:root {
    /* Color palette */
    --color-primary: hsl(210, 80%, 55%);
    /* Vibrant blue */
    --color-primary-dark: hsl(210, 80%, 45%);
    --color-bg: hsl(220, 20%, 12%);
    /* Dark background */
    --color-surface: hsla(220, 20%, 20%, 0.6);
    /* Glass surface */
    --color-text: hsl(0, 0%, 95%);
    --color-muted: hsl(0, 0%, 65%);
    --color-accent: hsl(45, 90%, 55%);
    /* Warm accent */

    /* Spacing */
    --gap: 1.5rem;
    --radius: 12px;

    /* Typography */
    --font-base: 'Inter', sans-serif;
    --font-heading: 'Outfit', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-base);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--color-primary-dark);
}

/* ==== Container ==== */
.container {
    width: min(90%, 1200px);
    margin-inline: auto;
    padding-inline: var(--gap);
}

/* ==== Header ==== */
.header {
    background: var(--color-surface);
    backdrop-filter: blur(12px);
    padding: var(--gap) 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-primary);
}

.nav__list {
    display: flex;
    gap: var(--gap);
    list-style: none;
}

.nav__link {
    font-weight: 500;
    position: relative;
}

.nav__link::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -4px;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width 0.3s ease;
}

.nav__link:hover::after {
    width: 100%;
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s ease, transform 0.2s ease;
}

.btn--primary {
    background: var(--color-primary);
    color: #fff;
}

.btn--primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
}

.btn--outline {
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
    background: transparent;
}

.btn--outline:hover {
    background: var(--color-primary);
    color: #fff;
}

.btn--lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

/* ==== Hero Section ==== */
.hero {
    position: relative;
    padding: 6rem 0;
    overflow: hidden;
}

.hero__background {
    position: absolute;
    inset: 0;
    z-index: -1;
    overflow: hidden;
}

.hero__bg-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(1.1) contrast(1.1);
}

.hero__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.1), rgba(0, 0, 0, 0.3));
}

.hero__container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.hero__content {
    max-width: 600px;
    color: #fff;
}

.hero__title {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 5vw, 4rem);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.hero__subtitle {
    font-size: 1.125rem;
    margin-bottom: 2rem;
    line-height: 1.5;
}

.hero__actions {
    display: flex;
    gap: var(--gap);
}

.hero__visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero__image-placeholder {
    width: 100%;
    max-width: 400px;
}

/* ==== Glass Card ==== */
.glass-card {
    background: var(--color-surface);
    backdrop-filter: blur(16px);
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.stat-row {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-row:last-child {
    border-bottom: none;
}

.stat-row span {
    color: var(--color-muted);
}

.stat-row strong {
    color: var(--color-primary);
    font-size: 1.125rem;
}

/* ==== Section ==== */
.section {
    padding: 4rem 0;
    background: var(--color-bg);
}

.section--alt {
    background: var(--color-surface);
    backdrop-filter: blur(8px);
}

.section__title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 1rem;
    color: var(--color-primary);
}

.section__subtitle {
    font-size: 1.125rem;
    color: var(--color-muted);
    max-width: 800px;
    margin-inline: auto;
    margin-bottom: 2rem;
}

.text-center {
    text-align: center;
}

.text-muted {
    color: var(--color-muted);
}

.mt-2 {
    margin-top: 1rem;
}

/* ==== Feature Cards ==== */
.features {
    padding: 4rem 0;
    background: var(--color-bg);
}

.features__grid {
    display: grid;
    gap: var(--gap);
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.feature-card {
    background: var(--color-surface);
    backdrop-filter: blur(8px);
    border-radius: var(--radius);
    padding: var(--gap);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.3);
}

.feature-card__image img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius);
    margin-bottom: 1rem;
}

.feature-card__title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--color-primary);
}

.feature-card__text {
    font-size: 0.95rem;
    color: var(--color-muted);
}

.content-list {
    list-style: none;
    padding-left: 0;
    text-align: left;
}

.content-list li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.content-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: bold;
}

/* ==== Hardware Section ==== */
.hardware {
    padding: 4rem 0;
    background: var(--color-bg);
}

.hardware__subtitle {
    text-align: center;
    color: var(--color-muted);
    margin-bottom: 2rem;
}

.hardware__gallery {
    display: flex;
    flex-wrap: wrap;
    gap: var(--gap);
    justify-content: center;
    margin-bottom: 3rem;
}

