* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #f3f6fb;
    color: #1f2937;
}

.topbar {
    background: #0f172a;
    color: white;
    padding: 18px 35px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand {
    font-size: 24px;
    font-weight: bold;
}

.topbar a {
    color: white;
    text-decoration: none;
    margin-left: 18px;
    font-weight: bold;
}

.hero {
    background: linear-gradient(135deg, #0f172a, #2563eb);
    color: white;
    padding: 70px 40px;
    text-align: center;
}

.hero.small {
    padding: 35px;
}

.hero h1 {
    font-size: 42px;
    margin-bottom: 10px;
}

.btn, button {
    background: #2563eb;
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 10px;
    text-decoration: none;
    cursor: pointer;
    font-weight: bold;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 22px;
    padding: 35px;
}

.card, .form-box, .admin-box, .video-page {
    background: white;
    border-radius: 18px;
    padding: 25px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.08);
}

.form-box {
    max-width: 450px;
    margin: 50px auto;
}

.form-box.wide {
    max-width: 700px;
}

input, textarea, select {
    width: 100%;
    padding: 13px;
    margin: 9px 0;
    border: 1px solid #cbd5e1;
    border-radius: 10px;
}

textarea {
    min-height: 90px;
}

.login-buttons button {
    width: 100%;
    margin-top: 8px;
    background: #111827;
}

.note {
    color: #64748b;
    font-size: 14px;
}

.locked {
    color: #dc2626;
    font-weight: bold;
}

.open {
    color: #16a34a;
    font-weight: bold;
}

.payment-card {
    background: #eff6ff;
    padding: 20px;
    border-radius: 15px;
    margin-bottom: 20px;
}

.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 15px;
    padding: 30px;
}

.stats div {
    background: white;
    padding: 25px;
    border-radius: 16px;
    text-align: center;
    box-shadow: 0 8px 20px rgba(0,0,0,0.07);
}

.stats b {
    font-size: 28px;
    color: #2563eb;
}

.admin-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 22px;
    padding: 30px;
}

.section-title {
    padding-left: 30px;
}

table {
    width: calc(100% - 60px);
    margin: 20px 30px;
    border-collapse: collapse;
    background: white;
    border-radius: 14px;
    overflow: hidden;
}

th, td {
    padding: 14px;
    border-bottom: 1px solid #e5e7eb;
    text-align: left;
}

th {
    background: #0f172a;
    color: white;
}

.mini-btn {
    background: #16a34a;
    color: white;
    padding: 8px 12px;
    border-radius: 8px;
    text-decoration: none;
}

.mini-btn.danger {
    background: #dc2626;
}

.video-page {
    max-width: 900px;
    margin: 40px auto;
}

.empty-video {
    padding: 80px;
    background: #e5e7eb;
    text-align: center;
    border-radius: 15px;
}

.flash {
    background: #dcfce7;
    color: #166534;
    padding: 15px;
    text-align: center;
}

footer {
    background: #0f172a;
    color: white;
    padding: 25px;
    text-align: center;
    margin-top: 40px;
}

.social a {
    display: inline-block;
    background: #2563eb;
    color: white;
    margin: 6px;
    padding: 10px 15px;
    border-radius: 10px;
    text-decoration: none;
}

@media(max-width: 700px) {
    .topbar, .admin-grid {
        flex-direction: column;
        grid-template-columns: 1fr;
    }

    .hero h1 {
        font-size: 30px;
    }
}