEF;
  border-radius: var(--border-radius);
  padding: 0.75rem 1rem;
  font-size: 1rem;
  transition: all var(--transition-fast);
}

.form-control:focus {
  border-color: var(--secondary-color);
  box-shadow: 0 0 0 0.2rem rgba(52, 152, 219, 0.25);
}

.form-control.is-invalid {
  border-color: var(--danger-color);
}

.form-control.is-valid {
  border-color: var(--success-color);
}

.invalid-feedback {
  display: block;
  color: var(--danger-color);
  font-size: 0.875rem;
  margin-top: 0.25rem;
}

.valid-feedback {
  display: block;
  color: var(--success-color);
  font-size: 0.875rem;
  margin-top: 0.25rem;
}

/* Footer */
.footer {
  background-color: var(--primary-color);
  color: var(--light-blue);
  padding: 3rem 0 1rem;
}

.footer h5 {
  color: var(--white);
  margin-bottom: 1.5rem;
}

.footer a {
  color: var(--light-blue);
  transition: color var(--transition-fast);
}

.footer a:hover {
  color: var(--white);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: 2rem;
  padding-top: 2rem;
  text-align: center;
}

/* Loading Animation */
.loading {
  position: relative;
  overflow: hidden;
}

.loading::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  animation: loading 1.5s infinite;
}

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

@keyframes loading {
  0% { left: -100%; }
  100% { left: 100%; }
}

.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Utility Classes */
.bg-primary-gradient {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

.text-primary { color: var(--primary-color); }
.text-secondary { color: var(--secondary-color); }
.bg-light-blue { background-color: var(--light-blue); }

/* Mobile Responsive */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.5rem;
  }
  
  .hero p {
    font-size: 1.1rem;
  }
  
  .section {
    padding: 3rem 0;
  }
  
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  h3 { font-size: 1.5rem; }
  
  .btn {
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
  }
  
  .card-body {
    padding: 1.5rem;
  }
}

@media (max-width: 576px) {
  .hero {
    min-height: 80vh;
    text-align: center;
  }
  
  .hero h1 {
    font-size: 2rem;
  }
  
  .navbar-nav {
    background-color: var(--white);
    border-radius: var(--border-radius);
    padding: 1rem;
    margin-top: 1rem;
    box-shadow: var(--shadow-md);
  }
  
  .section {
    padding: 2rem 0;
  }
}