/*
 * RizoHomeLab landing page
 * Static site: fixed background, glass sections, clean responsive layout
 */

:root {
    --cadbury-purple: #8e44ad;
    --burnt-orange: #cc5501;
    --deep-bg: #080a1a;
    --panel-dark: rgba(8, 10, 26, 0.62);
    --panel-light: rgba(255, 238, 197, 0.28);
    --text-light: #f4f4f7;
    --text-muted: rgba(244, 244, 247, 0.76);
    --text-dark: #181818;
    --border-light: rgba(255, 255, 255, 0.14);
    --shadow-strong: 0 18px 50px rgba(0, 0, 0, 0.32);
    --shadow-soft: 0 10px 28px rgba(0, 0, 0, 0.22);
    --max-width: 1200px;
    --radius-lg: 24px;
    --radius-md: 16px;
    --transition-speed: 0.3s;
}

* {
    box-sizing: border-box;
}

*::before,
*::after {
    box-sizing: inherit;
}

html {
    min-height: 100%;
    scroll-behavior: smooth;
    scroll-padding-top: 7rem;
}

body {
    min-height: 100vh;
    margin: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Ubuntu, Roboto, sans-serif;
    color: var(--text-light);
    background:
        linear-gradient(135deg, rgba(8, 10, 26, 0.84), rgba(18, 18, 18, 0.62)),
        url('../assets/images/background.jpg') center / cover fixed no-repeat;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    background:
        radial-gradient(circle at 20% 20%, rgba(142, 68, 173, 0.24), transparent 34%),
        radial-gradient(circle at 80% 10%, rgba(204, 85, 1, 0.18), transparent 30%),
        radial-gradient(circle at 50% 100%, rgba(255, 255, 255, 0.05), transparent 35%);
    z-index: -1;
}

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

a {
    color: inherit;
}

#main-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    color: white;
    background: rgba(8, 10, 26, 0.78);
    border-bottom: 1px solid var(--border-light);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.28);
}

#main-header a {
    color: white;
    text-decoration: none;
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    width: min(var(--max-width), calc(100% - 2rem));
    margin: 0 auto;
    padding: 1rem 0;
}

.logo {
    flex: 0 0 auto;
    font-size: clamp(1.35rem, 3vw, 2rem);
    font-weight: 800;
    letter-spacing: -0.04em;
}

.menu {
    display: flex;
    gap: 0.35rem;
    align-items: center;
    max-width: 100%;
    padding: 0;
    margin: 0;
    overflow-x: auto;
    list-style: none;
    white-space: nowrap;
}

.menu::-webkit-scrollbar {
    height: 4px;
}

.menu::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.08);
}

.menu::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.28);
    border-radius: 999px;
}

.menu li a {
    display: inline-block;
    padding: 0.55rem 0.75rem;
    border-radius: 999px;
    color: rgba(255, 255, 255, 0.86);
    transition: background var(--transition-speed), transform var(--transition-speed), color var(--transition-speed);
}

.menu li a:hover,
.menu li a:focus-visible {
    color: white;
    background: rgba(255, 255, 255, 0.14);
    transform: translateY(-1px);
    outline: none;
}

.section {
    width: min(var(--max-width), calc(100% - 2rem));
    margin: 2rem auto;
    padding: 4rem 2rem;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-strong);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.section:first-of-type {
    margin-top: 0;
}

.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
}

.section > .container {
    padding: 0;
}

.dark-theme {
    color: var(--text-light);
    background: var(--panel-dark);
}

.light-theme {
    color: var(--text-dark);
    background: var(--panel-light);
}

.hero {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 88vh;
    padding-top: 8rem;
    text-align: center;
    background:
        linear-gradient(135deg, rgba(8, 10, 26, 0.66), rgba(142, 68, 173, 0.28)),
        rgba(8, 10, 26, 0.42);
}

.hero .container {
    max-width: 880px;
}

.eyebrow,
.section-label {
    margin: 0 0 0.85rem;
    color: var(--burnt-orange);
    font-size: 0.82rem;
    font-weight: 800;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.hero h1 {
    margin: 0 0 1rem;
    font-size: clamp(3rem, 9vw, 6.5rem);
    line-height: 0.95;
    letter-spacing: -0.07em;
}

.hero p:not(.eyebrow):not(.hero-tagline) {
    max-width: 760px;
    margin: 0 auto;
    color: rgba(255, 255, 255, 0.86);
    font-size: clamp(1.1rem, 2vw, 1.45rem);
    line-height: 1.65;
}

.hero-tagline {
    margin: 0 0 0.85rem;
    color: rgba(255, 255, 255, 0.92);
    font-size: clamp(1.15rem, 2vw, 1.55rem);
    font-weight: 800;
    letter-spacing: -0.02em;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0.75rem;
    max-width: 760px;
    margin: 2rem auto 0;
}

.stat-item {
    padding: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.stat-item strong,
.stat-item span {
    display: block;
}

.stat-item strong {
    color: white;
    font-size: clamp(1.1rem, 2.2vw, 1.55rem);
    line-height: 1.1;
}

.stat-item span {
    margin-top: 0.25rem;
    color: rgba(255, 255, 255, 0.72);
    font-size: 0.85rem;
}

