/* ===== CSS VARIABLES & THEME ===== */
:root {
  --bg-light: #FFF9F0;
  --primary: #FF7F50;
  --primary-dark: #FF5A36;
  --accent: #FFA07A;
  --accent-light: #FFB6C1;
  --accent-lighter: #FFE4E1;
  --text: #333333;
  --text-light: #666666;
  --text-lighter: #868e96;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.1);
  --font-sans: 'Inter', 'Noto Sans SC', 'PingFang SC', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
  --font-serif: 'Playfair Display', 'Noto Serif SC', serif;
  --font-mono: 'Ma Shan Zheng', cursive;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--primary), var(--accent));
  --gradient-accent: linear-gradient(135deg, var(--accent-light), var(--accent-lighter), #F0E68C);
  --gradient-bg: linear-gradient(135deg, #f9f9f9, #e0eafc);
  --gradient-header: linear-gradient(135deg, var(--accent-light), var(--accent-lighter), #F0E68C, #E0FFFF, #DDA0DD);
  
  /* Common Gradients */
  --gradient-blue: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-pink: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --gradient-green: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
  --gradient-warm: linear-gradient(135deg, #ffb6c1, #ffe4e1, #f0e68c);
  --gradient-warm-hover: linear-gradient(135deg, #ff91a4, #ffd1d4, #ede066);
  
  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 40px;
}

/* ===== GLOBAL RESET & BASE STYLES ===== */
* {
  -webkit-font-smoothing: antialiased;
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: var(--font-sans);
  background: var(--bg-light);
  color: var(--text);
  line-height: 1.6;
  width: 100%;
  overflow-x: hidden;
}

/* ===== COMMON BACKGROUNDS ===== */
.bg-gradient-default {
  background: var(--gradient-bg);
}

.bg-gradient-blue {
  background: var(--gradient-blue);
}

.bg-gradient-pink {
  background: var(--gradient-pink);
}

.bg-gradient-green {
  background: var(--gradient-green);
}

/* ===== COMMON ANIMATIONS ===== */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

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

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes shimmer {
  0% {
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
  }
  100% {
    background-position: 20px 20px, 20px 30px, 30px 10px, 10px 20px;
  }
}

.animate-fade-in {
  animation: fadeIn 1s ease forwards;
}

.animate-fade-up {
  animation: fadeInUp 0.6s ease-out;
}

.animate-fade-down {
  animation: fadeInDown 1s ease;
}

.animate-slide-up {
  animation: slideUp 0.6s ease-out;
}

/* ===== COMMON BUTTON STYLES ===== */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-md);
  border: none;
  border-radius: var(--radius-sm);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 14px;
  text-align: center;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow);
}

.btn-primary:hover {
  background: var(--primary-dark);
}

.btn-secondary {
  background: var(--gradient-accent);
  color: var(--text);
  box-shadow: var(--shadow);
}

.btn-secondary:hover {
  background: var(--gradient-warm-hover);
}

.btn-blue {
  background: var(--gradient-blue);
  color: white;
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn-blue:hover {
  box-shadow: 0 6px 20px rgba(102, 126, 234, 0.6);
}

.btn-pink {
  background: var(--gradient-pink);
  color: white;
  box-shadow: 0 4px 15px rgba(240, 147, 251, 0.4);
}

.btn-pink:hover {
  box-shadow: 0 6px 20px rgba(240, 147, 251, 0.6);
}

.btn-green {
  background: var(--gradient-green);
  color: white;
  box-shadow: 0 4px 15px rgba(17, 153, 142, 0.4);
}

.btn-green:hover {
  box-shadow: 0 6px 20px rgba(17, 153, 142, 0.6);
}

.btn-warm {
  background: var(--gradient-warm);
  color: var(--text);
  border: none;
  padding: 10px 20px;
  border-radius: 6px;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-warm:hover {
  background: var(--gradient-warm-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(255, 182, 193, 0.3);
}

.btn-large {
  padding: 12px 24px;
  font-size: 16px;
  border-radius: 25px;
}

.btn-full {
  width: 100%;
}

/* Button container */
.buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
  align-items: center;
}

