/* ============================================
   IMI - Interactive Musical Instruments
   Main Stylesheet
   ============================================ */

/* ============================================
   RESET & BASE STYLES
   ============================================ */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: #1a1a1a;
    background: #ffffff;
}

html {
    scroll-padding-top: 0px;
    scroll-behavior: smooth;
}

/* Pull sections up higher - negative margin scrolls them closer to top */
section {
    scroll-margin-top: -30px;
}

.highlight {
    color: #4A90E2;
    font-weight: 600;
}

/* ============================================
   NAVIGATION
   ============================================ */

nav {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.75);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: #000;
    text-decoration: none;
    letter-spacing: -0.5px;
}

.logo-img {
    height: 50px;
    width: auto;
    display: block;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
}

.nav-links a {
    color: #1a1a1a;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: #4A90E2;
}

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: #1a1a1a;
    margin: 3px 0;
    transition: 0.3s;
    border-radius: 3px;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 6px);
}

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

.hamburger.active span:nth-child(3) {
    transform: rotate(45deg) translate(-5px, -6px);
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
    margin-top: 70px;
    padding: 5rem 2rem 7rem;
    background: linear-gradient(rgba(255, 255, 255, 0.85), rgba(255, 255, 255, 0.85)),
                url('../assets/hero_background.jpg') center/cover no-repeat;
    text-align: center;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 4.5rem;
    font-weight: 800;
    margin-bottom: 2rem;
    letter-spacing: -3px;
    line-height: 1.05;
}

.hero-quote {
    font-size: 3rem;
    font-style: italic;
    color: #4A90E2;
    margin-bottom: 1.5rem;
    font-weight: 400;
}

.tagline {
    font-size: 1.4rem;
    color: #666;
    margin-bottom: 4rem;
    font-weight: 300;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

/* ============================================
   VIDEO CONTAINER
   ============================================ */

.video-container {
    max-width: 1000px;
    margin: 4rem auto 2rem;
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 25px 70px rgba(0, 0, 0, 0.2);
}

.video-placeholder {
    position: relative;
    background: transparent;
    padding-bottom: 56.25%;
}

.video-iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 20px;
    border: none;
}

.play-button-overlay {
    position: absolute;
    top: 65%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 10;
}

.play-button {
    background: #4A90E2;
    color: white;
    border: none;
    padding: 1.75rem 4.5rem;
    font-size: 1.4rem;
    font-weight: 700;
    border-radius: 50px;
    cursor: pointer;
    box-shadow: 0 15px 40px rgba(74, 144, 226, 0.5);
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.play-button:hover {
    background: #3A7BC8;
    transform: scale(1.08);
    box-shadow: 0 20px 50px rgba(74, 144, 226, 0.6);
}

.play-icon {
    width: 0;
    height: 0;
    border-left: 18px solid white;
    border-top: 12px solid transparent;
    border-bottom: 12px solid transparent;
    margin-left: 5px;
}

.video-caption {
    text-align: center;
    margin-top: 1.5rem;
    font-size: 1rem;
    color: #666;
    font-style: italic;
}

/* ============================================
   PHILOSOPHY SECTION
   ============================================ */

.philosophy-section {
    padding: 7rem 2rem 7rem;
    background: #ffffff;
}

.philosophy-content {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.philosophy-section h2 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.philosophy-intro {
    font-size: 1.3rem;
    color: #666;
    max-width: 900px;
    margin: 0 auto 4rem;
    line-height: 1.8;
}

.philosophy-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

.philosophy-card {
    background: #f8f9fa;
    padding: 2.5rem;
    border-radius: 15px;
    text-align: left;
}

.philosophy-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #000;
    font-weight: 600;
}

.philosophy-card p {
    color: #666;
    line-height: 1.8;
    font-size: 1.05rem;
}

