:root {
    --glass-bg: rgba(255, 255, 255, 0.277);
    --glass-border: rgba(255, 255, 255, 0.6);
    --blur-amount: 16px;
    --accent-color: #ffbde2;
    --text-main: #ffffff;
    --text-dark: #333333;
}

* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Segoe UI', 'PingFang SC', sans-serif; }

body {
    min-height: 100vh;
    overflow-x: hidden;
    color: var(--text-main);
}

.bg-layer {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: url('images/index-city.png') no-repeat center center/cover;
    z-index: -1;
    filter: brightness(0.5);
}

.glass-nav {
    position: fixed;
    top: 0; left: 0; width: 100%;
    height: 70px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 5%;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(var(--blur-amount));
    -webkit-backdrop-filter: blur(var(--blur-amount));
    border-bottom: 1px solid var(--glass-border);
    z-index: 100;
}

.logo { font-size: 1.5rem; font-weight: bold; letter-spacing: 2px; }

.nav-links { list-style: none; display: flex; gap: 30px; }
.nav-links a {
    text-decoration: none;
    color: var(--text-main);
    font-size: 0.95rem;
    position: relative;
    transition: color 0.3s;
}
.nav-links a:hover, .nav-links a.active { color: var(--accent-color); }
.nav-links a::after {
    content: ''; position: absolute; bottom: -5px; left: 0; width: 0; height: 2px;
    background: var(--accent-color); transition: width 0.3s;
}
.nav-links a:hover::after { width: 100%; }

.login-btn {
    padding: 8px 24px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    color: var(--text-main);
    text-decoration: none;
    transition: all 0.3s;
}
.login-btn:hover { background: var(--accent-color); border-color: var(--accent-color); }

.hero-section {
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding-top: 70px;
}

.hero-title { font-size: 4rem; margin-bottom: 10px; text-shadow: 0 4px 10px rgba(0,0,0,0.3); }
.hero-subtitle { font-size: 1.2rem; opacity: 0.9; margin-bottom: 5px; }
.hero-status { font-size: 1rem; opacity: 0.7; margin-bottom: 40px; }

.cta-btn {
    padding: 12px 40px;
    background: var(--accent-color);
    color: white;
    text-decoration: none;
    border-radius: 30px;
    font-weight: bold;
    box-shadow: 0 4px 15px rgba(255, 154, 158, 0.4);
    transition: transform 0.2s, box-shadow 0.2s;
}
.cta-btn:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(255, 154, 158, 0.6); }

.login-container {
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 400px;
    color: var(--text-dark);
}

.login-card h2 { text-align: center; margin-bottom: 5px; color: var(--text-dark); }
.login-desc { text-align: center; font-size: 0.9rem; color: #666; margin-bottom: 30px; }

.input-group { margin-bottom: 20px; }
.input-group label { display: block; margin-bottom: 8px; font-size: 0.9rem; color: #444; }
.input-group input {
    width: 100%; padding: 12px;
    border: 1px solid rgba(255,255,255,0.5);
    border-radius: 8px;
    background: rgba(255,255,255,0.6);
    outline: none; transition: border-color 0.3s;
}
.input-group input:focus { border-color: var(--accent-color); background: white; }

.full-width { width: 100%; border: none; cursor: pointer; font-size: 1rem; }

.login-footer {
    margin-top: 20px;
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
}
.login-footer a { color: #666; text-decoration: none; }
.login-footer a:hover { color: var(--accent-color); }