/* ============================================================
   YT to MP3 Converter — Frontend Styles
   White background, black text — single clean theme
   ============================================================ */

.ytmp3-wrapper {
    --ytmp3-primary:        #e53e3e;
    --ytmp3-primary-hover:  #c53030;
    --ytmp3-bg:             #ffffff;
    --ytmp3-card-bg:        #ffffff;
    --ytmp3-card-border:    #e2e8f0;
    --ytmp3-card-shadow:    0 1px 4px rgba(0, 0, 0, 0.07);
    --ytmp3-input-bg:       #f7fafc;
    --ytmp3-input-border:   #cbd5e0;
    --ytmp3-text:           #1a202c;
    --ytmp3-text-muted:     #4a5568;
    --ytmp3-text-dim:       #718096;
    --ytmp3-success:        #276749;
    --ytmp3-error-bg:       #fff5f5;
    --ytmp3-error-border:   #feb2b2;
    --ytmp3-error-text:     #c53030;
    --ytmp3-step-num-bg:    #fff5f5;
    --ytmp3-step-num-color: #e53e3e;
    --ytmp3-divider:        #e2e8f0;
    --ytmp3-radius:         12px;
    --ytmp3-font:           -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* ---- Base Wrapper ---- */
.ytmp3-wrapper {
    font-family: var(--ytmp3-font);
    background: var(--ytmp3-bg);
    color: var(--ytmp3-text);
    padding: 32px 20px;
    border-radius: var(--ytmp3-radius);
    max-width: 680px;
    margin: 0 auto;
    box-sizing: border-box;
}

.ytmp3-wrapper *,
.ytmp3-wrapper *::before,
.ytmp3-wrapper *::after {
    box-sizing: border-box;
}

/* ---- Converter Card ---- */
.ytmp3-card {
    background: var(--ytmp3-card-bg);
    border: 1px solid var(--ytmp3-card-border);
    border-radius: var(--ytmp3-radius);
    box-shadow: var(--ytmp3-card-shadow);
    padding: 28px;
    margin-bottom: 20px;
}

/* ---- Input Group ---- */
.ytmp3-input-group {
    margin-bottom: 16px;
}

.ytmp3-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--ytmp3-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
}

.ytmp3-label svg {
    fill: var(--ytmp3-primary);
}

.ytmp3-input {
    width: 100%;
    background: var(--ytmp3-input-bg);
    border: 1px solid var(--ytmp3-input-border);
    border-radius: 8px;
    padding: 12px 16px;
    font-size: 0.95rem;
    color: var(--ytmp3-text);
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    font-family: var(--ytmp3-font);
}

.ytmp3-input::placeholder {
    color: var(--ytmp3-text-dim);
}

.ytmp3-input:focus {
    border-color: var(--ytmp3-primary);
    box-shadow: 0 0 0 3px rgba(229, 62, 62, 0.12);
    background: #ffffff;
}

/* ---- Buttons ---- */
.ytmp3-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 13px 24px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s ease, transform 0.1s ease, box-shadow 0.2s ease;
    border: none;
    text-decoration: none;
    font-family: var(--ytmp3-font);
    line-height: 1;
}

.ytmp3-btn:active {
    transform: translateY(1px);
}

.ytmp3-btn-convert {
    width: 100%;
    background: var(--ytmp3-primary);
    color: #ffffff;
}

.ytmp3-btn-convert:hover {
    background: var(--ytmp3-primary-hover);
    box-shadow: 0 4px 14px rgba(229, 62, 62, 0.3);
}

.ytmp3-btn-convert:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.ytmp3-btn-download {
    background: var(--ytmp3-primary);
    color: #ffffff;
    padding: 11px 20px;
    font-size: 0.9rem;
    margin-top: 14px;
    width: 100%;
}

.ytmp3-btn-download:hover {
    background: var(--ytmp3-primary-hover);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(229, 62, 62, 0.3);
    text-decoration: none;
}

.ytmp3-btn-text {
    background: none;
    border: none;
    color: var(--ytmp3-text-muted);
    font-size: 0.85rem;
    cursor: pointer;
    padding: 8px 0 0;
    display: block;
    width: 100%;
    text-align: center;
    font-family: var(--ytmp3-font);
    transition: color 0.2s;
}

.ytmp3-btn-text:hover {
    color: var(--ytmp3-text);
    text-decoration: underline;
}

/* ---- Loading State ---- */
.ytmp3-loading {
    text-align: center;
    padding: 24px 0 8px;
}

.ytmp3-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--ytmp3-card-border);
    border-top-color: var(--ytmp3-primary);
    border-radius: 50%;
    animation: ytmp3-spin 0.8s linear infinite;
    margin: 0 auto 14px;
}

