/* ==========================================================================
   Basalt Audio — Design System
   Dark & moody. Warm amber. Late-night session energy.
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* --- Custom Properties --- */
:root {
    --bg: #0a0a0a;
    --bg-surface: #141414;
    --bg-elevated: #1a1a1a;
    --text: #e8e4df;
    --text-secondary: #8a8580;
    --accent: #c4956a;
    --accent-hover: #d4a57a;
    --accent-glow: rgba(196, 149, 106, 0.15);
    --accent-glow-strong: rgba(196, 149, 106, 0.25);
    --border: #222222;
    --border-light: #1a1a1a;
    --container-width: 1100px;
    --container-narrow: 800px;
    --nav-height: 72px;
}

/* --- Reset --- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--accent-hover);
}

/* --- Layout --- */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
}

.container--narrow {
    max-width: var(--container-narrow);
    margin: 0 auto;
    padding: 0 2rem;
}

/* --- Film Grain Overlay (global) --- */
body::after {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    background-repeat: repeat;
    background-size: 256px 256px;
}

/* ==========================================================================
   Navigation
   ========================================================================== */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 0 2rem;
    height: var(--nav-height);
    display: flex;
    align-items: center;
    transition: background-color 0.3s ease, backdrop-filter 0.3s ease;
}

.nav--scrolled {
    background-color: rgba(10, 10, 10, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.nav__inner {
    max-width: var(--container-width);
    margin: 0 auto;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav__brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--text);
}

.nav__logo {
    width: 36px;
    height: auto;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.3));
}

.nav__name {
    font-size: 1rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.nav__links {
    display: flex;
    align-items: center;
    gap: 2.5rem;
    list-style: none;
}

.nav__links a {
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s ease;
    position: relative;
}

.nav__links a:hover,
.nav__links a.active {
    color: var(--accent);
}

.nav__links a.active::after {
    content: "";
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--accent);
}

/* Mobile nav toggle */
.nav__toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    flex-direction: column;
    gap: 5px;
}

.nav__toggle span {
    display: block;
    width: 22px;
    height: 1.5px;
    background: var(--text);
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav__toggle.open span:nth-child(1) {
    transform: rotate(45deg) translate(4.5px, 4.5px);
}

.nav__toggle.open span:nth-child(2) {
    opacity: 0;
}

.nav__toggle.open span:nth-child(3) {
    transform: rotate(-45deg) translate(4.5px, -4.5px);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
}

.hero__bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-size: cover;
    background-position: center;
    z-index: -2;
}

.hero__overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        to bottom,
        rgba(10, 10, 10, 0.6) 0%,
        rgba(10, 10, 10, 0.75) 50%,
        rgba(10, 10, 10, 0.95) 100%
    );
    z-index: -1;
}

.hero__content {
    padding: 2rem;
}

.hero__logo {
    width: 120px;
    height: auto;
    margin: 0 auto 1.5rem;
    filter: drop-shadow(0 4px 12px rgba(0,0,0,0.4));
}

.hero__title {
    font-size: 4rem;
    font-weight: 300;
    letter-spacing: 0.25em;
    margin-right: -0.25em;
    text-transform: uppercase;
    color: var(--text);
    margin-bottom: 0.75rem;
}

.hero__tagline {
    font-size: 0.8rem;
    font-weight: 400;
    letter-spacing: 0.5em;
    margin-right: -0.5em;
    text-transform: uppercase;
    color: var(--text-secondary);
}

.hero__scroll {
    position: absolute;
    bottom: 2.5rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.65rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    animation: pulse 2s ease-in-out infinite;
}

.hero__scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--text-secondary), transparent);
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

/* ==========================================================================
   Page Headers (for inner pages)
   ========================================================================== */

.page-header {
    position: relative;
    padding: 10rem 0 4rem;
    text-align: center;
    overflow: hidden;
}

.page-header__bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-size: cover;
    background-position: center;
    z-index: -2;
}

.page-header__overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        to bottom,
        rgba(10, 10, 10, 0.7) 0%,
        rgba(10, 10, 10, 0.95) 100%
    );
    z-index: -1;
}

.page-header__title {
    font-size: 2.5rem;
    font-weight: 300;
    letter-spacing: 0.2em;
    margin-right: -0.2em;
    text-transform: uppercase;
    color: var(--text);
}

.page-header__subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 0.75rem;
    font-weight: 300;
}

/* ==========================================================================
   Sections
   ========================================================================== */

.section {
    padding: 6rem 0;
}

.section--surface {
    background-color: var(--bg-surface);
}

.section__label {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--accent);
    margin-bottom: 2rem;
}

.section__title {
    font-size: 2rem;
    font-weight: 300;
    letter-spacing: 0.05em;
    margin-bottom: 1.5rem;
    color: var(--text);
}

.section__text {
    font-size: 1.1rem;
    font-weight: 300;
    color: var(--text-secondary);
    max-width: 650px;
    line-height: 1.7;
}

.section__divider {
    width: 60px;
    height: 1px;
    background: var(--accent);
    margin: 3rem 0;
    opacity: 0.5;
}

/* ==========================================================================
   Service Cards
   ========================================================================== */

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.service-card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    padding: 2.5rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}

.service-card:hover {
    border-color: rgba(196, 149, 106, 0.3);
    box-shadow: 0 8px 32px var(--accent-glow);
    transform: translateY(-2px);
}

.service-card__icon {
    font-size: 1.5rem;
    margin-bottom: 1.25rem;
    display: block;
}

.service-card__title {
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 0.75rem;
    color: var(--text);
}

.service-card__text {
    font-size: 0.9rem;
    font-weight: 300;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ==========================================================================
   Expanded Service Blocks (services page)
   ========================================================================== */

