/* ========================================
   RRRC GBR Ocean Modelling System
   Modern Stylesheet
   ======================================== */

/* CSS Variables */
:root {
  --primary-color: #045442;
  --primary-light: #067a5e;
  --primary-dark: #033a2e;
  --accent-color: #1976d2;
  --accent-gold: #d4af37;
  --text-dark: #2d3436;
  --text-muted: #636e72;
  --bg-light: #f8f9fa;
  --bg-white: #ffffff;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.15);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --transition: all 0.3s ease;
}

/* Base Styles */
html, body {
  min-height: 100vh;
  margin: 0;
  padding: 0;
  background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ec 100%);
  background-attachment: fixed;
  display: flex;
  flex-direction: column;
  font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, Oxygen, Ubuntu, sans-serif;
  color: var(--text-dark);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-dark);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

h1 {
  font-size: 2.2rem;
  letter-spacing: -0.5px;
}

h2 {
  font-size: 1.8rem;
}

h5 {
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Header / Jumbotron */
.jumbotron {
  background: linear-gradient(135deg, var(--bg-white) 0%, var(--bg-light) 100%);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  margin-bottom: 0;
  padding: 15px 0;
}

.logo {
  max-height: 75px;
  transition: var(--transition);
}

.logo:hover {
  transform: scale(1.05);
}

/* Navigation */
.navbar {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
  box-shadow: var(--shadow-md);
  padding: 0;
  position: sticky;
  top: 0;
  z-index: 1000;
}

.navbar-brand {
  color: rgba(255, 255, 255, 0.9) !important;
  font-weight: 600;
  font-size: 1.1rem;
}

.navbar .navbar-nav .nav-item .nav-link {
  display: inline-block;
  padding: 12px 24px;
  margin: 8px 4px;
  color: rgba(255, 255, 255, 0.9);
  font-weight: 500;
  font-size: 0.95rem;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  text-decoration: none;
}

.navbar .navbar-nav .nav-item .nav-link:hover,
.navbar .navbar-nav .nav-item .nav-link:focus {
  background: rgba(255, 255, 255, 0.15);
  color: #ffffff;
  transform: translateY(-2px);
}

.navbar .navbar-nav .nav-item .nav-link.active {
  background: rgba(255, 255, 255, 0.2);
  color: #ffffff;
}

.navbar-toggler {
  border: 2px solid rgba(255, 255, 255, 0.3);
  padding: 8px 12px;
}

.navbar-toggler-icon {
  background-image: url("data:image/svg+xml;charset=utf8,%3Csvg viewBox='0 0 30 30' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath stroke='rgba(255,255,255,0.9)' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E");
}

/* Main Content Container */
.container.mt-3,
.container.flex-grow-1 {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}

.container.mt-3 {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 25px;
  margin-top: 25px !important;
  margin-bottom: 25px;
}

/* Buttons */
.btn-primary {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
  border: none;
  padding: 10px 24px;
  border-radius: var(--radius-sm);
  font-weight: 500;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover,
.btn-primary:focus {
  background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary-color) 100%);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-primary:active {
  transform: translateY(0);
}

/* Date/Time Selection Boxes */
.custom-dropdown {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  padding: 10px;
  margin-bottom: 15px;
  gap: 8px;
}

.date-box,
.time-box {
  padding: 12px 20px;
  border: 2px solid var(--accent-gold);
  border-radius: var(--radius-sm);
  background: var(--bg-white);
  cursor: pointer;
  transition: var(--transition);
  font-weight: 500;
  color: var(--text-dark);
}

.date-box:hover,
.time-box:hover {
  background: linear-gradient(135deg, var(--accent-gold) 0%, #e6c555 100%);
  color: var(--bg-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.date-box.selected,
.time-box.selected {
  background: linear-gradient(135deg, var(--accent-gold) 0%, #c9a030 100%);
  color: var(--bg-white);
  box-shadow: var(--shadow-sm);
}

/* Input Group (Animation Controls) */
.input-group {
  display: flex;
  justify-content: center;
  gap: 10px;
}