/* Enhanced button styles */
button {
  padding: 12px 20px;
  color: #666;
  border: none;
  border-radius: 12px;
  font-weight: 600;
  cursor: pointer;
  font-size: 14px;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(255, 182, 193, 0.3);
}

button:hover {
  background: linear-gradient(135deg, #FFD1DC, #F5DEB3, #B0E0E6);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(255, 182, 193, 0.4);
}

.primary-btn {
  background: linear-gradient(135deg, #FF91A4, #FFB6C1, #FFE4B5, #98FB98) !important;
  color: #fff !important;
  font-weight: 700;
  box-shadow: 0 6px 20px rgba(255, 145, 164, 0.4);
  position: relative;
  overflow: hidden;
}

.primary-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: left 0.5s;
}

.primary-btn:hover::before {
  left: 100%;
}

.primary-btn:hover {
  background: linear-gradient(135deg, #FF69B4, #FF91A4, #FFD700, #90EE90) !important;
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 25px rgba(255, 105, 180, 0.5);
}

.upload-btn {
  background: linear-gradient(135deg, #F5F5F5, #E6E6FA, #F0F8FF);
  color: #666;
  border: 1px solid rgba(221, 160, 221, 0.3);
  box-shadow: 0 3px 8px rgba(221, 160, 221, 0.2);
  min-width: 140px;
  padding: 8px 16px;
}

.upload-btn:hover {
  background: linear-gradient(135deg, #E6E6FA, #D8BFD8, #E0E6FF);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(221, 160, 221, 0.3);
}

/* ===== COMMON FORM STYLES ===== */
.form {
  width: 600px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 15px;
  align-self: flex-start;
  position: sticky;
  top: 0;
}

.form-row {
  display: flex;
  gap: 15px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
}

.form label {
  font-weight: bold;
  color: #4a6fa5;
  font-size: 14px;
}

/* Important field labels */
label[for="title"],
label[for="quote"],
label[for="detail"],
label[for="creator"] {
  font-size: 15px !important;
  font-weight: 700 !important;
  color: #2c3e50 !important;
  margin-bottom: 8px !important;
}

/* Required field indicators */
label[for="title"]::after,
label[for="quote"]::after,
label[for="detail"]::after {
  content: " *";
  color: #e74c3c;
  font-weight: bold;
}

.form input,
.form textarea,
.form select,
.form-input {
  width: 100%;
  padding: 10px;
  font-size: 14px;
  border: 1px solid #ddd;
  border-radius: 8px;
  background-color: #f9f9f9;
  transition: all 0.3s ease;
}

/* Important input fields */
#title,
#quote,
#detail,
#creator {
  background-color: #fff;
  border: 1.5px solid #ddd;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.05);
  font-weight: 500;
  transition: all 0.3s ease;
}

#title {
  font-size: 16px;
  padding: 12px;
  box-shadow: 0 1px 4px rgba(255, 182, 193, 0.1);
}

#quote,
#detail {
  font-size: 15px;
  padding: 12px;
  line-height: 1.5;
  border-color: #B0C4DE;
  box-shadow: 0 1px 4px rgba(176, 196, 222, 0.1);
}

#creator {
  border-color: #B0C4DE;
  box-shadow: 0 1px 4px rgba(176, 196, 222, 0.1);
}

.form input:focus,
.form textarea:focus,
.form select:focus,
.form-input:focus {
  border-color: #4a6fa5;
  box-shadow: 0 0 0 3px rgba(74, 111, 165, 0.2);
  background-color: #fff;
  outline: none;
}

#title:focus,
#quote:focus,
#detail:focus,
#creator:focus {
  border-color: #4a6fa5 !important;
  box-shadow: 0 0 0 4px rgba(74, 111, 165, 0.3) !important;
}

.form-input::placeholder,
.form-input::-webkit-input-placeholder {
  color: #6c757d;
  opacity: 0.7;
}

/* ===== COMMON MESSAGE STYLES ===== */
.message {
  padding: 12px;
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
  border: 1px solid;
  display: none;
}

.message-error {
  background: #f8d7da;
  color: #721c24;
  border-color: #f5c6cb;
}

.message-success {
  background: #d4edda;
  color: #155724;
  border-color: #c3e6cb;
}