/* ============================================
   PRODUCTS SECTION
   ============================================ */

.products-section {
    padding: 7rem 2rem;
    background: #f8f9fa;
}

.products-section h2 {
    text-align: center;
    font-size: 3rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.products-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: #666;
    max-width: 1000px;
    margin: 0 auto 4rem;
    line-height: 1.8;
}

.products-grid {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
}

.product-card {
    background: #ffffff;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s, box-shadow 0.3s;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.15);
}

.product-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
    background: #e5e5e5;
}

.product-card h3 {
    font-size: 1.6rem;
    margin: 1.5rem 1.5rem 1rem;
    font-weight: 600;
}

.product-card p {
    padding: 0 1.5rem 1.5rem;
    color: #666;
    line-height: 1.7;
}

/* ============================================
   PLAYALONG SECTION
   ============================================ */

.playalong-section {
    padding: 7rem 2rem;
    background: linear-gradient(135deg, #4A90E2 0%, #357ABD 100%);
    color: white;
}

.playalong-content {
    max-width: 1000px;
    margin: 0 auto;
    text-align: center;
}

.playalong-section h2 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.playalong-tagline {
    font-size: 1.8rem;
    font-style: italic;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.playalong-description {
    font-size: 1.2rem;
    line-height: 1.9;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.feature-boxes {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
}

.feature-box {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 2rem;
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.feature-box h3 {
    font-size: 1.3rem;
    margin-bottom: 0.8rem;
    font-weight: 600;
}

.feature-box p {
    opacity: 0.9;
    line-height: 1.6;
}

/* ============================================
   TECHNOLOGY / ADVANTAGES SECTION
   ============================================ */

.tech-section {
    padding: 7rem 2rem;
    background: #ffffff;
}

.tech-content {
    max-width: 1200px;
    margin: 0 auto;
}

.tech-section h2 {
    text-align: center;
    font-size: 3rem;
    margin-bottom: 2rem;
    font-weight: 700;
}

.tech-description {
    text-align: center;
    font-size: 1.2rem;
    color: #666;
    max-width: 1000px;
    margin: 0 auto 3rem;
    line-height: 1.8;
}

/* ============================================
   MARKET OPPORTUNITIES SECTION
   ============================================ */

.markets-section {
    padding: 7rem 2rem;
    background: #f8f9fa;
}

.markets-content {
    max-width: 1200px;
    margin: 0 auto;
}

.markets-section h2 {
    text-align: center;
    font-size: 3rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.markets-intro {
    text-align: center;
    font-size: 1.2rem;
    color: #666;
    max-width: 900px;
    margin: 0 auto 4rem;
    line-height: 1.8;
}

.market-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.market-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    border: 2px solid #e5e5e5;
    transition: all 0.3s;
    cursor: pointer;
}

.market-card:hover {
    border-color: #4A90E2;
    box-shadow: 0 10px 30px rgba(74, 144, 226, 0.2);
}

.market-card.active {
    border-color: #4A90E2;
    box-shadow: 0 15px 40px rgba(74, 144, 226, 0.3);
}

.market-header {
    background: linear-gradient(135deg, #4A90E2 0%, #357ABD 100%);
    color: white;
    padding: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.market-icon {
    font-size: 2rem;
}

.market-title {
    flex: 1;
    margin-left: 1rem;
}

.market-title h3 {
    font-size: 1.5rem;
    margin: 0 0 0.3rem 0;
}

.market-title p {
    opacity: 0.9;
    font-size: 0.95rem;
    margin: 0;
}

.expand-icon {
    font-size: 1.5rem;
    transition: transform 0.3s;
}

.market-card.active .expand-icon {
    transform: rotate(180deg);
}

.bio-card.active .expand-icon {
    transform: rotate(180deg);
}

.bio-card.active .bio-content {
    max-height: 3000px;
    transition: max-height 0.5s ease-in;
}

.market-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease;
}

.market-card.active .market-content {
    max-height: 2000px;
}

.market-body {
    padding: 2rem;
}

.market-body h4 {
    color: #4A90E2;
    font-size: 1.2rem;
    margin: 1.5rem 0 1rem;
}

