/* ============================================================
   Features Page – Apple-Style Clean UI
   ============================================================ */

/* ==================== HERO SECTION ==================== */
.hero {
    padding: 2rem 0 3rem;
    text-align: center;
    position: relative;
}

.hero h1 {
    font-family: var(--font-display);
    font-size: clamp(2.25rem, 5vw, 3.25rem);
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.08;
    color: var(--primary);
    letter-spacing: -0.04em;
}

.hero p {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--gray);
    max-width: 620px;
    margin: 0 auto 2.5rem;
    line-height: 1.5;
}

/* ==================== STATS GRID ==================== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
    max-width: 800px;
    margin: 0 auto;
}

.stat-card {
    background: var(--card-bg);
    padding: 1.5rem 1rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    text-align: center;
    transition: all var(--duration-base) var(--ease-smooth);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat-number {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    color: var(--accent-blue);
    margin-bottom: 0.25rem;
    letter-spacing: -0.02em;
}

.stat-label {
    color: var(--gray);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.01em;
}

/* ==================== SECTION STYLES ==================== */
.section {
    padding: 3rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 4vw, 2.25rem);
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--primary);
    letter-spacing: -0.03em;
}

.section-subtitle {
    font-size: clamp(0.875rem, 2vw, 1.0625rem);
    color: var(--gray);
    max-width: 540px;
    margin: 0 auto;
    line-height: 1.5;
}

/* ==================== FEATURES GRID ==================== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
}

.feature-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: var(--radius-xl);
    border: 1px solid var(--border);
    transition: all var(--duration-base) var(--ease-smooth);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: var(--accent-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.25rem;
    color: white;
}

.feature-card:nth-child(2) .feature-icon {
    background: var(--accent-purple);
}

.feature-card:nth-child(3) .feature-icon {
    background: var(--accent-green);
}

.feature-card:nth-child(4) .feature-icon {
    background: var(--accent-amber);
}

.feature-icon svg {
    width: 24px;
    height: 24px;
}

.feature-card h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.feature-card p {
    color: var(--gray);
    line-height: 1.6;
    margin-bottom: 1.25rem;
    font-size: 0.875rem;
}

.feature-list {
    list-style: none;
    padding: 0;
}

.feature-list li {
    padding: 0.375rem 0;
    color: var(--gray);
    display: flex;
    align-items: flex-start;
    gap: 0.625rem;
    font-size: 0.8125rem;
}

.feature-list li svg {
    width: 16px;
    height: 16px;
    color: var(--accent-green);
    flex-shrink: 0;
    margin-top: 2px;
}

/* ==================== DO'S AND DON'TS ==================== */
.dos-donts-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.dos-donts-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: var(--radius-xl);
    border: 1px solid var(--border);
    transition: all var(--duration-base) var(--ease-smooth);
}

.dos-donts-card.dos {
    border-color: rgba(52, 199, 89, 0.2);
}

.dos-donts-card.donts {
    border-color: rgba(255, 59, 48, 0.2);
}

.dos-donts-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.dos-donts-header {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    margin-bottom: 1.25rem;
}

.dos-donts-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

.dos .dos-donts-icon {
    background: var(--accent-green);
}

.donts .dos-donts-icon {
    background: var(--accent-red);
}

.dos-donts-icon svg {
    width: 18px;
    height: 18px;
}

.dos-donts-header h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.dos-donts-list {
    list-style: none;
    padding: 0;
}

.dos-donts-list li {
    padding: 0.625rem 0;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: flex-start;
    gap: 0.625rem;
}

.dos-donts-list li:last-child {
    border-bottom: none;
}

.dos-donts-list li svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    margin-top: 2px;
}

.dos-donts-list.dos li svg {
    color: var(--accent-green);
}

.dos-donts-list.donts li svg {
    color: var(--accent-red);
}

.dos-donts-list li span {
    color: var(--gray);
    line-height: 1.5;
    font-size: 0.8125rem;
}

/* ==================== TIPS GRID ==================== */
.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
    gap: 0.75rem;
}

.tip-card {
    background: var(--card-bg);
    padding: 1.25rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    display: flex;
    gap: 0.875rem;
    transition: all var(--duration-base) var(--ease-smooth);
}

.tip-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.tip-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    background: var(--accent-amber);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

.tip-icon svg {
    width: 18px;
    height: 18px;
}

.tip-content h4 {
    font-weight: 600;
    margin-bottom: 0.25rem;
    font-size: 0.875rem;
    letter-spacing: -0.01em;
}

.tip-content p {
    color: var(--gray);
    font-size: 0.8125rem;
    line-height: 1.5;
}

/* ==================== FAQ SECTION ==================== */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    margin-bottom: 0.5rem;
    overflow: hidden;
    transition: all var(--duration-base) var(--ease-smooth);
}

.faq-item.active {
    border-color: var(--border-strong);
    box-shadow: var(--shadow-sm);
}

.faq-question {
    width: 100%;
    padding: 1rem 1.25rem;
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    font-family: inherit;
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--primary);
    text-align: left;
    letter-spacing: -0.01em;
}

.faq-question:hover {
    background: var(--background-secondary);
}

.faq-icon {
    width: 18px;
    height: 18px;
    color: var(--gray);
    transition: transform var(--duration-base) var(--ease-smooth);
    flex-shrink: 0;
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s var(--ease-smooth),
                padding 0.4s var(--ease-smooth);
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding: 0 1.25rem 1rem;
}

.faq-answer p {
    color: var(--gray);
    line-height: 1.6;
    font-size: 0.8125rem;
}

/* ==================== FLOATING CTA ==================== */
.floating-cta {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 98;
}

.floating-cta .btn {
    background: var(--accent-blue);
    color: white;
    box-shadow: var(--shadow-lg);
    white-space: nowrap;
    border-radius: var(--radius-full);
    padding: 0.75rem 1.5rem;
    font-size: 0.875rem;
}

.floating-cta .btn:hover {
    background: var(--accent-blue-hover);
    transform: scale(1.02);
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 768px) {
    .hero {
        padding: 1.5rem 0 2rem;
    }

    .section {
        padding: 2rem 0;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.5rem;
    }

    .features-grid,
    .dos-donts-grid {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }

    .tips-grid {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }

    .feature-card,
    .dos-donts-card {
        padding: 1.5rem;
    }

    .tip-card {
        flex-direction: column;
        text-align: center;
        align-items: center;
    }

    .container {
        padding-bottom: 5rem;
    }

    .floating-cta {
        bottom: 1rem;
        right: 1rem;
        left: 1rem;
    }

    .floating-cta .btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }

    .stat-card {
        padding: 1rem;
    }

    .feature-card,
    .dos-donts-card {
        padding: 1.25rem;
        border-radius: var(--radius-lg);
    }

    .faq-question {
        padding: 0.875rem 1rem;
    }

    .faq-item.active .faq-answer {
        padding: 0 1rem 0.875rem;
    }
}