.message-info {
  background: #d1ecf1;
  color: #0c5460;
  border-color: #bee5eb;
}

/* ===== COMMON LOADING STYLES ===== */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid #ffffff;
  border-radius: 50%;
  border-top-color: transparent;
  animation: spin 1s ease-in-out infinite;
  margin-right: 8px;
}

.loading-placeholder {
  width: 100%;
  height: 200px;
  background: linear-gradient(45deg, #f0f0f0 25%, transparent 25%), 
              linear-gradient(-45deg, #f0f0f0 25%, transparent 25%), 
              linear-gradient(45deg, transparent 75%, #f0f0f0 75%), 
              linear-gradient(-45deg, transparent 75%, #f0f0f0 75%);
  background-size: 20px 20px;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #666;
  font-size: 14px;
  animation: shimmer 2s infinite;
}

/* ===== COMMON CARD HOVER EFFECTS ===== */
.card-hover-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.7);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
  z-index: 10;
  padding: 20px;
  box-sizing: border-box;
}

.card-container:hover .card-hover-overlay {
  opacity: 1;
  pointer-events: auto;
}

/* ===== COMMON TAB STYLES ===== */
.tab-container {
  display: flex;
  background: #f8f9fa;
}

.tab {
  flex: 1;
  padding: 16px;
  text-align: center;
  cursor: pointer;
  font-weight: 600;
  color: #6c757d;
  transition: all 0.3s ease;
  border: none;
  background: none;
}

.tab.active {
  background: white;
  color: #007acc;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* ===== LAYOUT SYSTEM ===== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 30px 20px;
  gap: 40px;
  align-items: flex-start;
}

.page-content {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--spacing-xl) 20px;
  box-sizing: border-box;
  gap: var(--spacing-xl);
  flex: 1 0 auto;
}

/* ===== HEADER STYLES ===== */
.site-header {
  background: white;
  border-bottom: 1px solid rgba(255, 127, 80, 0.1);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 1000;
  width: 100%;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.site-branding {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.site-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
  transition: color 0.3s ease;
  line-height: 1.2;
  display: flex;
  align-items: center;
}

.site-logo {
  width: auto;
  height: 40px;
  margin-right: 10px;
  transition: transform 0.3s ease;
}

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

.site-title:hover {
  color: var(--primary-dark);
}

.site-subtitle {
  font-size: 12px;
  color: var(--text-light);
  font-weight: 400;
  line-height: 1;
}

.header-nav {
  display: flex;
  gap: var(--spacing-lg);
  align-items: center;
}

.nav-link {
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-sm);
  transition: all 0.3s ease;
  position: relative;
}

.nav-link:hover {
  background: var(--bg-light);
  color: var(--primary);
  transform: translateY(-1px);
}

.nav-link.active {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow);
}

.auth-section {
  display: flex;
  align-items: center;
}

.login-btn {
  background: var(--gradient-primary);
  color: white;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s ease;
  box-shadow: var(--shadow);
}

.login-btn:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.user-dropdown {
  position: relative;
}

.user-btn {
  background: none;
  border: none;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 500;
  color: var(--text);
  transition: background 0.3s ease;
}

.user-btn:hover {
  background: var(--bg-light);
}

.dropdown-icon {
  transition: transform 0.3s ease;
}

.user-dropdown.open .dropdown-icon {
  transform: rotate(180deg);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  background: white;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  padding: var(--spacing-sm) 0;
  min-width: 140px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.3s ease;
  z-index: 100;
}

.user-dropdown.open .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  border: none;
  background: none;
  text-align: left;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  transition: all 0.2s ease;
  display: block;
  white-space: nowrap;
}

.dropdown-item:hover {
  background: rgba(102, 102, 102, 0.1);
  color: #444;
}

.logout-btn {
  color: #dc3545;
}

.logout-btn:hover {
  background: #dc3545;
  color: white;
}

/* ===== FOOTER STYLES ===== */
.site-footer {
  background: white;
  border-top: 1px solid rgba(255, 127, 80, 0.1);
  padding: var(--spacing-xl) 0;
  margin-top: auto;
  width: 100%;
}

