/* ===================== */
/* 肌 Reset & Base Styles */
/* ===================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  /* Disable user selection for a cleaner presentation */
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}
html {
  scroll-behavior: smooth; /* Smooth scrolling for anchor links */
}
body {
  font-family: 'Inter', sans-serif; /* Consistent modern sans-serif font */
  background-color: #f8f9fa; /* Soft off-white base background */
  color: #343a40; /* Darker text for readability in light mode */
  line-height: 1.6;
  overflow-x: hidden; /* Prevent horizontal scroll */
}

nav a, nav span, nav div {
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  pointer-events: auto; /* still clickable */
  -webkit-user-drag: none;
  user-drag: none;
}


/* Reusable Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem; /* Consistent padding */
}

/* Accessibility Focus */
:focus {
  outline: 3px solid #ffc107 !important; /* Prominent yellow focus outline for accessibility and style */
  outline-offset: 4px;
  border-radius: 4px; /* Ensure rounded focus for inputs */
}

/* Lock Images */
img {
  pointer-events: none; /* Prevent image dragging/interaction */
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  -webkit-user-drag: none;
  user-drag: none;
  max-width: 100%; /* Ensure images are responsive */
  height: auto;
}

/* ===================== */
/* 塙 Navigation Bar */
/* ===================== */
.navbar {
  background: linear-gradient(to right, #1a237e, #4a148c); /* Deep blue to rich purple gradient */
  padding: 1rem 0;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25); /* More pronounced shadow */
  position: fixed;
  width: 100%;
  z-index: 1000; /* Ensure navbar is always on top */
}
.navbar-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 1.5rem;
  position: relative; /* Add this for the absolute menu positioning */
}
.brand-logo {
  font-size: 1.9rem; /* Slightly larger brand name */
  font-weight: 800; /* Bolder brand name */
  color: #fff;
  text-decoration: none;
  letter-spacing: 0.08em; /* Increased letter spacing for classic feel */
  text-shadow: 1px 1px 3px rgba(0,0,0,0.3); /* Subtle text shadow */
}

/* Hamburger button styles - hidden by default */
.hamburger-menu {
  display: none; /* Hide on desktop */
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 1.5rem;
  color: #fff;
  transition: transform 0.3s ease;
  z-index: 1001;
}

.hamburger-menu:focus {
    outline: 3px solid #ffc107 !important;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 2.5rem; /* More spacing between nav items */
  font-size: 1.05rem; /* Slightly larger font size */
}
.nav-link-item {
  color: #e0e0e0; /* Softer white for links */
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease, transform 0.2s ease, text-shadow 0.3s ease;
  display: flex;
  align-items: center;
  gap: 0.6rem; /* Slightly more space for icon */
}
.nav-link-item:hover, .nav-link-item.active {
  color: #ffdb58; /* Brighter yellow on hover and active */
  transform: translateY(-3px); /* More pronounced lift effect */
  text-shadow: 0 0 8px rgba(255, 219, 88, 0.6); /* Glow effect */
}
.nav-auth-button {
  background-color: #ffc107; /* Bright yellow button */
  color: #1a237e !important; /* Deep blue text for contrast */
  padding: 0.7rem 1.4rem; /* Generous padding */
  border-radius: 9999px; /* Pill-shaped button */
  font-weight: 700; /* Bolder text */
  transition: background-color 0.3s ease, transform 0.2s ease, box-shadow 0.3s ease;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  box-shadow: 0 4px 12px rgba(255, 193, 7, 0.4); /* Soft shadow */
}
.nav-auth-button:hover {
  background-color: #ffdb58; /* Lighter yellow on hover */
  transform: translateY(-2px) scale(1.03); /* Subtle lift and scale */
  box-shadow: 0 6px 15px rgba(255, 193, 7, 0.6); /* Enhanced shadow */
}