.input-group .btn-primary {
  margin: 0;
}

#prevTime, #nextTime {
  padding: 10px 20px;
  font-size: 1.1rem;
}

/* Labels */
.timeLabel,
.dateLabel {
  display: flex;
  justify-content: center;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 10px;
  font-size: 1rem;
}

/* Map Controls */
.fakeimg {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.fakeimg img {
  border-radius: var(--radius-md);
  transition: var(--transition);
}

#regionDropdownContainer,
#mapOptionsContainer {
  position: absolute;
  z-index: 100;
}

#regionDropdownContainer {
  right: 15px;
  bottom: 90px;
}

#mapOptionsContainer {
  right: 15px;
  bottom: 25px;
}

#regionDropdownContainer .btn,
#mapOptionsContainer .btn {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
  border: 3px solid var(--bg-white);
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 0;
}

#regionDropdownContainer .btn:hover,
#mapOptionsContainer .btn:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-lg);
}

#regionDropdownContainer .fas,
#mapOptionsContainer .fas,
#mapOptionsDropdown i {
  font-size: 18px;
  color: var(--bg-white);
}

.dropdown-menu {
  border: none;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  padding: 8px 0;
}

.dropdown-item {
  padding: 10px 20px;
  transition: var(--transition);
  font-weight: 500;
}

.dropdown-item:hover {
  background: linear-gradient(135deg, var(--bg-light) 0%, #e8f5e9 100%);
  color: var(--primary-color);
}

/* Footer */
.footer {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
  color: var(--bg-white);
  margin-top: auto;
  padding: 30px 0 20px 0;
}

.footer h5 {
  color: var(--accent-gold);
  font-size: 0.9rem;
  margin-bottom: 15px;
  font-weight: 600;
}

.footer p,
.footer a {
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.9rem;
  line-height: 1.6;
}

.footer a {
  transition: var(--transition);
  text-decoration: none;
}

.footer a:hover {
  color: var(--accent-gold);
  text-decoration: none;
}

.footer .list-unstyled li {
  margin-bottom: 8px;
}

/* Videos */
video {
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  max-width: 100%;
}

/* ========================================
   Responsive Styles
   ======================================== */

@media (max-width: 991px) {
  .navbar-nav {
    padding: 10px 0;
  }

  .navbar .navbar-nav .nav-item .nav-link {
    padding: 10px 15px;
    margin: 4px 8px;
  }
}

@media (max-width: 768px) {
  h1 {
    font-size: 1.5rem;
  }

  h2 {
    font-size: 1.2rem;
  }

  .logo {
    max-height: 50px;
  }

  .jumbotron {
    padding: 10px 0;
  }

  .jumbotron h1 {
    font-size: 1.4rem;
  }

  .container.mt-3 {
    margin: 15px 10px !important;
    padding: 15px;
    border-radius: var(--radius-md);
  }

  .footer {
    padding: 20px 15px 15px 15px;
  }

  .footer h5 {
    font-size: 0.8rem;
  }

  .footer p,
  .footer a {
    font-size: 0.75rem;
  }

  .navbar-brand {
    font-size: 1rem;
  }

  .date-box,
  .time-box {
    padding: 8px 14px;
    font-size: 0.85rem;
  }

  .btn-primary {
    padding: 8px 16px;
    font-size: 0.85rem;
  }

  #regionDropdownContainer {
    bottom: 60px !important;
    right: 10px;
  }

  #mapOptionsContainer {
    right: 10px;
    bottom: 10px;
  }

  #regionDropdownContainer .btn,
  #mapOptionsContainer .btn {
    width: 40px !important;
    height: 40px !important;
    opacity: 0.9;
  }

  #regionDropdownContainer .fas,
  #mapOptionsContainer .fas {
    font-size: 14px;
  }

  .dropdown-item {
    padding: 8px 16px;
    font-size: 0.85rem;
  }
}

@media (min-width: 769px) {
  .navbar-nav {
    flex-direction: row;
    width: 100%;
    justify-content: center;
  }

  .navbar-nav .nav-item {
    flex: 0 1 auto;
    text-align: center;
  }

  .navbar-brand {
    display: none;
  }
}

@media (min-width: 992px) {
  .navbar .navbar-nav .nav-item .nav-link {
    padding: 12px 28px;
  }
}