.footer-container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
}

.footer-left {
  flex: 1;
}

.copyright {
  color: var(--text-light);
  font-size: 14px;
  margin: 0;
}

.footer-right {
  display: flex;
  align-items: center;
}

.footer-links {
  display: flex;
  gap: var(--spacing-lg);
  align-items: center;
}

.footer-link {
  color: var(--text-light);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.3s ease;
  display: flex;
  align-items: center;
  gap: 4px;
}

.footer-link:hover {
  color: var(--primary);
}

.github-icon {
  width: 16px;
  height: 16px;
  transition: transform 0.3s ease;
}

.footer-link:hover .github-icon {
  transform: scale(1.1);
}

.footer-bottom {
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 127, 80, 0.1);
}

.footer-description {
  color: var(--text-lighter);
  font-size: 12px;
  text-align: center;
  margin: 0;
  line-height: 1.5;
}

/* ===== CARD STYLES ===== */
.card {
  background: white;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: all 0.3s ease;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* ===== SECTION STYLES ===== */
.section-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: var(--spacing-lg);
  text-align: center;
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: var(--gradient-primary);
  border-radius: 2px;
}

/* ===== FORM STYLES ===== */
.form-group {
  margin-bottom: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.form-label {
  font-weight: 600;
  color: var(--text);
  font-size: 14px;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--spacing-sm);
  font-size: 14px;
  border: 1px solid #ddd;
  border-radius: var(--radius-sm);
  background-color: #f9f9f9;
  transition: all 0.3s ease;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(255, 127, 80, 0.2);
  background-color: #fff;
  outline: none;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: #888;
  opacity: 0.7;
}

/* ===== GRADIENT SELECTOR STYLES ===== */
.gradient-selector {
  display: grid;
  grid-template-columns: repeat(14, 1fr);
  gap: 6px;
  margin-top: 6px;
}

.gradient-option {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: 2px solid transparent;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.gradient-option:hover {
  transform: scale(1.1);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.gradient-option.selected {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(255, 127, 80, 0.3);
  transform: scale(1.05);
}

.gradient-option::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: inherit;
  opacity: 0.8;
}

/* 为每个渐变选项添加对应的背景 */
.gradient-option[data-gradient="card-gradient-1"] {
  background-image: linear-gradient(to right top,
      rgba(209, 107, 165, 0.8), rgba(199, 119, 185, 0.7), rgba(186, 131, 202, 0.6),
      rgba(170, 143, 216, 0.5), rgba(154, 154, 225, 0.4), rgba(138, 167, 236, 0.3),
      rgba(121, 179, 244, 0.2), rgba(105, 191, 248, 0.3), rgba(82, 207, 254, 0.4),
      rgba(65, 223, 255, 0.5), rgba(70, 238, 250, 0.6), rgba(95, 251, 241, 0.7));
}

.gradient-option[data-gradient="card-gradient-2"] {
  background-image: linear-gradient(to right top,
      rgba(255, 126, 95, 0.8), rgba(255, 140, 109, 0.7), rgba(255, 154, 124, 0.6),
      rgba(255, 168, 138, 0.5), rgba(255, 182, 153, 0.4), rgba(255, 194, 168, 0.3),
      rgba(255, 206, 184, 0.2), rgba(255, 217, 199, 0.3), rgba(255, 229, 215, 0.4),
      rgba(255, 242, 231, 0.5), rgba(255, 254, 250, 0.6), rgba(255, 255, 255, 0.7));
}

.gradient-option[data-gradient="card-gradient-3"] {
  background-image: linear-gradient(to right top,
      rgba(107, 33, 168, 0.8), rgba(134, 47, 178, 0.7), rgba(160, 61, 189, 0.6),
      rgba(186, 76, 200, 0.5), rgba(211, 91, 211, 0.4), rgba(227, 108, 217, 0.3),
      rgba(242, 125, 223, 0.2), rgba(255, 141, 229, 0.3), rgba(255, 157, 226, 0.4),
      rgba(255, 172, 223, 0.5), rgba(255, 188, 221, 0.6), rgba(255, 204, 220, 0.7));
}