/* ===================== */
/* ｧｱ Footer */
/* ===================== */
.main-footer {
  background-color: #1e1e2e; /* Deep dark background for footer */
  color: #adb5bd; /* Soft gray text */
  padding: 3rem 0; /* More vertical padding */
  text-align: center;
  box-shadow: inset 0 6px 20px rgba(0, 0, 0, 0.2); /* Inner shadow for depth */
}
.main-footer .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem; /* More spacing */
}
.social-links {
  display: flex;
  justify-content: center;
  gap: 2rem; /* Wider spacing for social icons */
  margin-top: 1rem;
}
.social-icon {
  color: #adb5bd;
  font-size: 1.7rem; /* Larger social icons */
  transition: color 0.3s ease, transform 0.2s ease;
}
.social-icon:hover {
  color: #ffc107; /* Yellow on hover */
  transform: translateY(-5px) scale(1.1); /* Lift and slight scale */
}

footer, footer a, footer span, footer img, footer div {
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  pointer-events: auto; /* still clickable */
  -webkit-user-drag: none;
  user-drag: none;
}

/* ===================== */
/* Custom styles for Contact Page */
/* ===================== */
/* Specific hero styling for this contact page */
.contact-hero {
    position: relative;
    height: 60vh; /* Taller hero section for more impact */
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: #fff;
    padding: 0 1.5rem;
    background-image: url('fire2.jpg'); /* Use your background.png */
    background-size: cover;
    background-position: center;
    background-attachment: fixed; /* Parallax effect */
    box-shadow: 0 10px 30px rgba(0,0,0,0.4); /* Stronger shadow for the hero bottom */
}
.contact-hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7); /* Slightly darker overlay */
    backdrop-filter: blur(3px); /* Subtle blur for depth */
}
.contact-hero-content {
    position: relative;
    z-index: 10;
    animation: fadeInScale 1s ease-out; /* Custom animation for hero content */
}
.contact-hero-title {
    font-size: 4.5rem; /* Larger, more impactful title */
    font-weight: 900; /* Extra bold */
    margin-bottom: 1rem;
    line-height: 1.1;
    text-shadow: 2px 2px 8px rgba(0,0,0,0.5); /* Clearer text shadow */
    letter-spacing: 0.05em; /* Classic touch */
}
.contact-hero-subtitle {
    font-size: 1.8rem; /* Larger subtitle */
    font-weight: 300;
    text-shadow: 1px 1px 4px rgba(0,0,0,0.4);
    max-width: 800px;
    margin: 0 auto;
}
.form-section {
    background-color: #000000;/* Light background for the form section */
    padding: 6rem 1.5rem; /* Increased vertical padding */
    display: flex;
    justify-content: center;
}
.contact-form-container {
    width: 100%;
    max-width: 900px; /* Even wider form container */
    background-color: #0a0e2f;
    border-radius: 1.5rem; /* Consistent rounded corners */
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15), 0 0 0 1px rgba(0,0,0,0.05); /* Deeper, layered shadow */
    padding: 3.5rem 3.5rem; /* More internal padding */
    transform: translateY(-50px); /* Lift form slightly into the hero section */
    position: relative;
    z-index: 100; /* Ensure it overlaps hero if needed */
}
.contact-form-header {
    text-align: center;
    margin-bottom: 3rem; /* More space below header */
}
.contact-form-header h1 {
    font-size: 3.5rem; /* Larger heading */
    font-weight: 800;
    color: #ffd900; /* Deep blue */
    margin-bottom: 0.75rem;
    letter-spacing: 0.03em;
}
.contact-form-header p {
    font-size: 1.25rem; /* Larger paragraph */
    color: #f8fcff;
    max-width: 600px;
    margin: 0.5rem auto 0;
}
.contact-form-group {
    margin-bottom: 1.75rem; /* More spacing between form groups */
}
.contact-form-label {
    display: block;
    font-size: 1.05rem; /* Slightly larger label */
    font-weight: 700; /* Bolder label */
    color: #ffffff;
    margin-bottom: 0.6rem; /* More space below label */
}
.contact-form-input,
.contact-form-textarea,
.contact-form-select {
    width: 100%;
    padding: 1.1rem 1.5rem; /* More padding inside inputs */
    border-radius: 0.75rem; /* Consistent rounded inputs */
    border: 1px solid #c2c9d2; /* Softer border */
    background-color: #fcfdfe; /* Almost white input background */
    color: #343a40;
    font-size: 1.05rem;
    transition: all 0.3s ease;
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.08); /* Subtle inner shadow */
}
.contact-form-input:focus,
.contact-form-textarea:focus,
.contact-form-select:focus {
    border-color: #007bff; /* Primary blue focus border */
    box-shadow: 0 0 0 4px rgba(0, 123, 255, 0.3); /* More prominent focus ring */
    background-color: #fff; /* White background on focus */
}
.contact-form-textarea {
    min-height: 180px; /* Taller textarea */
    resize: vertical;
}
.contact-submit-btn {
    width: 100%;
    padding: 1.2rem 2.8rem; /* Even more padding */
    border-radius: 9999px; /* Fully rounded button */
    background-color: #1a237e; /* Deep blue primary button */
    color: #fff;
    font-size: 1.25rem; /* Larger font */
    font-weight: 800; /* Extra bold */
    text-transform: uppercase;
    letter-spacing: 0.08em; /* Pronounced letter spacing */
    box-shadow: 0 10px 30px rgba(26, 35, 126, 0.3), 0 0 0 2px rgba(255, 193, 7, 0.5); /* Layered shadow and yellow outline */
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    margin-top: 2rem; /* More space above button */
}
.contact-submit-btn:hover {
    background-color: #0d1259; /* Darker blue on hover */
    transform: translateY(-5px) scale(1.02); /* More pronounced lift and scale */
    box-shadow: 0 15px 40px rgba(26, 35, 126, 0.4), 0 0 0 3px rgba(255, 193, 7, 0.7); /* Enhanced shadows */
}
.message {
    margin-top: 1.5rem;
    text-align: center;
    font-size: 1.1rem; /* Slightly larger message font */
    font-weight: 700;
    display: none; /* Hidden by default */
}
.message.success {
    color: #28a745; /* Green for success */
}
.message.error {
    color: #dc3545; /* Red for error */
}