@keyframes ytmp3-spin {
    to { transform: rotate(360deg); }
}

.ytmp3-loading-text {
    font-size: 0.95rem;
    color: var(--ytmp3-text);
    margin: 0 0 4px;
    font-weight: 500;
}

.ytmp3-loading-sub {
    font-size: 0.82rem;
    color: var(--ytmp3-text-dim);
    margin: 0;
}

/* ---- Error State ---- */
.ytmp3-error {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    background: var(--ytmp3-error-bg);
    border: 1px solid var(--ytmp3-error-border);
    border-radius: 8px;
    padding: 12px 16px;
    margin-top: 16px;
    color: var(--ytmp3-error-text);
    font-size: 0.9rem;
    line-height: 1.5;
}

.ytmp3-error svg {
    fill: var(--ytmp3-error-text);
    flex-shrink: 0;
    margin-top: 1px;
}

/* ---- Result State ---- */
.ytmp3-result {
    margin-top: 20px;
    border-top: 1px solid var(--ytmp3-divider);
    padding-top: 20px;
}

.ytmp3-result-inner {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.ytmp3-result-thumbnail {
    position: relative;
    flex-shrink: 0;
}

.ytmp3-result-thumbnail img {
    width: 120px;
    height: 68px;
    object-fit: cover;
    border-radius: 6px;
    display: block;
    border: 1px solid var(--ytmp3-card-border);
}

.ytmp3-result-badge {
    position: absolute;
    bottom: 4px;
    right: 4px;
    background: var(--ytmp3-primary);
    color: #ffffff;
    font-size: 0.65rem;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    gap: 3px;
    letter-spacing: 0.05em;
}

.ytmp3-result-badge svg {
    fill: #ffffff;
}

.ytmp3-result-info {
    flex: 1;
    min-width: 0;
}

.ytmp3-result-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--ytmp3-text);
    margin: 0 0 8px;
    line-height: 1.4;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.ytmp3-result-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 4px;
}

.ytmp3-meta-item {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.78rem;
    color: var(--ytmp3-text-muted);
}

.ytmp3-meta-item svg {
    fill: var(--ytmp3-text-dim);
}

.ytmp3-quality {
    color: var(--ytmp3-success);
    font-weight: 600;
}

.ytmp3-quality svg {
    fill: var(--ytmp3-success);
}

/* ---- How It Works Card ---- */
.ytmp3-steps-card {
    background: var(--ytmp3-card-bg);
    border: 1px solid var(--ytmp3-card-border);
    border-radius: var(--ytmp3-radius);
    box-shadow: var(--ytmp3-card-shadow);
    padding: 24px 28px;
    margin-bottom: 20px;
}

.ytmp3-steps-title {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--ytmp3-text-muted);
    text-transform: uppercase;
    margin: 0 0 20px;
}

.ytmp3-steps {
    display: flex;
    align-items: flex-start;
}

.ytmp3-step {
    flex: 1;
    text-align: center;
    padding: 0 8px;
}

.ytmp3-step-number {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--ytmp3-step-num-bg);
    color: var(--ytmp3-step-num-color);
    font-size: 0.9rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 10px;
}

.ytmp3-step-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--ytmp3-text);
    margin: 0 0 4px;
}

.ytmp3-step-desc {
    font-size: 0.78rem;
    color: var(--ytmp3-text-muted);
    margin: 0;
    line-height: 1.4;
}

.ytmp3-step-divider {
    width: 40px;
    height: 1px;
    background: var(--ytmp3-divider);
    flex-shrink: 0;
    margin-top: 18px;
}

/* ---- Disclaimer ---- */
.ytmp3-disclaimer {
    text-align: center;
    font-size: 0.78rem;
    color: var(--ytmp3-text-dim);
    line-height: 1.6;
    margin: 0;
    padding: 0 10px;
}

/* ---- Responsive ---- */
@media (max-width: 480px) {
    .ytmp3-wrapper {
        padding: 20px 12px;
    }

    .ytmp3-card,
    .ytmp3-steps-card {
        padding: 20px 16px;
    }

    .ytmp3-result-inner {
        flex-direction: column;
    }

    .ytmp3-result-thumbnail img {
        width: 100%;
        height: auto;
    }

    .ytmp3-steps {
        flex-direction: column;
        gap: 16px;
    }

    .ytmp3-step-divider {
        display: none;
    }

    .ytmp3-step {
        display: flex;
        align-items: center;
        text-align: left;
        gap: 12px;
        padding: 0;
    }

    .ytmp3-step-number {
        flex-shrink: 0;
        margin: 0;
    }

    .ytmp3-step-label {
        margin-bottom: 2px;
    }
}