.gradient-option[data-gradient="card-gradient-4"] {
  background-image: linear-gradient(to right top,
      rgba(0, 201, 255, 0.8), rgba(0, 179, 255, 0.7), rgba(0, 156, 255, 0.6),
      rgba(0, 130, 255, 0.5), rgba(0, 100, 255, 0.4), rgba(0, 89, 255, 0.3),
      rgba(0, 77, 255, 0.2), rgba(0, 63, 255, 0.3), rgba(0, 49, 255, 0.4),
      rgba(0, 32, 255, 0.5), rgba(0, 12, 255, 0.6), rgba(11, 0, 255, 0.7));
}

.gradient-option[data-gradient="card-gradient-5"] {
  background-image: linear-gradient(to right top,
      rgba(249, 197, 44, 0.8), rgba(246, 182, 47, 0.7), rgba(242, 168, 51, 0.6),
      rgba(238, 153, 55, 0.5), rgba(233, 139, 60, 0.4), rgba(227, 126, 65, 0.3),
      rgba(221, 113, 70, 0.2), rgba(215, 100, 76, 0.3), rgba(207, 86, 79, 0.4),
      rgba(198, 73, 82, 0.5), rgba(188, 60, 84, 0.6), rgba(178, 48, 86, 0.7));
}

.gradient-option[data-gradient="card-gradient-6"] {
  background-image: linear-gradient(to right top,
      rgba(168, 255, 120, 0.8), rgba(159, 245, 120, 0.7), rgba(150, 235, 120, 0.6),
      rgba(141, 225, 120, 0.5), rgba(132, 215, 120, 0.4), rgba(124, 208, 120, 0.3),
      rgba(116, 201, 120, 0.2), rgba(108, 194, 120, 0.3), rgba(99, 186, 121, 0.4),
      rgba(90, 179, 121, 0.5), rgba(81, 172, 122, 0.6), rgba(72, 165, 122, 0.7));
}

.gradient-option[data-gradient="card-gradient-7"] {
  background-image: linear-gradient(to right top,
      rgba(255, 138, 0, 0.8), rgba(255, 122, 26, 0.7), rgba(255, 105, 42, 0.6),
      rgba(255, 86, 55, 0.5), rgba(255, 63, 67, 0.4), rgba(255, 54, 76, 0.3),
      rgba(255, 44, 85, 0.2), rgba(255, 33, 94, 0.3), rgba(255, 26, 106, 0.4),
      rgba(255, 23, 118, 0.5), rgba(255, 26, 131, 0.6), rgba(249, 37, 144, 0.7));
}

.gradient-option[data-gradient="card-gradient-8"] {
  background-image: linear-gradient(to right top,
      rgba(240, 248, 255, 0.8), rgba(230, 240, 250, 0.7), rgba(220, 235, 245, 0.6),
      rgba(210, 230, 240, 0.5), rgba(200, 225, 235, 0.4), rgba(190, 220, 230, 0.3),
      rgba(180, 215, 225, 0.2), rgba(170, 210, 220, 0.3));
}

.gradient-option[data-gradient="card-gradient-9"] {
  background-image: linear-gradient(to right top,
      rgba(248, 250, 252, 0.8), rgba(241, 245, 249, 0.7), rgba(234, 240, 246, 0.6),
      rgba(226, 232, 240, 0.5), rgba(203, 213, 225, 0.4), rgba(186, 200, 214, 0.3),
      rgba(169, 187, 203, 0.2), rgba(148, 163, 184, 0.3));
}

.gradient-option[data-gradient="card-gradient-10"] {
  background-image: linear-gradient(to right top,
      rgba(254, 252, 232, 0.8), rgba(253, 246, 178, 0.7), rgba(252, 211, 77, 0.6),
      rgba(245, 158, 11, 0.5), rgba(217, 119, 6, 0.4), rgba(180, 83, 9, 0.3),
      rgba(146, 64, 14, 0.2), rgba(120, 53, 15, 0.3));
}

.gradient-option[data-gradient="card-gradient-11"] {
  background-image: linear-gradient(to right top,
      rgba(240, 253, 244, 0.8), rgba(220, 252, 231, 0.7), rgba(187, 247, 208, 0.6),
      rgba(134, 239, 172, 0.5), rgba(74, 222, 128, 0.4), rgba(34, 197, 94, 0.3),
      rgba(22, 163, 74, 0.2), rgba(21, 128, 61, 0.3));
}