/* ===================== */
/* Dark Mode adjustments for contact page */
/* ===================== */
body.dark-mode {
    background-color: #12121e; /* Even darker body background */
    color: #e9ecef;
}
body.dark-mode .navbar {
    background: linear-gradient(to right, #0a0e2f, #2d0b42); /* Darker navbar gradient */
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
}
body.dark-mode .brand-logo {
    text-shadow: 1px 1px 3px rgba(255, 193, 7, 0.3);
}
body.dark-mode .nav-link-item {
    color: #adb5bd;
}
body.dark-mode .nav-link-item:hover, body.dark-mode .nav-link-item.active {
    color: #ffc107;
    text-shadow: 0 0 8px rgba(255, 193, 7, 0.6);
}
body.dark-mode .nav-auth-button {
    background-color: #ffc107;
    color: #1a237e;
    box-shadow: 0 4px 12px rgba(255, 193, 7, 0.4);
}
body.dark-mode .nav-auth-button:hover {
    background-color: #e0ac02;
    box-shadow: 0 6px 15px rgba(255, 193, 7, 0.6);
}

body.dark-mode .main-footer {
    background-color: #12121e;
    color: #8a8a9a;
    box-shadow: inset 0 6px 20px rgba(0, 0, 0, 0.35);
}
body.dark-mode .social-icon {
    color: #8a8a9a;
}
body.dark-mode .social-icon:hover {
    color: #ffc107;
}