.market-body ul {
    margin-left: 1.5rem;
    margin-bottom: 1rem;
}

.market-body li {
    margin-bottom: 0.5rem;
    color: #666;
    line-height: 1.6;
}

/* ============================================
   CONTACT SECTION
   ============================================ */

.contact-section {
    padding: 7rem 2rem;
    background: #1a1a1a;
    color: white;
    text-align: center;
}

.contact-section h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    font-weight: 700;
}

.contact-info {
    max-width: 600px;
    margin: 0 auto;
}

.contact-info p {
    margin: 0.5rem 0;
    font-size: 1.05rem;
}

.contact-info a {
    color: #4A90E2;
    text-decoration: none;
}

.contact-info a:hover {
    text-decoration: underline;
}

/* ============================================
   FOOTER
   ============================================ */

footer {
    background: #000;
    color: #999;
    padding: 3rem 2rem;
    text-align: center;
}

footer p {
    margin: 0.5rem 0;
    font-size: 0.95rem;
}

.footer-timeline {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid #333;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

/* Tablet sizing */
@media (max-width: 1024px) and (min-width: 769px) {
    html {
        scroll-padding-top: 0px;
    }

    section {
        scroll-margin-top: -25px;
    }
}

/* Mobile sizing */
@media (max-width: 768px) {
    /* Adjust scroll padding for mobile - pull sections higher */
    html {
        scroll-padding-top: 0px;
    }

    section {
        scroll-margin-top: 40px;
    }

    /* Navigation - Mobile Menu */
    .hamburger {
        display: flex;
    }

    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.85);
        backdrop-filter: blur(20px) saturate(180%);
        -webkit-backdrop-filter: blur(20px) saturate(180%);
        flex-direction: column;
        gap: 0;
        padding: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
        border-bottom: 1px solid rgba(255, 255, 255, 0.3);
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    }

    .nav-links.active {
        max-height: 500px;
    }

    .nav-links li {
        border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    }

    .nav-links a {
        display: block;
        padding: 1rem 2rem;
        font-size: 1.1rem;
    }

    .logo-img {
        height: 40px;
    }

    /* Hero Section */
    .hero {
        padding: 2.5rem 1.5rem 3.5rem;
        background: linear-gradient(rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.9)),
                    url('../assets/hero_background.jpg') center/cover no-repeat;
    }

    .hero h1 {
        font-size: 2rem;
        letter-spacing: -1px;
        margin-bottom: 1rem;
    }

    .hero-quote {
        font-size: 1.2rem;
        margin-bottom: 1rem;
    }

    .tagline {
        font-size: 1rem;
        margin-bottom: 2rem;
    }

    /* Video */
    .video-container {
        margin: 2rem auto 1rem;
    }

    .play-button {
        padding: 1rem 2.5rem;
        font-size: 1.1rem;
    }

    .play-icon {
        border-left: 14px solid white;
        border-top: 9px solid transparent;
        border-bottom: 9px solid transparent;
    }

    /* Sections - Reduce Padding */
    .philosophy-section,
    .products-section,
    .playalong-section,
    .tech-section,
    .markets-section {
        padding: 2.5rem 1.5rem;
    }

    .philosophy-section h2,
    .products-section h2,
    .playalong-section h2,
    .tech-section h2,
    .markets-section h2 {
        font-size: 2rem;
    }

    /* Force Single Column Grids */
    .philosophy-grid,
    .products-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .feature-boxes {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .market-cards {
        grid-template-columns: 1fr;
    }

    /* PlayAlong */
    .playalong-tagline {
        font-size: 1.4rem;
    }

    .playalong-description {
        font-size: 1.1rem;
    }

    /* Contact */
    .contact-section {
        padding: 2.5rem 1.5rem;
    }

    /* Footer */
    footer {
        padding: 2rem 1.5rem;
    }
}