/* Arctic Frost Architecture Studio - CSS */

/* ===== CSS Variables & Base Styles ===== */
:root {
  --primary-color: #2E3440;
  --secondary-color: #88C0D0;
  --arctic-white: #ECEFF4;
  --frost-blue: #5E81AC;
  --ice-white: #D8DEE9;
  --snow-white: #E5E9F0;
  --polar-blue: #81A1C1;
  --glacier-teal: #8FBCBB;
  --transition-smooth: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-frost: 0 10px 40px rgba(136, 192, 208, 0.15);
  --shadow-deep: 0 20px 60px rgba(46, 52, 64, 0.2);
}

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

body {
  font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: var(--primary-color) !important;
  background-color: var(--arctic-white) !important;
  line-height: 1.7;
  overflow-x: hidden;
}

/* ===== Typography ===== */
.display-1, .display-2, .display-3, .display-4, .display-5, .display-6 {
  font-weight: 700 !important;
  letter-spacing: -0.02em;
  color: var(--primary-color) !important;
}

.lead {
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--primary-color) !important;
  opacity: 0.9;
}

h1, h2, h3, h4, h5, h6, .h1, .h2, .h3, .h4, .h5, .h6 {
  color: var(--primary-color) !important;
  font-weight: 600;
}

/* ===== Navigation ===== */
.navbar {
  padding: 1.2rem 0 !important;
  background: linear-gradient(135deg, var(--primary-color) 0%, #3B4252 100%) !important;
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 20px rgba(46, 52, 64, 0.1);
  transition: var(--transition-smooth);
}

.navbar.scrolled {
  padding: 0.8rem 0 !important;
  box-shadow: 0 4px 30px rgba(46, 52, 64, 0.15);
}

.navbar-dark {
  background-color: var(--primary-color) !important;
}

.navbar-brand {
  font-size: 1.5rem !important;
  color: #FFFFFF !important;
  font-weight: 700 !important;
  letter-spacing: 0.5px;
  transition: var(--transition-smooth);
}

.navbar-brand:hover {
  color: var(--secondary-color) !important;
  transform: translateY(-2px);
}

.navbar-nav .nav-link {
  color: rgba(255, 255, 255, 0.9) !important;
  font-weight: 500 !important;
  padding: 0.5rem 1.2rem !important;
  margin: 0 0.2rem;
  position: relative;
  transition: var(--transition-smooth);
  border-radius: 8px;
}

.navbar-nav .nav-link::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--secondary-color);
  transform: translateX(-50%);
  transition: width 0.3s ease;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
  color: var(--secondary-color) !important;
  background-color: rgba(136, 192, 208, 0.1) !important;
}

.navbar-nav .nav-link:hover::before,
.navbar-nav .nav-link.active::before {
  width: 60%;
}

.navbar-toggler {
  border-color: var(--secondary-color) !important;
  padding: 0.5rem 0.75rem;
}

.navbar-toggler:focus {
  box-shadow: 0 0 0 0.25rem rgba(136, 192, 208, 0.25) !important;
}

.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='%2388C0D0' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e") !important;
}

/* ===== Buttons ===== */
.btn {
  font-weight: 600 !important;
  border-radius: 12px !important;
  transition: var(--transition-smooth) !important;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border: 2px solid transparent !important;
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
  z-index: -1;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn-primary {
  background-color: var(--secondary-color) !important;
  border-color: var(--secondary-color) !important;
  color: #FFFFFF !important;
  box-shadow: 0 4px 15px rgba(136, 192, 208, 0.3);
}

.btn-primary:hover,
.btn-primary:focus {
  background-color: var(--frost-blue) !important;
  border-color: var(--frost-blue) !important;
  color: #FFFFFF !important;
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(94, 129, 172, 0.4) !important;
}

.btn-outline-light {
  border-color: #FFFFFF !important;
  color: #FFFFFF !important;
  background-color: transparent !important;
}

.btn-outline-light:hover,
.btn-outline-light:focus {
  background-color: #FFFFFF !important;
  border-color: #FFFFFF !important;
  color: var(--primary-color) !important;
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(255, 255, 255, 0.3) !important;
}

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

.btn-outline-primary:hover,
.btn-outline-primary:focus {
  background-color: var(--secondary-color) !important;
  border-color: var(--secondary-color) !important;
  color: #FFFFFF !important;
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(136, 192, 208, 0.4) !important;
}

.btn-lg {
  padding: 1rem 2.5rem !important;
  font-size: 1.1rem !important;
}

.btn-sm {
  padding: 0.5rem 1.5rem !important;
  font-size: 0.875rem !important;
}