body.dark-mode .contact-hero-overlay {
    background-color: rgba(0, 0, 0, 0.8); /* Even darker overlay in dark mode */
}
body.dark-mode .contact-form-container {
    background-color: #2b3035; /* Darker card for the form */
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(255,255,255,0.05);
}
body.dark-mode .contact-form-header h1 {
    color: #ffc107; /* Yellow heading */
}
body.dark-mode .contact-form-header p {
    color: #adb5bd;
}
body.dark-mode .contact-form-label {
    color: #e9ecef;
}
body.dark-mode .contact-form-input,
body.dark-mode .contact-form-textarea,
body.dark-mode .contact-form-select {
    background-color: #343a40; /* Darker input background */
    border-color: #495057;
    color: #e9ecef;
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.2);
}
body.dark-mode .contact-form-input:focus,
body.dark-mode .contact-form-textarea:focus,
body.dark-mode .contact-form-select:focus {
    background-color: #3a404a; /* Slightly lighter dark on focus */
    border-color: #007bff;
    box-shadow: 0 0 0 4px rgba(0, 123, 255, 0.4);
}
body.dark-mode .contact-submit-btn {
    background-color: #ffc107; /* Yellow button in dark mode */
    color: #1a237e; /* Deep blue text */
    box-shadow: 0 10px 30px rgba(255, 193, 7, 0.3), 0 0 0 2px rgba(26, 35, 126, 0.5);
}
body.dark-mode .contact-submit-btn:hover {
    background-color: #e0ac02;
    box-shadow: 0 15px 40px rgba(255, 193, 7, 0.4), 0 0 0 3px rgba(26, 35, 126, 0.7);
}

/* ===================== */
/* Animations */
/* ===================== */
@keyframes fadeInScale {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}

/* ===================== */
/* 導 Responsive Adjustments */
/* ===================== */
@media (min-width: 768px) { /* Medium screens and up */
    .contact-hero-title {
        font-size: 5.5rem;
    }
    .contact-hero-subtitle {
        font-size: 2rem;
    }
}

@media (max-width: 767px) { /* Small screens (mobile) */
  /* Re-adjust navbar container for mobile */
  .navbar-container {
    flex-direction: row; /* Keep elements in a row */
    justify-content: space-between;
    align-items: center;
    padding: 0 1.5rem;
  }
  
  /* Show the hamburger menu button */
  .hamburger-menu {
      display: block;
  }

  /* Make the navigation links collapsible */
  .nav-links {
    position: absolute;
    top: 100%; /* Position below the navbar */
    left: 0;
    width: 100%;
    max-height: 0; /* Initially hidden */
    overflow: hidden;
    background: linear-gradient(to right, #1a237e, #4a148c);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
    transition: max-height 0.5s ease-in-out, padding 0.5s ease-in-out;
    flex-direction: column;
    align-items: center;
    padding: 0;
  }
  
  /* Class to show the menu */
  .nav-links.open {
    max-height: 500px; /* A large enough value to reveal all links */
    padding: 1rem 0; /* Add vertical padding when open */
    gap: 1.5rem;
  }

  .contact-hero {
      height: 40vh; /* Shorter hero on mobile */
  }
  .contact-hero-title {
    font-size: 3rem;
  }
  .contact-hero-subtitle {
    font-size: 1.25rem;
  }
  .form-section {
    padding: 3rem 1rem;
  }
  .contact-form-container {
    padding: 2.5rem 1.5rem;
    transform: translateY(-30px); /* Less overlap on mobile */
  }
  .contact-form-header h1 {
    font-size: 2.5rem;
  }
  .contact-form-header p {
    font-size: 1rem;
  }
  .contact-form-input,
  .contact-form-textarea,
  .contact-form-select,
  .contact-submit-btn {
      padding: 0.9rem 1.25rem;
      font-size: 1rem;
  }
  .contact-form-textarea {
      min-height: 120px;
  }
}