.gradient-option[data-gradient="card-gradient-12"] {
  background-image: linear-gradient(to right top,
      rgba(253, 244, 255, 0.8), rgba(250, 232, 255, 0.7), rgba(243, 232, 255, 0.6),
      rgba(233, 213, 255, 0.5), rgba(196, 181, 253, 0.4), rgba(167, 139, 250, 0.3),
      rgba(139, 92, 246, 0.2), rgba(124, 58, 237, 0.3));
}

.gradient-option[data-gradient="card-gradient-13"] {
  background-image: linear-gradient(to right top,
      rgba(255, 251, 235, 0.8), rgba(254, 243, 199, 0.7), rgba(253, 230, 138, 0.6),
      rgba(252, 211, 77, 0.5), rgba(245, 158, 11, 0.4), rgba(217, 119, 6, 0.3),
      rgba(194, 65, 12, 0.2), rgba(154, 52, 18, 0.3));
}

.gradient-option[data-gradient="card-gradient-14"] {
  background-image: linear-gradient(to right top,
      rgba(248, 250, 252, 0.8), rgba(241, 245, 249, 0.7), rgba(226, 232, 240, 0.6),
      rgba(203, 213, 225, 0.5), rgba(148, 163, 184, 0.4), rgba(100, 116, 139, 0.3),
      rgba(71, 85, 105, 0.2), rgba(51, 65, 85, 0.3));
}

/* ===== UTILITY CLASSES ===== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.mt-0 { margin-top: 0; }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.p-0 { padding: 0; }
.p-sm { padding: var(--spacing-sm); }
.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }
.p-xl { padding: var(--spacing-xl); }

.d-flex { display: flex; }
.d-grid { display: grid; }
.d-block { display: block; }
.d-none { display: none; }

.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }

.align-center { align-items: center; }
.align-start { align-items: flex-start; }
.align-end { align-items: flex-end; }

.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }
.gap-xl { gap: var(--spacing-xl); }

.w-full { width: 100%; }
.h-full { height: 100%; }

.rounded { border-radius: var(--radius); }
.rounded-sm { border-radius: var(--radius-sm); }
.rounded-lg { border-radius: var(--radius-lg); }

.shadow { box-shadow: var(--shadow); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
  .header-container {
    padding: 0 15px;
    height: 50px;
  }

  .header-nav {
    gap: var(--spacing-md);
  }

  .nav-link {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 14px;
  }

  .site-title {
    font-size: 18px;
  }

  .site-subtitle {
    font-size: 11px;
  }

  .site-footer {
    width: 100%;
  }

  .footer-container {
    padding: 0 15px;
    width: 100%;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-md);
    width: 100%;
  }

  .footer-right {
    justify-content: center;
    width: 100%;
  }

  .footer-links {
    justify-content: center;
    width: 100%;
  }

  .footer-description {
    font-size: 11px;
    width: 100%;
  }

  .container {
    padding: 0 15px;
  }

  .page-content {
    padding: var(--spacing-lg) 15px;
    width: 100%;
  }

  .gradient-selector {
    grid-template-columns: repeat(7, 1fr);
  }

  .gradient-option {
    width: 35px;
    height: 35px;
  }
}

@media (max-width: 480px) {
  .header-nav {
    gap: var(--spacing-sm);
  }

  .nav-link {
    padding: var(--spacing-xs);
    font-size: 13px;
  }

  .login-btn {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 13px;
  }

  .footer-links {
    flex-direction: column;
    gap: var(--spacing-sm);
  }

  .footer-link {
    font-size: 13px;
  }

  .site-footer {
    padding: var(--spacing-lg) 0;
  }
}

/* ===== PRINT STYLES ===== */
@media print {
  .site-header,
  .site-footer,
  .nav-link,
  .btn {
    display: none !important;
  }

  body {
    background: white !important;
    color: black !important;
  }

  .container {
    max-width: none !important;
    padding: 0 !important;
  }
}