/* ===== Hero Section ===== */
.hero {
  min-height: 100vh;
  background: linear-gradient(135deg, #2E3440 0%, #3B4252 50%, #434C5E 100%);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  padding: 100px 0 50px;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 50%, rgba(136, 192, 208, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(129, 161, 193, 0.1) 0%, transparent 50%),
    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='%2388C0D0' fill-opacity='0.05'%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");
  animation: snowfall 20s linear infinite;
}

@keyframes snowfall {
  0% { transform: translateY(0); }
  100% { transform: translateY(60px); }
}

.hero .display-1 {
  color: #FFFFFF !important;
  font-size: clamp(2.5rem, 8vw, 5rem) !important;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  animation: fadeInUp 1s ease-out;
}

.hero .lead {
  color: var(--ice-white) !important;
  font-size: clamp(1rem, 2vw, 1.5rem) !important;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
  animation: fadeInUp 1.2s ease-out;
}

.hero .fs-5 {
  color: var(--snow-white) !important;
  animation: fadeInUp 1.4s ease-out;
}

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

/* ===== Background Utilities ===== */
.bg-light {
  background-color: var(--arctic-white) !important;
}

.bg-white {
  background-color: #FFFFFF !important;
}

.text-white {
  color: #FFFFFF !important;
}

/* ===== Cards & Project Items ===== */
.card {
  border: none !important;
  border-radius: 16px !important;
  overflow: hidden;
  transition: var(--transition-smooth) !important;
  background-color: #FFFFFF !important;
}

.card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-deep) !important;
}

.card-body {
  padding: 2rem !important;
}

.shadow {
  box-shadow: 0 5px 20px rgba(46, 52, 64, 0.1) !important;
}

.shadow-sm {
  box-shadow: 0 2px 10px rgba(46, 52, 64, 0.08) !important;
}

.shadow-lg {
  box-shadow: var(--shadow-frost) !important;
}

/* ===== Project Cards ===== */
.project-card {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition-smooth);
  background-color: #FFFFFF;
  height: 350px;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(to bottom, transparent 0%, rgba(46, 52, 64, 0.8) 100%);
  z-index: 1;
  transition: var(--transition-smooth);
}

.project-card:hover::before {
  background: linear-gradient(to bottom, rgba(46, 52, 64, 0.4) 0%, rgba(46, 52, 64, 0.95) 100%);
}

.project-card:hover {
  transform: scale(1.03);
  box-shadow: var(--shadow-deep) !important;
}

.project-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 2rem;
  z-index: 2;
  transform: translateY(10px);
  transition: var(--transition-smooth);
}

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

.project-overlay h4,
.project-overlay .h4 {
  color: #FFFFFF !important;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.project-overlay p {
  color: var(--ice-white) !important;
  margin-bottom: 0;
}

.featured-project {
  height: 450px;
  box-shadow: var(--shadow-deep) !important;
}

.project-item {
  transition: var(--transition-smooth);
  border-radius: 12px;
  overflow: hidden;
}

.project-item:hover {
  transform: translateY(-5px);
}

/* ===== Filter Buttons ===== */
.filter-btn {
  background-color: transparent !important;
  color: var(--primary-color) !important;
  border: 2px solid var(--ice-white) !important;
  border-radius: 50px !important;
  padding: 0.6rem 1.8rem !important;
  margin: 0.3rem;
  font-weight: 600 !important;
  transition: var(--transition-smooth) !important;
}

.filter-btn:hover,
.filter-btn.active {
  background-color: var(--secondary-color) !important;
  color: #FFFFFF !important;
  border-color: var(--secondary-color) !important;
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(136, 192, 208, 0.3) !important;
}

/* ===== Badges ===== */
.badge {
  padding: 0.5rem 1rem !important;
  font-weight: 600 !important;
  border-radius: 8px !important;
  background-color: var(--secondary-color) !important;
  color: #FFFFFF !important;
}

/* ===== Images ===== */
.img-fluid {
  border-radius: 12px;
  transition: var(--transition-smooth);
}

.img-fluid:hover {
  transform: scale(1.02);
}

.overflow-hidden {
  border-radius: 16px;
}

.rounded {
  border-radius: 12px !important;
}

.rounded-circle {
  border-radius: 50% !important;
}

/* ===== Bootstrap Icons ===== */
.bi {
  vertical-align: middle;
  display: inline-block;
  line-height: 1;
}