.service-block {
    padding: 4rem 0;
    border-bottom: 1px solid var(--border);
}

.service-block:last-child {
    border-bottom: none;
}

.service-block__number {
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--accent);
    letter-spacing: 0.15em;
    margin-bottom: 1rem;
    text-transform: uppercase;
}

.service-block__title {
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: 1rem;
    color: var(--text);
}

.service-block__text {
    font-size: 1rem;
    font-weight: 300;
    color: var(--text-secondary);
    line-height: 1.7;
    max-width: 600px;
}

.service-block__details {
    margin-top: 1.5rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.service-block__tag {
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent);
    background: var(--accent-glow);
    padding: 0.4rem 1rem;
    border: 1px solid rgba(196, 149, 106, 0.2);
}

/* ==========================================================================
   Process Steps
   ========================================================================== */

.process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.process-step {
    text-align: center;
    position: relative;
}

.process-step__number {
    font-size: 2rem;
    font-weight: 200;
    color: var(--accent);
    margin-bottom: 0.75rem;
    display: block;
}

.process-step__title {
    font-size: 0.85rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
    color: var(--text);
}

.process-step__text {
    font-size: 0.85rem;
    font-weight: 300;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* ==========================================================================
   Photo Gallery
   ========================================================================== */

.gallery {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
}

.gallery__item {
    overflow: hidden;
    aspect-ratio: 4/3;
    position: relative;
}

.gallery__item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease, filter 0.5s ease;
    filter: brightness(0.8) saturate(0.85);
}

.gallery__item:hover img {
    transform: scale(1.05);
    filter: brightness(0.95) saturate(1);
}

.gallery__item--wide {
    grid-column: span 2;
}

/* ==========================================================================
   Gear List
   ========================================================================== */

.gear-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.gear-item {
    padding: 1.5rem;
    border: 1px solid var(--border);
    background: var(--bg-surface);
}

.gear-item__category {
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--accent);
    margin-bottom: 0.75rem;
}

.gear-item__name {
    font-size: 0.95rem;
    font-weight: 400;
    color: var(--text);
    margin-bottom: 0.25rem;
}

.gear-item__detail {
    font-size: 0.8rem;
    font-weight: 300;
    color: var(--text-secondary);
}

/* ==========================================================================
   CTA Band
   ========================================================================== */

.cta-band {
    padding: 6rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-band__title {
    font-size: 1.8rem;
    font-weight: 300;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
    color: var(--text);
}

.cta-band__text {
    font-size: 0.95rem;
    font-weight: 300;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
    display: inline-block;
    padding: 1.1rem 3rem;
    background-color: var(--accent);
    color: var(--bg);
    text-decoration: none;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
    border: none;
    cursor: pointer;
}

.btn:hover {
    transform: translateY(-2px);
    background-color: var(--accent-hover);
    box-shadow: 0 8px 24px rgba(196, 149, 106, 0.25);
    color: var(--bg);
}

.btn--outline {
    background: transparent;
    border: 1px solid var(--accent);
    color: var(--accent);
}

.btn--outline:hover {
    background: var(--accent-glow);
    color: var(--accent-hover);
}

/* ==========================================================================
   Contact
   ========================================================================== */

.contact-info {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 3rem;
    margin-top: 3rem;
}

.contact-block__label {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--accent);
    margin-bottom: 0.75rem;
}

.contact-block__value {
    font-size: 1.1rem;
    font-weight: 300;
    color: var(--text);
    line-height: 1.6;
}

.contact-block__value a {
    color: var(--text);
    border-bottom: 1px solid var(--border);
    transition: border-color 0.2s ease, color 0.2s ease;
}

.contact-block__value a:hover {
    color: var(--accent);
    border-color: var(--accent);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
    padding: 4rem 0;
    border-top: 1px solid var(--border);
}

.footer__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer__brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    text-decoration: none;
    color: var(--text-secondary);
}

.footer__logo {
    width: 24px;
    height: auto;
    opacity: 0.6;
}

.footer__name {
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.footer__links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.footer__links a {
    font-size: 0.7rem;
    font-weight: 400;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-secondary);
    transition: color 0.2s ease;
}

.footer__links a:hover {
    color: var(--accent);
}

.footer__copy {
    font-size: 0.65rem;
    color: var(--text-secondary);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    opacity: 0.6;
}

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

@media (max-width: 1024px) {
    .services-grid {
        gap: 1rem;
    }

    .gear-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .process-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --nav-height: 64px;
    }

    .nav__links {
        display: none;
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(10, 10, 10, 0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 2.5rem;
    }

    .nav__links.open {
        display: flex;
    }

    .nav__links a {
        font-size: 1rem;
        letter-spacing: 0.2em;
    }

    .nav__toggle {
        display: flex;
    }

    .hero__title {
        font-size: 2.5rem;
    }

    .hero__tagline {
        font-size: 0.7rem;
    }

    .page-header {
        padding: 8rem 0 3rem;
    }

    .page-header__title {
        font-size: 1.8rem;
    }

    .section {
        padding: 4rem 0;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .gallery {
        grid-template-columns: repeat(2, 1fr);
    }

    .gallery__item--wide {
        grid-column: span 2;
    }

    .gear-grid {
        grid-template-columns: 1fr;
    }

    .process-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

    .contact-info {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer__inner {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }

    .footer__links {
        flex-wrap: wrap;
        justify-content: center;
    }

    .cta-band__title {
        font-size: 1.4rem;
    }
}

@media (max-width: 480px) {
    .hero__title {
        font-size: 2rem;
        letter-spacing: 0.15em;
        margin-right: -0.15em;
    }

    .gallery {
        grid-template-columns: 1fr;
    }

    .gallery__item--wide {
        grid-column: span 1;
    }

    .service-card {
        padding: 2rem;
    }
}