/* ============================================
   M3U8 / HLS Downloader  -  m3d- prefix
   Light Default / Dark Mode
   Primary: --color-2 blue #3399cc
   ============================================ */

:root {
    --m3d-transition: 0.25s;

    --m3d-primary:        #3399cc;
    --m3d-primary-light:  #e0f2fe;
    --m3d-primary-dark:   #2980b9;

    --m3d-success:        #339966;
    --m3d-success-light:  #d1fae5;
    --m3d-warning:        #f59e0b;
    --m3d-warning-light:  #fef3c7;
    --m3d-danger:         #e64e4e;
    --m3d-danger-light:   #fee2e2;

    --m3d-bg:             #f0f9ff;
    --m3d-bg-elevated:    #ffffff;
    --m3d-bg-secondary:   #e0f2fe;
    --m3d-bg-tertiary:    #bae6fd;

    --m3d-text:           #0c4a6e;
    --m3d-text-secondary: #075985;
    --m3d-text-muted:     #6b7280;

    --m3d-border:         #bae6fd;
    --m3d-border-light:   #e0f2fe;

    --m3d-shadow-sm:      0 1px 3px rgba(0,0,0,0.08);
    --m3d-shadow-md:      0 4px 6px -1px rgba(0,0,0,0.10);
    --m3d-shadow-lg:      0 10px 15px -3px rgba(0,0,0,0.10);
    --m3d-shadow-primary: 0 4px 14px rgba(51,153,204,0.22);
    --m3d-shadow-primary-hover: 0 6px 20px rgba(51,153,204,0.32);

    --m3d-radius-sm:   6px;
    --m3d-radius-md:   12px;
    --m3d-radius-lg:   16px;
    --m3d-radius-xl:   24px;
    --m3d-radius-full: 9999px;

    --m3d-input-bg:     #ffffff;
    --m3d-input-border: #bae6fd;
}

[data-theme="dark"] {
    --m3d-primary:        #60a5fa;
    --m3d-primary-light:  rgba(96,165,250,0.15);
    --m3d-primary-dark:   #3b82f6;

    --m3d-success:        #34d399;
    --m3d-success-light:  rgba(52,211,153,0.15);
    --m3d-warning:        #fbbf24;
    --m3d-warning-light:  rgba(251,191,36,0.15);
    --m3d-danger:         #f87171;
    --m3d-danger-light:   rgba(248,113,113,0.15);

    --m3d-bg:             #0c1929;
    --m3d-bg-elevated:    #152238;
    --m3d-bg-secondary:   #1e3a5f;
    --m3d-bg-tertiary:    #264a6e;

    --m3d-text:           #e0f2fe;
    --m3d-text-secondary: #bae6fd;
    --m3d-text-muted:     #a8a8b3;

    --m3d-border:         #264a6e;
    --m3d-border-light:   #1e3a5f;

    --m3d-shadow-sm:      0 1px 3px rgba(0,0,0,0.35);
    --m3d-shadow-md:      0 4px 6px -1px rgba(0,0,0,0.45);
    --m3d-shadow-lg:      0 10px 15px -3px rgba(0,0,0,0.45);
    --m3d-shadow-primary: 0 4px 14px rgba(96,165,250,0.2);
    --m3d-shadow-primary-hover: 0 6px 20px rgba(96,165,250,0.3);

    --m3d-input-bg:     #1e3a5f;
    --m3d-input-border: #264a6e;
}

/* ─── Base ─── */

.m3d-page {
    background: var(--m3d-bg);
    color: var(--m3d-text);
    transition: background-color var(--m3d-transition), color var(--m3d-transition);
}

/* ─── Layout ─── */

.m3d-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem;
}

/* ─── Header ─── */

.m3d-tool-header {
    text-align: center;
    margin-bottom: 2rem;
}

.m3d-tool-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin: 0 0 0.75rem;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--m3d-primary);
}

.m3d-tool-title i {
    color: var(--m3d-primary);
}

.m3d-tool-description {
    max-width: 800px;
    margin: 0 auto;
    color: var(--m3d-text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
}

.m3d-tool-description a {
    color: var(--m3d-primary);
    text-decoration: none;
}

.m3d-tool-description a:hover {
    text-decoration: underline;
}

/* ─── Error ─── */

.m3d-error {
    display: none;
    align-items: flex-start;
    gap: 0.875rem;
    padding: 1rem 1.25rem;
    background: var(--m3d-danger-light);
    border-radius: var(--m3d-radius-md);
    margin-bottom: 1rem;
    border: 1px solid rgba(230,78,78,0.25);
}