.bi-snow2, .bi-house-door, .bi-lightning-charge, .bi-tree, 
.bi-snow, .bi-thermometer-half, .bi-geo-alt, .bi-telephone,
.bi-envelope, .bi-thermometer-snow, .bi-recycle, .bi-droplet,
.bi-house-check, .bi-check-circle-fill, .bi-box-seam,
.bi-clock-history, .bi-lightbulb, .bi-geo-alt-fill,
.bi-telephone-fill, .bi-envelope-fill, .bi-building {
  color: var(--secondary-color) !important;
  transition: var(--transition-smooth);
}

.fs-1 { font-size: 3rem !important; }
.fs-3 { font-size: 1.75rem !important; }
.fs-4 { font-size: 1.5rem !important; }
.fs-5 { font-size: 1.25rem !important; }

/* ===== Progress Bars ===== */
.progress {
  height: 12px !important;
  border-radius: 10px !important;
  background-color: var(--ice-white) !important;
  overflow: visible;
}

.progress-bar {
  background-color: var(--secondary-color) !important;
  border-radius: 10px !important;
  position: relative;
  transition: width 1s ease-in-out !important;
}

.progress-bar::after {
  content: '';
  position: absolute;
  top: 50%;
  right: 0;
  width: 20px;
  height: 20px;
  background-color: var(--secondary-color);
  border: 3px solid #FFFFFF;
  border-radius: 50%;
  transform: translate(50%, -50%);
  box-shadow: 0 2px 8px rgba(136, 192, 208, 0.4);
}

/* ===== Forms ===== */
.form-control,
.form-select {
  border: 2px solid var(--ice-white) !important;
  border-radius: 10px !important;
  padding: 0.8rem 1.2rem !important;
  transition: var(--transition-smooth) !important;
  background-color: #FFFFFF !important;
  color: var(--primary-color) !important;
}

.form-control:focus,
.form-select:focus {
  border-color: var(--secondary-color) !important;
  box-shadow: 0 0 0 0.25rem rgba(136, 192, 208, 0.25) !important;
  background-color: #FFFFFF !important;
  color: var(--primary-color) !important;
}

.form-label {
  font-weight: 600 !important;
  color: var(--primary-color) !important;
  margin-bottom: 0.5rem !important;
}

.form-check-input {
  border: 2px solid var(--ice-white) !important;
  border-radius: 6px !important;
  width: 1.5em !important;
  height: 1.5em !important;
}

.form-check-input:checked {
  background-color: var(--secondary-color) !important;
  border-color: var(--secondary-color) !important;
}

.form-check-input:focus {
  box-shadow: 0 0 0 0.25rem rgba(136, 192, 208, 0.25) !important;
}

.form-check-label {
  color: var(--primary-color) !important;
  margin-left: 0.5rem;
}

/* ===== Lists ===== */
.list-unstyled li {
  padding: 0.5rem 0;
  color: var(--primary-color) !important;
  transition: var(--transition-smooth);
}

.list-unstyled li:hover {
  padding-left: 10px;
  color: var(--secondary-color) !important;
}

/* ===== Links ===== */
a {
  color: var(--secondary-color) !important;
  text-decoration: none !important;
  transition: var(--transition-smooth) !important;
}

a:hover {
  color: var(--frost-blue) !important;
  text-decoration: underline !important;
}

.text-decoration-none {
  text-decoration: none !important;
}

.text-decoration-none:hover {
  text-decoration: none !important;
  opacity: 0.8;
}

/* ===== Borders ===== */
.border-0 {
  border: none !important;
}

.border-top {
  border-top: 2px solid var(--ice-white) !important;
}

/* ===== Sticky Elements ===== */
.sticky-lg-top {
  position: sticky;
  top: 100px;
  z-index: 1020;
}

/* ===== Spacing Utilities ===== */
.py-5 { padding-top: 4rem !important; padding-bottom: 4rem !important; }
.my-4 { margin-top: 2rem !important; margin-bottom: 2rem !important; }
.my-5 { margin-top: 4rem !important; margin-bottom: 4rem !important; }
.p-4 { padding: 2rem !important; }
.p-5 { padding: 3rem !important; }
.px-4 { padding-left: 2rem !important; padding-right: 2rem !important; }
.px-5 { padding-left: 3rem !important; padding-right: 3rem !important; }
.py-3 { padding-top: 1.5rem !important; padding-bottom: 1.5rem !important; }
.pt-3 { padding-top: 1.5rem !important; }
.pt-4 { padding-top: 2rem !important; }
.pt-5 { padding-top: 3rem !important; }
.pb-4 { padding-bottom: 2rem !important; }
.mt-2 { margin-top: 0.75rem !important; }
.mt-3 { margin-top: 1.5rem !important; }
.mt-4 { margin-top: 2rem !important; }
.mt-5 { margin-top: 3rem !important; }
.mb-0 { margin-bottom: 0 !important; }
.mb-1 { margin-bottom: 0.5rem !important; }
.mb-2 { margin-bottom: 0.75rem !important; }
.mb-3 { margin-bottom: 1.5rem !important; }
.mb-4 { margin-bottom: 2rem !important; }
.mb-5 { margin-bottom: 3rem !important; }

