/* Common CSS for all pages */

/* CSS Variables */
:root {
    --primary-color: #2193b0;
    --secondary-color: #6dd5ed;
    --text-color: #2c3e50;
    --bg-color: #ADD8E6;
    --card-bg: #ffffff;
    --card-bg-dark: #2c3e50;
    --header-bg: #ffffff;
    --header-bg-dark: #34495e;
    --border-color: #e1e8ed;
    --shadow-light: rgba(0, 0, 0, 0.1);
    --shadow-dark: rgba(255, 255, 255, 0.1);
}

/* Base styles */
body {
    margin: 0;
    padding: 80px 20px 20px;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: Arial, sans-serif;
    overflow-x: hidden;
}

/* Typography */
h1 {
    text-align: center;
    font-size: 2em;
}

p {
    font-size: 1.2em;
    line-height: 1.5;
}

/* Links */
a {
    color: var(--primary-color);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* Common gradient text */
.gradient-text {
    font-size: 3.5rem;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1rem;
    line-height: 1.2;
    text-align: center;
}

/* Header Navigation */
#header {
    padding: 1rem 2rem;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

#header a {
    margin-left: 1.5rem;
    font-weight: 500;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
    position: relative;
    padding: 0.5rem 0;
}

#header a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: #3498db;
    transition: width 0.3s ease-in-out;
}

#header a:hover::after {
    width: 100%;
}

#header a:hover {
    text-decoration: none;
    color: #3498db;
}

/* Theme Toggle */
.theme-switch-wrapper {
    position: fixed;
    bottom: 20px;
    right: 20px;
    display: flex;
    align-items: center;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.9);
    padding: 10px;
    border-radius: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.theme-switch {
    display: inline-block;
    width: 60px;
    height: 34px;
    position: relative;
}

.theme-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: .4s;
    border-radius: 34px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 26px;
    width: 26px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: #2196F3;
}

input:checked + .slider:before {
    transform: translateX(26px);
}

/* Dark Theme */
body.dark-theme {
    background-color: #1a1a2e;
    color: #e2e2e2;
}

.dark-theme div {
    color: #e2e2e2;
}

.dark-theme a {
    color: #74b9ff;
}

.dark-theme #header {
    background-color: rgba(26, 26, 46, 0.95);
}

.dark-theme .theme-switch-wrapper {
    background-color: rgba(26, 26, 46, 0.9);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.dark-theme .gradient-text {
    background: linear-gradient(45deg, #74b9ff, #00b894);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Base responsive styles */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Mobile Navigation */
@media (max-width: 768px) {
    body {
        padding: 100px 10px 10px;
    }
    
    #header {
        flex-wrap: wrap;
        justify-content: center;
        padding: 0.8rem 0.5rem;
        gap: 0.8rem;
    }
    
    #header a {
        font-size: 0.85rem;
        padding: 0.6rem 1rem;
        border-radius: 20px;
        background: rgba(52, 152, 219, 0.1);
        transition: all 0.3s ease;
        margin-left: 0;
    }
    
    #header a:hover,
    #header a.active {
        background: rgba(52, 152, 219, 0.2);
        transform: translateY(-2px);
    }
    
    .dark-theme #header a {
        background: rgba(116, 185, 255, 0.1);
    }
    
    .dark-theme #header a:hover,
    .dark-theme #header a.active {
        background: rgba(116, 185, 255, 0.2);
    }
    
    .gradient-text {
        font-size: 2.5rem;
    }
}

@media (max-width: 480px) {
    body {
        padding: 110px 5px 5px;
    }
    
    .gradient-text {
        font-size: 2rem;
    }
    
    .theme-switch-wrapper {
        bottom: 15px;
        right: 15px;
        padding: 8px;
    }
    
    .theme-switch {
        width: 50px;
        height: 28px;
    }
    
    .slider:before {
        height: 22px;
        width: 22px;
        left: 3px;
        bottom: 3px;
    }
    
    input:checked + .slider:before {
        transform: translateX(22px);
    }
}

/* Focus states for accessibility */
button:focus,
a:focus,
input:focus {
    outline: 2px solid #3498db;
    outline-offset: 2px;
}

.dark-theme button:focus,
.dark-theme a:focus,
.dark-theme input:focus {
    outline-color: #74b9ff;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

body {
    -webkit-overflow-scrolling: touch;
}

/* Footer minimal, seamless look */
.site-footer {
  background: transparent !important;
  box-shadow: none;
  border: none;
  margin-top: 40px;
  padding: 24px 0 10px 0;
}
.footer-content {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}
.footer-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: #2193b0;
  margin-bottom: 8px;
  letter-spacing: 1px;
}
.footer-details {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 24px;
  margin-top: 10px;
}
.footer-icon {
  width: 36px;
  height: 36px;
  margin: 0 6px;
  vertical-align: middle;
  border-radius: 8px;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  background: #fff;
  padding: 4px;
}
.footer-icon:hover {
  transform: scale(1.13) translateY(-2px);
  box-shadow: 0 4px 16px rgba(33,147,176,0.18);
}
@media (prefers-color-scheme: dark) {
  .site-footer {
    background: rgba(30,32,50,0.12) !important;
  }
}