/* Quick Start Section */
.quick-start {
    background: var(--bg-elevated, #111827);
    border: 1px solid var(--border-subtle, rgba(136, 146, 176, 0.15));
    border-radius: var(--radius, 8px);
    padding: 1.1rem 1.4rem;
    max-width: 960px;
    width: 100%;
    text-align: left;
}

.quick-start h3 {
    font-family: 'Clash Display', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary, #f0f4ff);
    margin-bottom: 0.85rem;
    text-align: center;
}

.quick-start-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 0.85rem;
    border-bottom: 1px solid var(--border-subtle, rgba(136, 146, 176, 0.15));
    padding-bottom: 0.55rem;
    flex-wrap: wrap;
    justify-content: center;
}

.quick-start-tab {
    background: transparent;
    border: none;
    color: var(--text-muted, #5a6480);
    font-size: 0.9rem;
    font-weight: 500;
    padding: 0.45rem 0.95rem;
    cursor: pointer;
    border-radius: var(--radius, 8px);
    transition: all 0.2s ease;
}

.quick-start-tab:hover {
    color: var(--text-secondary, #8892b0);
    background: rgba(255, 255, 255, 0.05);
}

.quick-start-tab.active {
    color: var(--cyan-bright, #00e5cc);
    background: rgba(0, 229, 204, 0.1);
}

.quick-start-panel {
    display: none;
}

.quick-start-panel.active {
    display: block;
}

.quick-start-content {
    padding-top: 0.25rem;
}

.code-block {
    background: var(--bg-deep, #050810);
    border: 1px solid var(--border-subtle, rgba(136, 146, 176, 0.15));
    border-radius: var(--radius, 8px);
    padding: 0.85rem 1rem;
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 0.8rem;
}

.code-comment {
    display: block;
    color: var(--text-muted, #5a6480);
    font-size: 0.75rem;
    margin-bottom: 0.45rem;
    line-height: 1.4;
}

.code-line {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.code-command {
    flex: 1;
    color: var(--cyan-bright, #00e5cc);
    word-break: break-all;
}

.copy-btn {
    flex-shrink: 0;
    background: transparent;
    border: 1px solid var(--border-subtle, rgba(136, 146, 176, 0.15));
    border-radius: 4px;
    padding: 0.3rem;
    cursor: pointer;
    color: var(--text-muted, #5a6480);
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.copy-btn:hover {
    color: var(--cyan-bright, #00e5cc);
    border-color: var(--cyan-bright, #00e5cc);
    background: rgba(0, 229, 204, 0.1);
}

.copy-btn.copied {
    color: var(--cyan-bright, #00e5cc);
    border-color: var(--cyan-bright, #00e5cc);
}

.copy-btn .check-icon {
    display: none;
}

.copy-btn .copy-icon {
    display: block;
}

.copy-btn.copied .check-icon {
    display: block;
}

.copy-btn.copied .copy-icon {
    display: none;
}

/* Phone AI Container and Button */
.phone-ai-container {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 0.75rem;
}

.phone-ai-btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 1.1rem 2rem;
    background: linear-gradient(90deg, #F59E0B 0%, #FB923C 50%, #EF4444 100%);
    color: white;
    font-weight: 700;
    font-size: 1rem;
    text-decoration: none;
    border-radius: 50px;
    transition: all 0.3s ease;
    overflow: visible;
    isolation: isolate;
    flex-shrink: 0;
    box-shadow:
        0 0 20px rgba(245, 158, 11, 0.4),
        0 0 40px rgba(251, 146, 60, 0.3),
        0 4px 15px rgba(0, 0, 0, 0.3);
}

.phone-ai-btn::after {
    content: "";
    position: absolute;
    inset: -4px;
    border-radius: inherit;
    background: radial-gradient(circle at center, rgba(251, 146, 60, 0.45), rgba(239, 68, 68, 0));
    filter: blur(8px);
    opacity: 0.35;
    z-index: -1;
    pointer-events: none;
    animation: quick-start-breathe 3.2s ease-in-out infinite;
}

