/* Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Segoe UI", Tahoma, sans-serif;
}

/* Body */
body {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 25%, #f093fb 50%, #4facfe 75%, #00f2fe 100%);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
    color: #333;
    line-height: 1.6;
    min-height: 100vh;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 20% 50%, rgba(255,255,255,0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(255,255,255,0.15) 0%, transparent 50%);
    pointer-events: none;
    z-index: 1;
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* Links */
a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

a:hover {
    color: #ff6b6b;
}

/* Header */
header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 30px 20px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.2);
    border-bottom-left-radius: 20px;
    border-bottom-right-radius: 20px;
    position: relative;
    z-index: 10;
    backdrop-filter: blur(10px);
    animation: slideDown 0.6s ease-out;
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

header h1 {
    margin-bottom: 10px;
    font-size: 32px;
    letter-spacing: 2px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
    animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
    from {
        text-shadow: 2px 2px 4px rgba(0,0,0,0.3), 0 0 10px rgba(255,255,255,0.2);
    }
    to {
        text-shadow: 2px 2px 4px rgba(0,0,0,0.3), 0 0 20px rgba(255,255,255,0.4);
    }
}

nav {
    margin-top: 15px;
}

nav a {
    color: white;
    margin-right: 25px;
    font-weight: 600;
    position: relative;
    padding: 8px 12px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

nav a::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, #ff6b6b, #feca57);
    transition: width 0.3s ease;
    border-radius: 2px;
}

nav a:hover {
    background: rgba(255,255,255,0.15);
    transform: translateY(-2px);
}

nav a:hover::before {
    width: 100%;
}

/* Container */
.container {
    width: 90%;
    max-width: 1100px;
    margin: 40px auto;
    position: relative;
    z-index: 2;
}

/* Card */
.card {
    background: linear-gradient(135deg, rgba(255,255,255,0.95) 0%, rgba(255,255,255,0.85) 100%);
    backdrop-filter: blur(10px);
    padding: 30px;
    border-radius: 20px;
    margin-bottom: 30px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.15);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: 2px solid rgba(255,255,255,0.3);
    position: relative;
    overflow: hidden;
    animation: fadeInUp 0.6s ease-out backwards;
}

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

.card:nth-child(2) { animation-delay: 0.1s; }
.card:nth-child(3) { animation-delay: 0.2s; }
.card:nth-child(4) { animation-delay: 0.3s; }

.card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(102,126,234,0.1), transparent);
    transform: rotate(45deg);
    transition: all 0.6s ease;
}

.card:hover::before {
    left: 100%;
}

.card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 15px 40px rgba(102,126,234,0.3);
    border-color: rgba(102,126,234,0.5);
}

.card h2 {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 15px;
    font-size: 26px;
    font-weight: 700;
    position: relative;
    display: inline-block;
}

.card h2::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 50px;
    height: 4px;
    background: linear-gradient(90deg, #ff6b6b, #feca57);
    border-radius: 2px;
}

.card p {
    margin-bottom: 12px;
    text-align: justify;
    color: #555;
    line-height: 1.8;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 14px 28px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 50px;
    margin-top: 15px;
    font-weight: 600;
    transition: all 0.4s ease;
    box-shadow: 0 4px 15px rgba(102,126,234,0.4);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255,255,255,0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 8px 25px rgba(102,126,234,0.6);
}

.btn:active {
    transform: translateY(-1px) scale(1.02);
}

/* Footer */
footer {
    background: linear-gradient(135deg, #2d3436 0%, #000000 100%);
    color: #dfe6e9;
    text-align: center;
    padding: 30px;
    margin-top: 60px;
    border-top-left-radius: 20px;
    border-top-right-radius: 20px;
    box-shadow: 0 -8px 32px rgba(0,0,0,0.2);
    position: relative;
    z-index: 10;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #667eea, #764ba2, #ff6b6b, #feca57);
}

/* Forms */
form input, form textarea {
    width: 100%;
    padding: 14px 18px;
    margin-top: 10px;
    margin-bottom: 18px;
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    transition: all 0.3s ease;
    background: rgba(255,255,255,0.9);
    font-size: 15px;
}

form input:focus, form textarea:focus {
    border-color: #667eea;
    box-shadow: 0 0 20px rgba(102,126,234,0.3);
    outline: none;
    background: white;
    transform: translateY(-2px);
}

form button {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    color: white;
    padding: 14px 28px;
    border-radius: 50px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.4s ease;
    box-shadow: 0 4px 15px rgba(102,126,234,0.4);
    font-size: 16px;
}

form button:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 8px 25px rgba(102,126,234,0.6);
}

form button:active {
    transform: translateY(-1px) scale(1.02);
}

/* Admin login button */
.admin-login {
    float: right;
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a6f 100%);
    padding: 12px 20px;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(255,107,107,0.4);
}

.admin-login:hover {
    background: linear-gradient(135deg, #ee5a6f 0%, #c44569 100%);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 8px 25px rgba(255,107,107,0.6);
}

/* Loading Animation */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

/* Responsive */
@media (max-width: 768px) {
    header h1 {
        font-size: 26px;
    }
    
    nav {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
    }
    
    nav a {
        margin-right: 0;
        margin-bottom: 8px;
    }
    
    .card {
        padding: 20px;
    }
    
    .card h2 {
        font-size: 22px;
    }
    
    .admin-login {
        float: none;
        display: inline-block;
        margin-top: 10px;
    }
    
    .container {
        width: 95%;
    }
}

@media (max-width: 480px) {
    header {
        padding: 20px 15px;
    }
    
    header h1 {
        font-size: 22px;
    }
    
    .card {
        padding: 18px;
        border-radius: 15px;
    }
    
    .btn, form button {
        padding: 12px 20px;
        font-size: 14px;
    }
}