/**
 * Header & Navigation - Premium Design (Obsidian & Champagne)
 * ===========================================================
 * Uses design tokens from design-tokens.css
 */

/* ==================== HEADER BASE ==================== */

header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);

  /* Ultra-Premium Glassmorphism */
  background: rgba(15, 23, 42, 0.7);
  /* Deep dark base */
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--glass-border);

  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-6);
  /* Reduced padding to move items closer to edges */

  z-index: var(--z-fixed);
  transition: all var(--transition-normal);

  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

/* Scroll State (can be added via JS if needed, but base style is strong) */
header.scrolled {
  background: rgba(15, 23, 42, 0.9);
  backdrop-filter: var(--glass-blur-strong);
  box-shadow: var(--shadow-premium);
}

/* ==================== LOGO ==================== */

.logo {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.logo h1 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-black);
  margin: 0;
  line-height: 1;
  letter-spacing: -0.02em;
  color: #fff;
  -webkit-text-fill-color: #fff;
  text-shadow: none;
}

.logo p {
  font-size: 0.75rem;
  color: var(--color-text-tertiary);
  margin: 4px 0 0 0;
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* ==================== NAVIGATION ==================== */

.main-menu ul {
  display: flex;
  list-style: none;
  gap: var(--space-4);
  margin: 0;
  padding: 0;
}

.main-menu a {
  position: relative;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  text-decoration: none;
  padding: var(--space-2) 0;
  transition: color var(--transition-fast);
  letter-spacing: 0.02em;
}

.main-menu a:hover {
  color: var(--color-primary);
}

/* Animated Underline */
.main-menu a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: #111827;
  transition: width var(--transition-normal);
}

.main-menu a:hover::after,
.main-menu a.active::after {
  width: 100%;
}

/* ==================== PROFILE AVATAR ==================== */

.profile {
  position: relative;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  padding: 2px;
  margin-left: 5rem;
  background: rgba(55, 65, 81, 0.5);
  box-shadow: none;
  cursor: pointer;
  transition: transform var(--transition-normal);
}

.profile img {
  width: 100%;
  height: 100%;
  border-radius: var(--radius-full);
  object-fit: cover;
  border: 2px solid var(--color-bg-primary);
  /* Blend with bg */
}

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

/* ==================== HAMBURGER (Mobile) ==================== */

.hamburger {
  display: none;
  background: var(--glass-bg);
  /* Added background */
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);

  cursor: pointer;
  padding: var(--space-2);
  margin-left: auto;
  /* Ensure it pushes to the right if needed */
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.hamburger:hover {
  background: var(--glass-bg-hover);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow-primary);
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text-primary);
  margin-bottom: 6px;
  border-radius: 2px;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.hamburger span:last-child {
  margin-bottom: 0;
}

/* ==================== RESPONSIVE ==================== */

@media (max-width: 900px) {
  /* --- Logo Mobile Fix --- */
  .logo {
    flex: 1;
    min-width: 0;
    margin-right: var(--space-2);
    overflow: hidden;
  }

  .logo h1 {
    font-size: 1.15rem !important;
    white-space: normal !important; /* Allow wrapping if absolutely needed, prevents cutoff */
    line-height: 1.2;
    margin-bottom: 2px;
  }

  .logo p {
    display: none !important;
  }

  header {
    height: 70px;
    padding: 0 var(--space-4);
  }

  .hamburger {
    display: block;
    z-index: calc(var(--z-fixed) + 10);
  }

  /* Premium Mobile Menu Container */
  .main-menu {
    /* Premium Mobile Menu Container */
    position: fixed;
    top: 70px;
    right: 0;
    bottom: 0;
    height: calc(100dvh - 70px);
    /* Force full dynamic viewport height minus header */
    width: 85%;
    max-width: 360px;