.m3d-error i { color: var(--m3d-danger); flex-shrink: 0; margin-top: 2px; }

.m3d-error-body { flex: 1; }

.m3d-error-body p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--m3d-danger);
    line-height: 1.5;
}

.m3d-error-body a { color: var(--m3d-primary); text-decoration: underline; }

.m3d-error-close {
    background: none; border: none; cursor: pointer;
    color: var(--m3d-text-muted); padding: 0;
    display: flex; align-items: center;
}

.m3d-error-close:hover { color: var(--m3d-danger); }

/* ─── Input Card ─── */

.m3d-input-card {
    background: var(--m3d-bg-elevated);
    border-radius: var(--m3d-radius-lg);
    padding: 2rem;
    box-shadow: var(--m3d-shadow-md);
    margin-bottom: 1.5rem;
    border: 1px solid var(--m3d-border);
}

.m3d-input-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    font-weight: 600;
    font-size: 1.05rem;
    color: var(--m3d-text);
}

.m3d-input-header i { color: var(--m3d-primary); }

.m3d-url-wrapper {
    display: flex;
    align-items: stretch;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.m3d-url-input {
    flex: 1 1 0%;
    width: 0;
    padding: 0.875rem 1rem;
    border: 2px solid var(--m3d-input-border);
    border-radius: var(--m3d-radius-md);
    font-size: 0.95rem;
    background: var(--m3d-input-bg);
    color: var(--m3d-text);
    outline: none;
    transition: border-color var(--m3d-transition), box-shadow var(--m3d-transition);
    font-family: 'Courier New', monospace;
}

.m3d-url-input:focus {
    border-color: var(--m3d-primary);
    box-shadow: 0 0 0 3px rgba(51,153,204,0.13);
}

.m3d-url-input::placeholder {
    color: var(--m3d-text-muted);
    opacity: 0.6;
    font-family: inherit;
}

.m3d-paste-btn {
    flex: 0 0 auto;
    width: 46px;
    background: var(--m3d-bg-secondary);
    border: 2px solid var(--m3d-border);
    color: var(--m3d-text-muted);
    cursor: pointer;
    padding: 0;
    border-radius: var(--m3d-radius-md);
    transition: color var(--m3d-transition), background var(--m3d-transition), border-color var(--m3d-transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.m3d-paste-btn:hover {
    color: var(--m3d-primary);
    background: var(--m3d-primary-light);
    border-color: var(--m3d-primary);
}

/* Options grid */
.m3d-options-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1rem;
}

.m3d-option label {
    display: block;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--m3d-text-muted);
    margin-bottom: 0.375rem;
}

.m3d-option select,
.m3d-option input[type="text"] {
    width: 100%;
    padding: 0.625rem 0.875rem;
    border: 2px solid var(--m3d-input-border);
    border-radius: var(--m3d-radius-sm);
    background: var(--m3d-input-bg);
    color: var(--m3d-text);
    font-size: 0.9rem;
    cursor: pointer;
    outline: none;
    transition: border-color var(--m3d-transition);
}

.m3d-option select:focus,
.m3d-option input[type="text"]:focus {
    border-color: var(--m3d-primary);
}

/* ─── Buttons ─── */

.m3d-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--m3d-radius-md);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--m3d-transition);
    text-decoration: none;
}

.m3d-btn-primary {
    background: var(--m3d-primary);
    color: #ffffff;
    box-shadow: var(--m3d-shadow-primary);
    width: 100%;
}

.m3d-btn-primary:hover {
    background: var(--m3d-primary-dark);
    box-shadow: var(--m3d-shadow-primary-hover);
    transform: translateY(-1px);
}

.m3d-btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.m3d-btn-secondary {
    background: var(--m3d-bg-secondary);
    color: var(--m3d-text);
    border: 1px solid var(--m3d-border);
}

.m3d-btn-secondary:hover { background: var(--m3d-bg-tertiary); }

.m3d-btn-download {
    background: var(--m3d-success);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(51,153,102,0.25);
}

.m3d-btn-download:hover {
    filter: brightness(1.1);
    transform: translateY(-1px);
}

.m3d-btn-download:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.m3d-btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
}

/* New URL pill */
.m3d-btn-new {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.5rem 1rem;
    background: var(--m3d-bg-secondary);
    border: 1px solid var(--m3d-border);
    border-radius: var(--m3d-radius-full);
    font-size: 0.85rem;
    color: var(--m3d-text);
    cursor: pointer;
    transition: all var(--m3d-transition);
}

.m3d-btn-new:hover {
    border-color: var(--m3d-primary);
    color: var(--m3d-primary);
}