/* ===== Container ===== */
.container-fluid {
  padding-left: 15px !important;
  padding-right: 15px !important;
}

/* ===== Small Text ===== */
.small {
  font-size: 0.875rem !important;
  color: rgba(46, 52, 64, 0.7) !important;
}

/* ===== Animations ===== */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-20px); }
}

.float-animation {
  animation: float 3s ease-in-out infinite;
}

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

.pulse-animation {
  animation: pulse 2s ease-in-out infinite;
}

/* ===== Scroll Animations ===== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

.slide-in-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.slide-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.slide-in-right {
  opacity: 0;
  transform: translateX(50px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.slide-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* ===== Hover Effects ===== */
.hover-lift {
  transition: var(--transition-smooth);
}

.hover-lift:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-frost) !important;
}

/* ===== Footer ===== */
footer {
  background: linear-gradient(135deg, var(--primary-color) 0%, #3B4252 100%);
  color: var(--ice-white) !important;
  padding: 4rem 0 2rem;
}

footer h5, footer .h5 {
  color: #FFFFFF !important;
  font-weight: 700;
  margin-bottom: 1.5rem;
}

footer p, footer li, footer a {
  color: var(--ice-white) !important;
}

footer a:hover {
  color: var(--secondary-color) !important;
}

/* ===== Responsive Design ===== */
@media (max-width: 991.98px) {
  .navbar-collapse {
    background-color: rgba(46, 52, 64, 0.98);
    padding: 1.5rem;
    border-radius: 12px;
    margin-top: 1rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  }
  
  .navbar-nav .nav-link {
    padding: 0.8rem 1rem !important;
    margin: 0.3rem 0;
  }
  
  .hero {
    min-height: 80vh;
    padding: 80px 0 40px;
  }
  
  .display-1 {
    font-size: 2.5rem !important;
  }
  
  .display-3 {
    font-size: 2rem !important;
  }
  
  .display-4 {
    font-size: 1.8rem !important;
  }
  
  .display-5 {
    font-size: 1.5rem !important;
  }
  
  .py-5 {
    padding-top: 3rem !important;
    padding-bottom: 3rem !important;
  }
  
  .project-card,
  .featured-project {
    height: 300px;
  }
  
  .btn-lg {
    padding: 0.8rem 2rem !important;
    font-size: 1rem !important;
  }
  
  .sticky-lg-top {
    position: relative;
    top: 0;
  }
}

@media (max-width: 767.98px) {
  .hero .display-1 {
    font-size: 2rem !important;
  }
  
  .display-3 {
    font-size: 1.75rem !important;
  }
  
  .display-4 {
    font-size: 1.5rem !important;
  }
  
  .card-body {
    padding: 1.5rem !important;
  }
  
  .p-5 {
    padding: 2rem !important;
  }
  
  .project-card,
  .featured-project {
    height: 250px;
  }
}

@media (max-width: 575.98px) {
  .btn-lg {
    padding: 0.7rem 1.5rem !important;
    font-size: 0.95rem !important;
  }
  
  .gap-3 {
    gap: 0.75rem !important;
  }
  
  .display-1 {
    font-size: 1.75rem !important;
  }
  
  .fs-5 {
    font-size: 1rem !important;
  }
}

/* ===== Print Styles ===== */
@media print {
  .navbar,
  .btn,
  footer {
    display: none;
  }
  
  body {
    background-color: white !important;
  }
}

/* ===== Accessibility ===== */
.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

:focus-visible {
  outline: 3px solid var(--secondary-color) !important;
  outline-offset: 3px !important;
}

/* ===== Selection ===== */
::selection {
  background-color: var(--secondary-color);
  color: #FFFFFF;
}

::-moz-selection {
  background-color: var(--secondary-color);
  color: #FFFFFF;
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
  width: 12px;
}

::-webkit-scrollbar-track {
  background: var(--arctic-white);
}

::-webkit-scrollbar-thumb {
  background: var(--secondary-color);
  border-radius: 6px;
  border: 2px solid var(--arctic-white);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--frost-blue);
}