/**
 * AI YouTube Tag Generator - Modern SaaS Frontend Stylesheet
 */

:root {
    --aiyt-primary: #ff0000;
    --aiyt-primary-hover: #cc0000;
    --aiyt-accent: #7c3aed;
    --aiyt-bg: #ffffff;
    --aiyt-card-bg: #ffffff;
    --aiyt-border: #e2e8f0;
    --aiyt-text: #0f172a;
    --aiyt-text-muted: #64748b;
    --aiyt-input-bg: #f8fafc;
    --aiyt-input-border: #cbd5e1;
    --aiyt-radius: 12px;
    --aiyt-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.03);
    --aiyt-glow: 0 0 20px rgba(255, 0, 0, 0.15);
}

@media (prefers-color-scheme: dark) {
    .aiyt-container {
        --aiyt-bg: #0f172a;
        --aiyt-card-bg: #1e293b;
        --aiyt-border: #334155;
        --aiyt-text: #f8fafc;
        --aiyt-text-muted: #94a3b8;
        --aiyt-input-bg: #0f172a;
        --aiyt-input-border: #334155;
    }
}

.aiyt-container {
    max-width: 760px;
    margin: 30px auto;
    padding: 32px;
    background: var(--aiyt-card-bg);
    border: 1px solid var(--aiyt-border);
    border-radius: var(--aiyt-radius);
    box-shadow: var(--aiyt-shadow);
    font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color: var(--aiyt-text);
    box-sizing: border-box;
    transition: all 0.3s ease;
}

.aiyt-container * {
    box-sizing: border-box;
}

/* Form Header */
.aiyt-form-header {
    text-align: center;
    margin-bottom: 28px;
}

.aiyt-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 0, 0, 0.08);
    color: var(--aiyt-primary);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 12px;
}

.aiyt-badge-dot {
    width: 6px;
    height: 6px;
    background: var(--aiyt-primary);
    border-radius: 50%;
    animation: aiyt-pulse 1.5s infinite;
}

@keyframes aiyt-pulse {
    0% { transform: scale(0.95); opacity: 1; }
    50% { transform: scale(1.3); opacity: 0.7; }
    100% { transform: scale(0.95); opacity: 1; }
}

.aiyt-title {
    margin: 0 0 8px 0;
    font-size: 26px;
    font-weight: 800;
    color: var(--aiyt-text);
    letter-spacing: -0.5px;
}

.aiyt-desc {
    margin: 0;
    font-size: 15px;
    color: var(--aiyt-text-muted);
    line-height: 1.5;
}

/* Form Fields */
.aiyt-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.aiyt-field-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.aiyt-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--aiyt-text);
}

.aiyt-req {
    color: var(--aiyt-primary);
}

.aiyt-opt {
    color: var(--aiyt-text-muted);
    font-size: 12px;
    font-weight: normal;
}

.aiyt-input,
.aiyt-textarea {
    width: 100%;
    padding: 12px 16px;
    background: var(--aiyt-input-bg);
    border: 1px solid var(--aiyt-input-border);
    border-radius: 10px;
    font-size: 14px;
    color: var(--aiyt-text);
    transition: all 0.2s ease;
    outline: none;
    font-family: inherit;
}

.aiyt-input:focus,
.aiyt-textarea:focus {
    border-color: var(--aiyt-primary);
    box-shadow: var(--aiyt-glow);
    background: var(--aiyt-bg);
}

.aiyt-textarea {
    resize: vertical;
}

.aiyt-field-error {
    font-size: 12px;
    color: #ef4444;
    font-weight: 500;
    margin-top: 2px;
}

/* Buttons */
.aiyt-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 24px;
    border: none;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
}

.aiyt-btn-primary {
    background: linear-gradient(135deg, #ff0000 0%, #d90000 100%);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(255, 0, 0, 0.3);
}

.aiyt-btn-primary:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(255, 0, 0, 0.4);
}

.aiyt-btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

.aiyt-btn-primary:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.aiyt-btn-secondary {
    background: #f1f5f9;
    color: #334155;
    padding: 8px 16px;
    font-size: 13px;
    border-radius: 8px;
    border: 1px solid #cbd5e1;
}

.aiyt-btn-secondary:hover {
    background: #e2e8f0;
    color: #0f172a;
}

/* Loading Spinner */
.aiyt-spinner {
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #ffffff;
    animation: aiyt-spin 0.8s linear infinite;
}

@keyframes aiyt-spin {
    to { transform: rotate(360deg); }
}

/* Alert Box */
.aiyt-alert {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 20px;
    padding: 14px 18px;
    border-radius: 10px;
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #991b1b;
    font-size: 14px;
    font-weight: 500;
}

/* Results Container */
.aiyt-results-container {
    margin-top: 28px;
    padding-top: 24px;
    border-top: 1px solid var(--aiyt-border);
    animation: aiyt-fadeIn 0.3s ease-out;
}

@keyframes aiyt-fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.aiyt-results-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 12px;
}

.aiyt-results-title-wrap {
    display: flex;
    align-items: center;
    gap: 10px;
}

.aiyt-results-header h3 {
    margin: 0;
    font-size: 18px;
    font-weight: 700;
}

.aiyt-tag-count-badge {
    background: #10b981;
    color: #ffffff;
    font-size: 11px;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 12px;
}

.aiyt-pills-wrap {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.aiyt-pill {
    background: #f1f5f9;
    color: #1e293b;
    border: 1px solid #e2e8f0;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.2s ease;
    cursor: default;
}

.aiyt-pill:hover {
    border-color: var(--aiyt-primary);
    color: var(--aiyt-primary);
    background: #ffffff;
}

.aiyt-sublabel {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--aiyt-text-muted);
    margin-bottom: 6px;
}

.aiyt-output-textarea {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 13px;
    line-height: 1.6;
    background: var(--aiyt-input-bg);
}

/* Toast Notification */
.aiyt-toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 99999;
    background: #0f172a;
    color: #ffffff;
    padding: 12px 20px;
    border-radius: 10px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    font-weight: 600;
    animation: aiyt-slideUp 0.3s ease-out;
}

@keyframes aiyt-slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.aiyt-toast-icon {
    color: #10b981;
}

.hidden {
    display: none !important;
}

/* Mobile Responsiveness */
@media (max-width: 600px) {
    .aiyt-container {
        padding: 20px;
        margin: 15px auto;
        border-radius: 10px;
    }

    .aiyt-title {
        font-size: 22px;
    }

    .aiyt-results-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .aiyt-btn-secondary {
        width: 100%;
        justify-content: center;
    }

    .aiyt-toast {
        left: 20px;
        right: 20px;
        bottom: 20px;
        justify-content: center;
    }
}