:root {
    --bg-color: #ffffff;
    --text-main: #1d1d1f;
    --text-sec: #86868b;
    --accent-pink: #fa2d48;
    --accent-pink-hover: #e02640;
    --card-bg: #f5f5f7;
    --border-radius: 18px;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    -webkit-font-smoothing: antialiased;
}

.navbar {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0,0,0,0.05);
    padding: 15px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar .logo {
    font-size: 24px;
    font-weight: 700;
    color: var(--accent-pink);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.nav-links a {
    color: var(--text-main);
    text-decoration: none;
    margin-left: 20px;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--accent-pink);
}

.hero {
    text-align: center;
    padding: 80px 20px;
    background: linear-gradient(180deg, #ffffff 0%, #fff0f3 100%);
    border-radius: 0 0 40px 40px;
}

.hero h1 {
    font-size: 56px;
    font-weight: 800;
    letter-spacing: -2px;
    margin-bottom: 20px;
    background: linear-gradient(90deg, var(--text-main), var(--accent-pink));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 20px;
    color: var(--text-sec);
    max-width: 600px;
    margin: 0 auto 40px auto;
    line-height: 1.5;
}

.btn {
    background-color: var(--accent-pink);
    color: #fff;
    padding: 14px 28px;
    border-radius: 30px;
    text-decoration: none;
    font-size: 17px;
    font-weight: 600;
    border: 2px solid var(--accent-pink);
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 4px 14px rgba(250, 45, 72, 0.3);
    display: inline-block;
}

.btn:hover {
    background-color: var(--accent-pink-hover);
    border-color: var(--accent-pink-hover);
    transform: scale(1.02);
}

.btn-outline {
    background: transparent;
    color: var(--accent-pink);
    box-shadow: none;
}

.btn-outline:hover {
    background: var(--accent-pink);
    color: #fff;
}

.container {
    max-width: 1000px;
    margin: 40px auto;
    padding: 0 20px;
}

.card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 4px 24px rgba(0,0,0,0.04);
}

.card h2 {
    margin-top: 0;
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.code-block {
    background: #1d1d1f;
    color: #f5f5f7;
    padding: 20px;
    border-radius: 12px;
    font-family: "SF Mono", Consolas, monospace;
    font-size: 14px;
    overflow-x: auto;
    margin-top: 15px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-main);
}

.form-control {
    width: 100%;
    padding: 14px;
    border: 1px solid #d2d2d7;
    border-radius: 12px;
    font-size: 16px;
    box-sizing: border-box;
    background: #fff;
    transition: all 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-pink);
    box-shadow: 0 0 0 4px rgba(250, 45, 72, 0.1);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 14px;
}

.btn-danger {
    background-color: #dc2626;
    border-color: #dc2626;
}

.btn-danger:hover {
    background-color: #b91c1c;
    border-color: #b91c1c;
}

/* Toast notification */
.toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: var(--text-main);
    color: white;
    padding: 16px 24px;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 500;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 9999;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

/* Responsive table */
@media (max-width: 768px) {
    .card table thead {
        display: none;
    }
    
    .card table tbody tr {
        display: block;
        padding: 20px;
        border-bottom: 1px solid #eee;
    }
    
    .card table tbody td {
        display: block;
        padding: 8px 0;
        text-align: left;
    }
    
    .card table tbody td:last-child {
        display: flex;
        gap: 10px;
        padding-top: 16px;
    }
}