/* ─── Loading ─── */

.m3d-loading {
    display: none;
    text-align: center;
    padding: 3rem 1rem;
    background: var(--m3d-bg-elevated);
    border-radius: var(--m3d-radius-lg);
    box-shadow: var(--m3d-shadow-md);
    margin-bottom: 1.5rem;
    border: 1px solid var(--m3d-border);
}

.m3d-spinner {
    width: 44px;
    height: 44px;
    border: 3px solid var(--m3d-bg-secondary);
    border-top-color: var(--m3d-primary);
    border-radius: 50%;
    animation: m3d-spin 0.8s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes m3d-spin { to { transform: rotate(360deg); } }

.m3d-loading-text {
    font-weight: 600;
    color: var(--m3d-text);
    margin: 0 0 0.25rem;
}

.m3d-loading-sub {
    font-size: 0.875rem;
    color: var(--m3d-text-muted);
    margin: 0 0 1.25rem;
}

/* Progress bar */
.m3d-progress-bar-wrap {
    display: none;
    max-width: 400px;
    margin: 0 auto;
}

.m3d-progress-track {
    height: 6px;
    background: var(--m3d-bg-secondary);
    border-radius: var(--m3d-radius-full);
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.m3d-progress-fill {
    height: 100%;
    background: var(--m3d-primary);
    border-radius: var(--m3d-radius-full);
    width: 0%;
    transition: width 0.4s ease;
}

.m3d-progress-label {
    font-size: 0.8rem;
    color: var(--m3d-text-muted);
    text-align: center;
}

/* ─── Analysis Result ─── */

.m3d-analysis {
    display: none;
    background: var(--m3d-bg-elevated);
    border-radius: var(--m3d-radius-lg);
    padding: 2rem;
    box-shadow: var(--m3d-shadow-md);
    margin-bottom: 1.5rem;
    border: 1px solid var(--m3d-border);
}

.m3d-analysis-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.25rem;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.m3d-analysis-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    font-size: 1.05rem;
    color: var(--m3d-text);
}

.m3d-analysis-title i { color: var(--m3d-primary); }

/* Stream info chips */
.m3d-stream-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.625rem;
    margin-bottom: 1.25rem;
}

.m3d-meta-chip {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.8rem;
    color: var(--m3d-text-muted);
    background: var(--m3d-bg-secondary);
    padding: 0.3rem 0.7rem;
    border-radius: var(--m3d-radius-full);
}

.m3d-meta-chip i {
    width: 13px;
    height: 13px;
    color: var(--m3d-primary);
}

.m3d-meta-chip.live {
    background: var(--m3d-danger-light);
    color: var(--m3d-danger);
}

.m3d-meta-chip.live i { color: var(--m3d-danger); }

/* Warning box */
.m3d-warning-box {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.875rem 1rem;
    background: var(--m3d-warning-light);
    border-radius: var(--m3d-radius-md);
    margin-bottom: 1.25rem;
    font-size: 0.875rem;
    color: var(--m3d-warning);
}

.m3d-warning-box i { flex-shrink: 0; margin-top: 1px; }

/* Download options panel */
.m3d-dl-options {
    background: var(--m3d-bg-secondary);
    border-radius: var(--m3d-radius-md);
    padding: 1.25rem;
    margin-bottom: 1.25rem;
}

.m3d-dl-options-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--m3d-text);
    margin-bottom: 1rem;
}

.m3d-dl-options-title i { color: var(--m3d-primary); }

.m3d-dl-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 0.875rem;
}

.m3d-dl-option label {
    display: block;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--m3d-text-muted);
    margin-bottom: 0.3rem;
}

.m3d-dl-option select,
.m3d-dl-option input[type="text"] {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 2px solid var(--m3d-border);
    border-radius: var(--m3d-radius-sm);
    background: var(--m3d-input-bg);
    color: var(--m3d-text);
    font-size: 0.875rem;
    outline: none;
    transition: border-color var(--m3d-transition);
}

.m3d-dl-option select:focus,
.m3d-dl-option input[type="text"]:focus {
    border-color: var(--m3d-primary);
}

/* Download bar */
.m3d-download-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.m3d-dl-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--m3d-text-muted);
}

.m3d-dl-info i { color: var(--m3d-primary); }

/* Success */
.m3d-success-badge {
    display: none;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1.25rem;
    background: var(--m3d-success-light);
    border-radius: var(--m3d-radius-md);
    margin-bottom: 1rem;
    color: var(--m3d-success);
    font-weight: 500;
    font-size: 0.9rem;
    border: 1px solid rgba(51,153,102,0.25);
}

.m3d-success-badge i { flex-shrink: 0; }

/* ─── Related ─── */

.m3d-related {
    max-width: 900px;
    margin: 0 auto 2rem;
    padding: 0 2rem;
}