    /* Premium Background: Obsidian Base + Gold/Blue Mesh + Subtle Texture */
    background-color: #ffffff;
    background-image:
      radial-gradient(circle at 100% 0%, rgba(17, 24, 39, 0.15) 0%, transparent 40%),
      radial-gradient(circle at 0% 100%, rgba(55, 65, 81, 0.1) 0%, transparent 40%),
      linear-gradient(135deg, rgba(15, 23, 42, 0.95), rgba(10, 15, 30, 0.98)),
      url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%235b8def' fill-opacity='0.03' fill-rule='evenodd'%3E%3Cpath d='M0 40L40 0H20L0 20M40 40V20L20 40'/%3E%3C/g%3E%3C/svg%3E");

    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);

    padding: var(--space-8);
    /* Reduced top padding since it is below header now */

    transform: translateX(100%);
    visibility: hidden;
    opacity: 0;
    transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.5s, opacity 0.5s;
    /* Elegant ease */

    overflow-y: auto;
    /* Enable scrolling */
    max-width: 360px;
    /* Increased width */

    box-shadow: -20px 0 50px rgba(0, 0, 0, 0.7);
    border: 1px solid rgba(55, 65, 81, 0.3);
    /* Full Surround Border */

    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    /* Start from top */
    z-index: 1000;
  }

  .main-menu.active {
    transform: translateX(0);
    visibility: visible;
    opacity: 1;
  }

  .main-menu ul {
    flex-direction: column;
    gap: var(--space-4);
    width: 100%;
  }

  /* Menu Items */
  .main-menu a {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text-secondary);

    display: flex;
    align-items: center;
    justify-content: space-between;

    padding: var(--space-5) var(--space-6);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.02);
    border-radius: var(--radius-xl);

    opacity: 0;
    transform: translateX(20px);
    transition: all 0.3s ease;
  }

  /* Staggered Animation for Items */
  .main-menu.active a {
    opacity: 1;
    transform: translateX(0);
  }

  /* Delays for cascading effect */
  .main-menu.active li:nth-child(1) a {
    transition-delay: 0.1s;
  }

  .main-menu.active li:nth-child(2) a {
    transition-delay: 0.15s;
  }

  .main-menu.active li:nth-child(3) a {
    transition-delay: 0.2s;
  }

  .main-menu.active li:nth-child(4) a {
    transition-delay: 0.25s;
  }

  .main-menu.active li:nth-child(5) a {
    transition-delay: 0.3s;
  }

  .main-menu.active li:nth-child(6) a {
    transition-delay: 0.35s;
  }

  .main-menu.active li:nth-child(7) a {
    transition-delay: 0.4s;
  }

  .main-menu.active li:nth-child(8) a {
    transition-delay: 0.45s;
  }

  /* Hover State */
  .main-menu a:hover,
  .main-menu a:active {
    background: linear-gradient(90deg, rgba(55, 65, 81, 0.1), transparent);
    border-color: rgba(55, 65, 81, 0.3);
    color: var(--color-primary);
    transform: translateX(10px);
    box-shadow: none;
  }

  /* Remove the underline effect on mobile */
  .main-menu a::after {
    display: none;
  }

  /* Add arrow indicator */
  .main-menu a::before {
    content: '→';
    font-size: 1rem;
    opacity: 0;
    transform: translateX(-10px);
    transition: all 0.3s ease;
    color: var(--color-primary);
    order: 2;
    /* Put it on the right */
  }

  .main-menu a:hover::before {
    opacity: 1;
    transform: translateX(0);
  }

  .profile {
    display: none;
  }
}

/* Spacer fix for profile photo */
header .profile {
    margin-left: 3rem !important;
}
header .main-menu {
    margin-right: 1.5rem !important;
}

/* ==================== SMALL PHONES ==================== */
@media (max-width: 480px) {
  .logo h1 {
    font-size: 1.05rem;
  }
}

@media (max-width: 360px) {
  .logo h1 {
    font-size: 0.95rem;
  }

  header {
    padding: 0 var(--space-2) !important;
  }
}