*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --admin-primary: #4A90D9;
    --admin-primary-hover: #357ABD;
    --admin-bg: #f0f2f5;
    --admin-card: #ffffff;
    --admin-text: #1a1a2e;
    --admin-text-light: #6b7280;
    --admin-border: #e5e7eb;
    --admin-radius: 10px;
    --admin-shadow: 0 2px 12px rgba(0,0,0,0.08);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--admin-bg);
    color: var(--admin-text);
    min-height: 100vh;
    line-height: 1.6;
}

.admin-container {
    max-width: 680px;
    margin: 0 auto;
    padding: 40px 20px;
}

.admin-header {
    text-align: center;
    margin-bottom: 40px;
}

.admin-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--admin-text);
    margin-bottom: 8px;
}

.admin-subtitle {
    font-size: 16px;
    color: var(--admin-text-light);
}

.admin-card {
    background: var(--admin-card);
    border-radius: var(--admin-radius);
    box-shadow: var(--admin-shadow);
    padding: 32px;
    margin-bottom: 24px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group:last-child {
    margin-bottom: 0;
}

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--admin-text);
    margin-bottom: 8px;
}

.form-hint {
    font-size: 13px;
    color: var(--admin-text-light);
    font-weight: 400;
    margin-left: 4px;
}

.form-textarea {
    width: 100%;
    min-height: 120px;
    padding: 14px 16px;
    border: 1px solid var(--admin-border);
    border-radius: 8px;
    font-size: 15px;
    font-family: inherit;
    resize: vertical;
    transition: border-color 0.2s;
    line-height: 1.6;
}

.form-textarea:focus {
    outline: none;
    border-color: var(--admin-primary);
    box-shadow: 0 0 0 3px rgba(74, 144, 217, 0.15);
}

.form-select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--admin-border);
    border-radius: 8px;
    font-size: 15px;
    font-family: inherit;
    background: #fff;
    cursor: pointer;
    transition: border-color 0.2s;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b7280' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
}

.form-select:focus {
    outline: none;
    border-color: var(--admin-primary);
    box-shadow: 0 0 0 3px rgba(74, 144, 217, 0.15);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-color-wrap {
    display: flex;
    align-items: center;
    gap: 12px;
}

.form-color-input {
    width: 50px;
    height: 42px;
    border: 1px solid var(--admin-border);
    border-radius: 8px;
    cursor: pointer;
    padding: 2px;
}

.form-color-hex {
    padding: 12px 16px;
    border: 1px solid var(--admin-border);
    border-radius: 8px;
    font-size: 15px;
    font-family: 'Courier New', monospace;
    width: 120px;
    text-transform: uppercase;
}

.form-color-hex:focus {
    outline: none;
    border-color: var(--admin-primary);
}

.btn-generate {
    width: 100%;
    padding: 16px 24px;
    background: var(--admin-primary);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
}

.btn-generate:hover {
    background: var(--admin-primary-hover);
}

.btn-generate:active {
    transform: scale(0.99);
}

.btn-generate:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.progress-section {
    display: none;
}

.progress-section.visible {
    display: block;
}

.progress-bar-wrap {
    background: var(--admin-border);
    border-radius: 20px;
    height: 8px;
    overflow: hidden;
    margin-bottom: 16px;
}

.progress-bar {
    height: 100%;
    background: var(--admin-primary);
    border-radius: 20px;
    width: 0%;
    transition: width 0.5s ease;
}

.progress-status {
    font-size: 14px;
    color: var(--admin-text-light);
    text-align: center;
}

.result-section {
    display: none;
}

.result-section.visible {
    display: block;
}

.result-success {
    text-align: center;
    padding: 24px 0;
}

.result-icon {
    width: 56px;
    height: 56px;
    line-height: 56px;
    font-size: 28px;
    background: #d1fae5;
    color: #059669;
    border-radius: 50%;
    margin: 0 auto 16px;
}

.result-message {
    font-size: 18px;
    font-weight: 600;
    color: var(--admin-text);
    margin-bottom: 6px;
}

.result-details {
    font-size: 13px;
    color: var(--admin-text-light);
    margin-bottom: 24px;
}

.result-actions {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 16px;
}

.btn-download {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    background: #10b981;
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.2s;
}

.btn-download:hover {
    background: #059669;
    color: #fff;
}

.btn-preview {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    background: var(--admin-primary);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.2s;
}

.btn-preview:hover {
    background: var(--admin-primary-hover);
    color: #fff;
}


.error-section {
    display: none;
}

.error-section.visible {
    display: block;
}

.error-message {
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: 8px;
    padding: 16px 20px;
    color: #dc2626;
    font-size: 14px;
    line-height: 1.6;
}

.login-box {
    max-width: 400px;
    margin: 120px auto 0;
}

.login-title {
    font-size: 24px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 28px;
    color: var(--admin-text);
}

.login-error {
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: 8px;
    padding: 12px 16px;
    color: #dc2626;
    font-size: 14px;
    margin-bottom: 20px;
    text-align: center;
}

@media (max-width: 600px) {
    .admin-container {
        padding: 20px 16px;
    }
    .admin-card {
        padding: 24px 20px;
    }
    .form-row {
        grid-template-columns: 1fr;
    }
}