.phone-ai-btn svg {
    flex-shrink: 0;
}

.phone-ai-btn:hover {
    transform: translateY(-2px) scale(1.01);
    box-shadow:
        0 0 30px rgba(245, 158, 11, 0.6),
        0 0 60px rgba(251, 146, 60, 0.5),
        0 6px 20px rgba(0, 0, 0, 0.4);
}

.phone-ai-btn:focus-visible {
    outline: 2px solid #F59E0B;
    outline-offset: 2px;
}

@keyframes quick-start-breathe {
    0%, 100% {
        transform: scale(0.98);
        opacity: 0.28;
    }
    50% {
        transform: scale(1.04);
        opacity: 0.48;
    }
}

@media (max-width: 768px) {
    .quick-start {
        padding: 1rem 1rem;
    }

    .quick-start-tabs {
        gap: 0.4rem;
        margin-bottom: 0.75rem;
    }

    .quick-start-tab {
        padding: 0.4rem 0.75rem;
        font-size: 0.85rem;
    }

    .phone-ai-btn {
        width: 100%;
        padding: 0.95rem 1.5rem;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .phone-ai-btn {
        font-size: 0.85rem;
        padding: 0.75rem 1.25rem;
        gap: 0.5rem;
    }
}

/* Desktop/Mobile Visibility Utilities */

/* Tab buttons - Desktop (>768px) */
.quick-start-tab.desktop-only {
    display: inline-flex !important;
    align-items: center;
}

.quick-start-tab.mobile-only {
    display: none !important;
}

/* Panels - Desktop (>768px) */
.quick-start-panel.desktop-only {
    display: none;
}

.quick-start-panel.desktop-only.active {
    display: block;
}

/* Mobile panel: always hidden on desktop */
.quick-start-panel.mobile-only {
    display: none;
}

.quick-start-panel.mobile-only.active {
    display: none;
}

/* Mobile (<= 768px) */
@media (max-width: 768px) {
    /* Tab buttons - Mobile */
    .quick-start-tab.desktop-only {
        display: none !important;
    }

    .quick-start-tab.mobile-only {
        display: inline-flex !important;
        align-items: center;
    }

    /* Panels - Mobile */
    .quick-start-panel.desktop-only {
        display: none !important;
    }

    .quick-start-panel.desktop-only.active {
        display: none !important;
    }

    .quick-start-panel.mobile-only {
        display: none;
    }

    .quick-start-panel.mobile-only.active {
        display: block !important;
    }
}

.quick-start .btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.95rem 1.65rem;
    border-radius: var(--radius, 8px);
    font-weight: 600;
    font-size: 0.9rem;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    position: relative;
    overflow: visible;
    isolation: isolate;
}

.quick-start .btn-primary {
    background: linear-gradient(135deg, var(--coral-bright, #ff4d4d), var(--coral-mid, #e63946));
    color: white;
}

.quick-start .btn-primary::after {
    content: "";
    position: absolute;
    inset: -3px;
    border-radius: inherit;
    background: radial-gradient(circle at center, rgba(255, 77, 77, 0.4), rgba(153, 27, 27, 0));
    filter: blur(7px);
    opacity: 0.25;
    z-index: -1;
    pointer-events: none;
    animation: quick-start-breathe 3.6s ease-in-out infinite;
}

.quick-start .btn-primary:hover {
    background: linear-gradient(135deg, var(--coral-mid, #e63946), var(--coral-dark, #991b1b));
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 77, 77, 0.3);
}

.mac-download {
    text-align: center;
    padding: 0.65rem 0;
}

@media (prefers-reduced-motion: reduce) {
    .phone-ai-btn::after,
    .quick-start .btn-primary::after {
        animation: none;
    }
}