/* Layout & Container */
.gvt-container {
    max-width: 680px;
    margin: 40px auto;
    padding: 0 15px;
}

.site-header {
    background: #ffffff;
    border-bottom: 1px solid #e2e8f0;
    padding: 16px 24px;
}
.header-inner {
    max-width: 1000px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.site-header .logo {
    font-size: 20px;
    font-weight: 700;
    color: #0f172a;
    text-decoration: none;
}
.auth-btn {
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 14px;
    color: #475569;
}
.auth-btn.primary {
    background: #2563eb;
    color: #fff;
}

.gvt-card {
    background: #ffffff;
    padding: 32px;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
    box-shadow: 0 4px 12px rgba(0,0,0,0.04);
}
.gvt-header h2 { margin-top: 0; margin-bottom: 6px; font-size: 24px; }
.gvt-header p { margin-top: 0; color: #64748b; margin-bottom: 24px; }

/* Form Components */
.form-group {
    margin-bottom: 20px;
}
.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    font-size: 14px;
}
.form-group input[type="file"],
.form-group select {
    width: 100%;
    padding: 12px;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    font-size: 14px;
    box-sizing: border-box;
}
.helper-text {
    font-size: 12px;
    color: #94a3b8;
    margin-top: 4px;
    display: block;
}

/* Buttons */
.gvt-btn {
    width: 100%;
    background: #2563eb;
    color: #fff;
    padding: 14px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}
.gvt-btn:hover { background: #1d4ed8; }
.gvt-btn.success { background: #16a34a; }
.gvt-btn.success:hover { background: #15803d; }
.gvt-btn.cta { background: #ea580c; text-decoration: none; display: block; text-align: center; }

/* Status & Notices */
.gvt-notice {
    padding: 18px;
    border-radius: 8px;
    margin-bottom: 20px;
}
.gvt-notice.warning { background: #fffbeb; border: 1px solid #fef3c7; color: #92400e; }
.gvt-notice.danger { background: #fef2f2; border: 1px solid #fee2e2; color: #991b1b; }
.notice-actions { margin-top: 12px; display: flex; gap: 10px; }
.gvt-btn-sm {
    text-decoration: none;
    padding: 8px 14px;
    border-radius: 6px;
    background: #e2e8f0;
    color: #334155;
    font-size: 13px;
}
.gvt-btn-sm.primary { background: #2563eb; color: #ffffff; }

/* Loader */
.gvt-status-box {
    text-align: center;
    padding: 30px;
}
.gvt-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #e2e8f0;
    border-top: 4px solid #2563eb;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 15px auto;
}
@keyframes spin { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }

/* Output */
.gvt-output-box {
    margin-top: 25px;
}
.success-banner {
    background: #dcfce7;
    color: #166534;
    padding: 12px;
    border-radius: 6px;
    margin-bottom: 12px;
    font-weight: 500;
}
#gvt-srt-content {
    width: 100%;
    padding: 12px;
    font-family: monospace;
    font-size: 13px;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    box-sizing: border-box;
    margin-bottom: 12px;
}

/* 3-Minute Marketing Modal */
.gvt-modal-overlay {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(4px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 999999;
}
.gvt-modal {
    background: #ffffff;
    max-width: 480px;
    padding: 32px;
    border-radius: 16px;
    position: relative;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}
.modal-close-btn {
    position: absolute;
    top: 16px;
    right: 16px;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: #94a3b8;
}
.badge {
    background: #ffedd5;
    color: #c2410c;
    font-size: 11px;
    font-weight: 700;
    padding: 4px 8px;
    border-radius: 12px;
    text-transform: uppercase;
}
.gvt-modal h2 { margin: 12px 0 8px 0; font-size: 22px; }
.gvt-modal p { color: #475569; font-size: 14px; line-height: 1.5; }
.features {
    list-style: none;
    padding: 0;
    margin: 16px 0 24px 0;
}
.features li {
    font-size: 13px;
    color: #334155;
    margin-bottom: 8px;
}
.features li::before {
    content: "✓ ";
    color: #16a34a;
    font-weight: bold;
}

.site-footer {
    text-align: center;
    padding: 24px;
    color: #94a3b8;
    font-size: 13px;
}