/* ========================================
   Responsive CSS
   ======================================== */

/* Tablet (768px - 1024px) */
@media (max-width: 1024px) {
    :root {
        --section-padding: 80px;
    }

    .nav-links {
        gap: 24px;
    }

    .nav-link {
        font-size: 14px;
    }

    .hero {
        min-height: 80vh;
    }

    .workflow-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }

    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }

    .about-grid {
        gap: 48px;
    }

    .vocaduet-card,
    .music-card {
        gap: 32px;
    }
}

/* Mobile Large (481px - 767px) */
@media (max-width: 767px) {
    :root {
        --section-padding: 60px;
    }

    /* Navigation */
    .nav-container {
        padding: 16px 20px;
    }

    .nav-links {
        position: fixed;
        top: 73px;
        left: 0;
        right: 0;
        background: rgba(10, 10, 15, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 24px;
        gap: 0;
        transform: translateY(-100%);
        opacity: 0;
        transition: var(--transition-smooth);
        pointer-events: none;
        border-bottom: 1px solid var(--color-glass-border);
    }

    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }

    .nav-link {
        padding: 16px 0;
        border-bottom: 1px solid var(--color-glass-border);
        font-size: 16px;
    }

    .nav-link::after {
        display: none;
    }

    .nav-social {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }

    /* Hero */
    .hero {
        min-height: 100vh;
        padding-top: 80px;
    }

    .hero-title-main {
        font-size: 48px;
    }

    .hero-title-sub {
        font-size: 20px;
    }

    .hero-description {
        font-size: 16px;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

    .hero-buttons .btn {
        width: 100%;
        justify-content: center;
    }

    /* Sections */
    .section-title {
        font-size: 36px;
    }

    .page-title {
        font-size: 48px;
    }

    /* Workflow */
    .workflow-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .workflow-card {
        padding: 32px 24px;
    }

    /* Pricing */
    .pricing-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .pricing-additional {
        flex-direction: column;
        gap: 24px;
    }

    /* Template */
    .template-box {
        padding: 32px 24px;
    }

    /* Notes */
    .notes-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    /* About */
    .about-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .about-achievement {
        flex-direction: column;
        text-align: center;
    }

    /* Timeline */
    .timeline-list {
        padding-left: 32px;
    }

    .timeline-item::before {
        left: -39px;
    }

    /* Vocaduet */
    .vocaduet-card {
        grid-template-columns: 1fr;
        gap: 24px;
        padding: 24px;
    }

    /* Music */
    .music-card {
        grid-template-columns: 1fr;
        gap: 24px;
        padding: 32px 24px;
    }

    /* Footer */
    .footer-content {
        flex-direction: column;
        align-items: flex-start;
        gap: 24px;
    }

    .footer-links {
        flex-direction: column;
        gap: 16px;
    }

    .footer-social {
        width: 100%;
        justify-content: center;
    }
}

/* Mobile Small (320px - 480px) */
@media (max-width: 480px) {
    :root {
        --section-padding: 48px;
    }

    .container {
        padding: 0 16px;
    }

    .nav-container {
        padding: 16px;
    }

    .nav-logo {
        font-size: 20px;
    }

    .hero-title-main {
        font-size: 36px;
    }

    .hero-title-sub {
        font-size: 16px;
    }

    .hero-description {
        font-size: 14px;
        margin-bottom: 32px;
    }

    .btn {
        padding: 14px 24px;
        font-size: 14px;
    }

    .section-title {
        font-size: 28px;
    }

    .page-title {
        font-size: 36px;
    }

    .workflow-card,
    .pricing-card {
        padding: 24px 20px;
    }

    .workflow-number {
        font-size: 36px;
    }

    .workflow-title {
        font-size: 18px;
    }

    .pricing-title {
        font-size: 20px;
    }

    .pricing-price {
        font-size: 28px;
    }

    .template-box {
        padding: 24px 20px;
    }

    .template-content h3 {
        font-size: 20px;
    }

    .template-list > li {
        font-size: 14px;
    }

    .note-item {
        padding: 20px;
        flex-direction: column;
        gap: 12px;
    }

    .note-icon {
        font-size: 20px;
    }

    .portfolio-link-box {
        padding: 48px 24px;
    }

    .portfolio-link-box h2 {
        font-size: 28px;
    }

    .about-description {
        font-size: 16px;
    }

    .achievement-number {
        font-size: 48px;
    }

    .timeline-date {
        font-size: 13px;
    }

    .timeline-content h3 {
        font-size: 18px;
    }

    .timeline-content p {
        font-size: 14px;
    }

    .year-title {
        font-size: 24px;
    }

    .vocaduet-song,
    .music-title {
        font-size: 20px;
    }

    .vocaduet-card,
    .music-card {
        padding: 20px;
    }

    .vocaduet-credits li,
    .music-credits li {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
        font-size: 13px;
    }
}

/* Landscape Mobile */
@media (max-width: 900px) and (orientation: landscape) {
    .hero {
        min-height: auto;
        padding: 120px 0 60px;
    }

    .profile-hero,
    .vocaduet-hero,
    .music-hero {
        min-height: auto;
        padding: 100px 0 60px;
    }
}

/* Very Small Devices */
@media (max-width: 360px) {
    .hero-title-main {
        font-size: 32px;
    }

    .section-title {
        font-size: 24px;
    }

    .page-title {
        font-size: 32px;
    }
}

/* High Resolution Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .hero-image,
    .profile-hero-image,
    .vocaduet-hero-bg img,
    .music-hero-bg img {
        image-rendering: -webkit-optimize-contrast;
    }
}

/* Print Styles */
@media print {
    .nav,
    .hero-bg,
    .scroll-indicator,
    .footer,
    #particleCanvas {
        display: none !important;
    }

    body {
        background: white;
        color: black;
    }

    .section {
        page-break-inside: avoid;
    }
}