.hardware__item {
    max-width: 600px;
}

.hardware__item img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.hardware__caption {
    text-align: center;
    margin-top: 1rem;
    font-size: 0.9rem;
    color: var(--color-muted);
}

.hardware__specs {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--gap);
}

.spec-item {
    background: var(--color-surface);
    backdrop-filter: blur(8px);
    border-radius: var(--radius);
    padding: var(--gap);
}

.spec-item h4 {
    color: var(--color-primary);
    margin-bottom: 0.5rem;
    font-family: var(--font-heading);
}

.spec-item p {
    color: var(--color-muted);
    font-size: 0.95rem;
}

/* ==== Comparison Section ==== */
.comparison {
    padding: 4rem 0;
    background: var(--color-bg);
}

.comparison__wrapper {
    display: flex;
    flex-wrap: wrap;
    gap: var(--gap);
    justify-content: space-between;
}

.comparison__col {
    flex: 1 1 45%;
    background: var(--color-surface);
    backdrop-filter: blur(8px);
    border-radius: var(--radius);
    padding: var(--gap);
}

.comparison__title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--color-primary);
}

.comparison__list {
    list-style: none;
    padding-left: 0;
}

.comparison__list li {
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.comparison__col--good .comparison__title {
    color: hsl(120, 60%, 50%);
}

.comparison__col--bad .comparison__title {
    color: hsl(0, 60%, 50%);
}

/* ==== Contact Section ==== */
.contact {
    padding: 4rem 0;
    background: var(--color-bg);
}

.contact__container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.contact__content {
    text-align: left;
}

.contact__text {
    font-size: 1rem;
    color: var(--color-muted);
    margin-bottom: var(--gap);
}

.contact__form {
    background: var(--color-surface);
    backdrop-filter: blur(8px);
    border-radius: var(--radius);
    padding: 2rem;
    display: grid;
    gap: var(--gap);
}

.form-group label {
    display: block;
    margin-bottom: 0.3rem;
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--color-muted);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.05);
    color: var(--color-text);
}

.form-group input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.btn--full {
    width: 100%;
}

/* ==== Footer ==== */
.footer {
    background: var(--color-surface);
    backdrop-filter: blur(8px);
    padding: var(--gap) 0;
    text-align: center;
    margin-top: auto;
}

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

.footer__col {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer__copy {
    color: var(--color-muted);
    font-size: 0.9rem;
}

.footer__link {
    color: var(--color-muted);
    transition: color 0.3s ease;
}

.footer__link:hover {
    color: var(--color-primary);
}

.logo--footer {
    font-size: 1.5rem;
}

/* ==== Responsive Adjustments ==== */
@media (max-width: 768px) {
    .header__container {
        flex-direction: column;
        gap: var(--gap);
    }

    .nav__list {
        flex-direction: column;
        align-items: center;
    }

    .hero {
        padding: 4rem 0;
    }

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

    .hero__content {
        max-width: 100%;
        text-align: center;
    }

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

    .comparison__col {
        flex: 1 1 100%;
    }

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

    .footer__container {
        flex-direction: column;
        text-align: center;
    }
}/* ==== Music Player ==== */
.music-player {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--color-surface);
    backdrop-filter: blur(16px);
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    z-index: 999;
    min-width: 280px;
}

.music-player__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.music-player__title {
    font-weight: 600;
    color: var(--color-primary);
    font-size: 1.1rem;
}

.music-player__toggle {
    background: var(--color-primary);
    border: none;
    border-radius: 50%;
    width: 48px;
    height: 48px;
    font-size: 1.5rem;
    cursor: pointer;
    transition: transform 0.2s ease, background 0.3s ease;
}

.music-player__toggle:hover {
    transform: scale(1.1);
    background: var(--color-primary-dark);
}

.music-player__toggle:active {
    transform: scale(0.95);
}

.music-player__controls {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.music-player__label {
    font-size: 0.9rem;
    color: var(--color-muted);
}

.music-player__slider {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: rgba(255, 255, 255, 0.1);
    outline: none;
    -webkit-appearance: none;
}

.music-player__slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--color-primary);
    cursor: pointer;
    transition: transform 0.2s ease;
}

.music-player__slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.music-player__slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--color-primary);
    cursor: pointer;
    border: none;
}

@media (max-width: 768px) {
    .music-player {
        bottom: 1rem;
        right: 1rem;
        min-width: 240px;
    }
}