.m3d-related-box {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem;
    background: var(--m3d-bg-elevated);
    border-radius: var(--m3d-radius-lg);
    box-shadow: var(--m3d-shadow-sm);
    border: 1px solid var(--m3d-border);
}

.m3d-related-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
    color: var(--m3d-text-muted);
    white-space: nowrap;
}

.m3d-related-label i { color: var(--m3d-primary); }

.m3d-related-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.m3d-related-link {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.5rem 0.875rem;
    background: var(--m3d-bg-secondary);
    border-radius: var(--m3d-radius-full);
    color: var(--m3d-text);
    text-decoration: none;
    font-size: 0.875rem;
    transition: all var(--m3d-transition);
}

.m3d-related-link:hover {
    background: var(--m3d-primary-light);
    color: var(--m3d-primary);
}

.m3d-related-link i { width: 16px; height: 16px; }

/* ─── Info Sections ─── */

.m3d-info-sections {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 2rem 2rem;
}

.m3d-info-card {
    background: var(--m3d-bg-elevated);
    border-radius: var(--m3d-radius-xl);
    padding: 2rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--m3d-shadow-md);
    border: 1px solid var(--m3d-border);
}

.m3d-info-card h2 {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--m3d-text);
    margin: 0 0 1.25rem;
}

.m3d-info-card h2 i { color: var(--m3d-primary); }

.m3d-info-card p,
.m3d-info-card li {
    color: var(--m3d-text-muted);
    line-height: 1.7;
    margin: 0 0 0.75rem;
}

.m3d-info-card a { color: var(--m3d-primary); text-decoration: none; }
.m3d-info-card a:hover { text-decoration: underline; }

/* Steps */
.m3d-steps {
    counter-reset: m3d-step;
    list-style: none;
    padding: 0;
    margin: 0 0 1rem;
}

.m3d-steps li {
    position: relative;
    padding-left: 3rem;
    margin-bottom: 1rem;
    counter-increment: m3d-step;
    color: var(--m3d-text-muted);
    line-height: 1.6;
}

.m3d-steps li::before {
    content: counter(m3d-step);
    position: absolute;
    left: 0;
    top: 0;
    width: 28px;
    height: 28px;
    background: var(--m3d-primary);
    color: #ffffff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    font-weight: 600;
}

.m3d-steps li strong { color: var(--m3d-text); }

/* Features grid */
.m3d-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.25rem;
}

.m3d-feature-item {
    padding: 1.25rem;
    background: var(--m3d-bg-secondary);
    border-radius: var(--m3d-radius-md);
}

.m3d-feature-item i { color: var(--m3d-primary); margin-bottom: 0.75rem; display: block; }
.m3d-feature-item h4 { margin: 0 0 0.375rem; font-size: 0.95rem; font-weight: 600; color: var(--m3d-text); }
.m3d-feature-item p { font-size: 0.85rem; margin: 0; line-height: 1.5; }

/* FAQ */
.m3d-faq-list { display: flex; flex-direction: column; gap: 0.5rem; }

.m3d-faq-item {
    background: var(--m3d-bg-secondary);
    border-radius: var(--m3d-radius-md);
    overflow: hidden;
}

.m3d-faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.25rem;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--m3d-text);
    text-align: left;
    transition: background-color var(--m3d-transition);
}

.m3d-faq-question:hover { background: var(--m3d-bg-tertiary); }
.m3d-faq-question i { color: var(--m3d-text-muted); transition: transform 0.3s; flex-shrink: 0; }
.m3d-faq-item.open .m3d-faq-question i { transform: rotate(180deg); }
.m3d-faq-answer { display: none; padding: 0 1.25rem 1rem; }
.m3d-faq-item.open .m3d-faq-answer { display: block; }
.m3d-faq-answer p { font-size: 0.9rem; margin: 0; color: var(--m3d-text-muted); line-height: 1.6; }
.m3d-faq-answer a { color: var(--m3d-primary); text-decoration: none; }
.m3d-faq-answer a:hover { text-decoration: underline; }

/* ─── Responsive ─── */

@media (max-width: 768px) {
    .m3d-container { padding: 1rem; }
    .m3d-tool-title { font-size: 1.35rem; }
    .m3d-input-card { padding: 1.25rem; }
    .m3d-options-grid { grid-template-columns: 1fr; }
    .m3d-dl-grid { grid-template-columns: 1fr; }
    .m3d-download-bar { flex-direction: column; align-items: stretch; }
    .m3d-features-grid { grid-template-columns: 1fr; }
    .m3d-related { padding: 0 1rem; }
    .m3d-info-sections { padding: 0 1rem 1rem; }
    .m3d-info-card { padding: 1.25rem; }
}