.btn-primary,
.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0.8rem 1.15rem;
    border-radius: 999px;
    font-weight: 800;
    text-decoration: none;
    transition: transform var(--transition-speed), box-shadow var(--transition-speed), background var(--transition-speed);
}

.btn-primary {
    color: white;
    background: linear-gradient(135deg, var(--burnt-orange), var(--cadbury-purple));
    box-shadow: 0 12px 28px rgba(204, 85, 1, 0.28);
}

.btn-secondary {
    color: white;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.18);
}

.btn-primary:hover,
.btn-secondary:hover,
.btn-primary:focus-visible,
.btn-secondary:focus-visible {
    transform: translateY(-2px);
    box-shadow: var(--shadow-soft);
    outline: none;
}

h2 {
    margin: 0 0 1rem;
    font-size: clamp(2rem, 4vw, 3.4rem);
    line-height: 1;
    letter-spacing: -0.05em;
}

h3 {
    margin: 0 0 0.75rem;
    font-size: 1.15rem;
}

p {
    line-height: 1.65;
}

.section-intro {
    max-width: 820px;
    margin: 0 0 2rem;
    font-size: 1.08rem;
}

.section-image {
    position: relative;
    margin: 2rem 0;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-soft);
    background: rgba(0, 0, 0, 0.24);
}

.section-image::after {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background:
        linear-gradient(135deg, rgba(8, 10, 26, 0.14), rgba(142, 68, 173, 0.10)),
        radial-gradient(circle at 20% 10%, rgba(255, 255, 255, 0.08), transparent 32%);
    mix-blend-mode: multiply;
}

.section-image img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    filter: brightness(0.78) contrast(1.08) saturate(0.94);
    transform: scale(1.01);
    transition: transform var(--transition-speed), filter var(--transition-speed);
}

.section-image:hover img {
    filter: brightness(0.84) contrast(1.1) saturate(0.98);
    transform: scale(1.025);
}

#security .section-image img {
    aspect-ratio: 16 / 10;
    object-position: center 38%;
    filter: brightness(0.82) contrast(1.04) saturate(0.92);
}

#aiinfra .section-image img {
    object-position: center center;
}

#homelab .section-image img {
    object-position: center center;
}

.feature-grid,
.project-cards,
.metric-grid,
#aiinfra .feature-grid + .feature-grid {
    display: grid;
    gap: 1rem;
}

.feature-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.project-cards {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.metric-grid,
#aiinfra .feature-grid + .feature-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin-top: 1rem;
}

.metric-grid .card,
#aiinfra .feature-grid + .feature-grid .card {
    min-height: auto;
    padding: 1rem;
}

.metric-grid .card h3,
#aiinfra .feature-grid + .feature-grid .card h3 {
    font-size: clamp(1.35rem, 2.4vw, 2rem);
    line-height: 1;
}

.metric-grid .card p,
#aiinfra .feature-grid + .feature-grid .card p {
    font-size: 0.95rem;
}

#aiinfra .feature-grid:first-of-type {
    margin-bottom: 1rem;
}

.card {
    min-height: 100%;
    padding: clamp(1rem, 2vw, 1.35rem);
    border: 1px solid rgba(255, 255, 255, 0.13);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.09);
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.16);
    transition: transform var(--transition-speed), border-color var(--transition-speed), background var(--transition-speed);
}

.card:hover {
    transform: translateY(-6px);
    border-color: rgba(255, 255, 255, 0.24);
    background: rgba(255, 255, 255, 0.13);
}

.light-theme .card {
    background: rgba(255, 255, 255, 0.42);
    border-color: rgba(255, 255, 255, 0.28);
}

.light-theme .card:hover {
    background: rgba(255, 255, 255, 0.56);
}

.card p {
    margin: 0;
}

footer {
    width: min(var(--max-width), calc(100% - 2rem));
    margin: 2rem auto;
    padding: 1.5rem;
    color: rgba(255, 255, 255, 0.74);
    text-align: center;
    font-size: 0.92rem;
    background: rgba(8, 10, 26, 0.72);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

footer p {
    margin: 0.25rem 0;
}

.footer-note {
    color: rgba(255, 255, 255, 0.52);
    font-size: 0.82rem;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

@media (max-width: 980px) {
    .feature-grid,
    .project-cards,
    .stats-grid,
    .metric-grid,
    #aiinfra .feature-grid + .feature-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 768px) {
    html {
        scroll-padding-top: 8.5rem;
    }

    body {
        background-attachment: scroll;
    }

    .navbar {
        flex-direction: column;
        align-items: flex-start;
        padding: 0.85rem 0;
    }

    .menu {
        width: 100%;
        padding-bottom: 0.2rem;
    }

    .section {
        width: min(100% - 1rem, var(--max-width));
        margin: 1rem auto;
        padding: 2rem 1rem;
        border-radius: 18px;
    }

    .hero {
        min-height: 78vh;
        padding-top: 10rem;
    }

    .feature-grid:not(#aiinfra .feature-grid + .feature-grid),
    .project-cards {
        grid-template-columns: 1fr;
    }

    .metric-grid,
    #aiinfra .feature-grid + .feature-grid {
        grid-template-columns: 1fr 1fr;
    }

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }

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

    .section-image img {
        aspect-ratio: 4 / 3;
    }
}