:root,
[data-theme="dark"] {
    color-scheme: dark;
    --bg-deep: #14212b;
    --bg-mid: #1c2d3a;
    --bg-elevated: #223545;
    --text-primary: #ffffff;
    --accent: #89cff0;
    --accent-dim: #5a9fc4;
    --accent-on: #14212b;
    --accent-glow: rgba(137, 207, 240, 0.35);
    --muted: #9eb4c7;
    --card-bg: rgba(28, 45, 58, 0.92);
    --surface-card: linear-gradient(165deg, rgba(34, 53, 69, 0.95) 0%, rgba(20, 33, 43, 0.92) 100%);
    --surface-preview: linear-gradient(180deg, #1a2d3a 0%, var(--bg-deep) 100%);
    --header-bg: rgba(20, 33, 43, 0.88);
    --foot-bg: rgba(14, 24, 32, 0.85);
    --border-subtle: rgba(137, 207, 240, 0.18);
    --border-faint: rgba(137, 207, 240, 0.1);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-card-hover: 0 20px 48px rgba(0, 0, 0, 0.4), 0 0 32px rgba(137, 207, 240, 0.08);
    --hero-glow: rgba(137, 207, 240, 0.12);
    --body-gradient: radial-gradient(ellipse 120% 80% at 50% -20%, rgba(137, 207, 240, 0.07), transparent 55%),
        radial-gradient(ellipse at 50% 0%, var(--bg-mid) 0%, var(--bg-deep) 55%);
    --accent-soft: rgba(137, 207, 240, 0.12);
    --input-bg: var(--bg-deep);
    --radius: 14px;
    --radius-lg: 20px;
    --font: 'Inter', system-ui, sans-serif;
    --container-max: 1480px;
    --container-pad: clamp(1rem, 2.5vw, 2.5rem);
    --z-header: 100;
    --z-hologram: 150;
}

[data-theme="light"] {
    color-scheme: light;
    --bg-deep: #e8f0f6;
    --bg-mid: #f5f9fc;
    --bg-elevated: #ffffff;
    --text-primary: #14212b;
    --accent: #2b7aad;
    --accent-dim: #1e6389;
    --accent-on: #ffffff;
    --accent-glow: rgba(43, 122, 173, 0.25);
    --muted: #5a7285;
    --card-bg: rgba(255, 255, 255, 0.98);
    --surface-card: linear-gradient(165deg, #ffffff 0%, #f0f6fb 100%);
    --surface-preview: linear-gradient(180deg, #eef5fa 0%, #e3edf5 100%);
    --header-bg: rgba(255, 255, 255, 0.92);
    --foot-bg: #eef4f9;
    --border-subtle: rgba(43, 122, 173, 0.22);
    --border-faint: rgba(43, 122, 173, 0.12);
    --shadow-card: 0 8px 28px rgba(20, 33, 43, 0.08);
    --shadow-card-hover: 0 16px 40px rgba(20, 33, 43, 0.12), 0 0 24px rgba(43, 122, 173, 0.1);
    --hero-glow: rgba(43, 122, 173, 0.14);
    --body-gradient: radial-gradient(ellipse 120% 80% at 50% -20%, rgba(43, 122, 173, 0.08), transparent 55%),
        radial-gradient(ellipse at 50% 0%, var(--bg-mid) 0%, var(--bg-deep) 55%);
    --input-bg: #ffffff;
    --accent-soft: rgba(43, 122, 173, 0.12);
}

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

html {
    height: 100%;
}

body.site-shell {
    font-family: var(--font);
    background: var(--body-gradient);
    background-attachment: fixed;
    color: var(--text-primary);
    min-height: 100%;
    height: 100%;
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    transition: background 0.3s ease, color 0.3s ease;
}

.site-main {
    flex: 1 0 auto;
    width: 100%;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

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

.site-header {
    position: sticky; top: 0; z-index: var(--z-header);
    backdrop-filter: blur(16px);
    background: var(--header-bg);
    border-bottom: 1px solid var(--border-faint);
    transition: background 0.3s ease, border-color 0.3s ease;
}

.header-inner {
    display: flex; align-items: center; justify-content: space-between;
    padding: 1rem 0;
}

.brand { display: flex; flex-direction: column; line-height: 1.1; }
.brand-duo { font-weight: 700; font-size: 1.5rem; letter-spacing: 0.08em; }
.brand-sub { font-weight: 300; font-size: 0.75rem; color: var(--accent); letter-spacing: 0.35em; }

.nav { display: flex; gap: 1.5rem; align-items: center; }
.nav a { color: var(--muted); font-size: 0.95rem; }
.nav a:hover { color: var(--text-primary); text-decoration: none; }
.btn-nav {
    padding: 0.45rem 1rem;
    border: 1px solid var(--accent);
    border-radius: 999px;
    color: var(--accent) !important;
}
.btn-nav:hover { background: var(--accent-soft); }

.theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.25rem;
    height: 2.25rem;
    padding: 0;
    border: 1px solid var(--border-subtle);
    border-radius: 999px;
    background: transparent;
    color: var(--accent);
    cursor: pointer;
    font-size: 1rem;
    line-height: 1;
    transition: background 0.2s, border-color 0.2s, transform 0.2s;
}

.theme-toggle:hover {
    background: var(--accent-soft);
    transform: scale(1.05);
}

[data-theme="dark"] .theme-icon-sun { display: inline; }
[data-theme="dark"] .theme-icon-moon { display: none; }
[data-theme="light"] .theme-icon-sun { display: none; }
[data-theme="light"] .theme-icon-moon { display: inline; }

.hero {
    position: relative;
    text-align: center;
    padding: clamp(3rem, 8vw, 6rem) var(--container-pad) clamp(2.5rem, 6vw, 5rem);
    overflow: hidden;
}

.hero-glow {
    position: absolute;
    inset: -20% 10% auto;
    height: 420px;
    background: radial-gradient(ellipse, var(--hero-glow), transparent 70%);
    pointer-events: none;
}

.hero-inner {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.hero-eyebrow {
    font-size: 0.8rem;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 1rem;
    font-weight: 600;
}

.hero h1 {
    font-size: clamp(2.75rem, 7vw, 4.5rem);
    font-weight: 700;
    letter-spacing: 0.04em;
    line-height: 1.05;
}

.hero .subtitle {
    font-size: clamp(1rem, 2.5vw, 1.35rem);
    font-weight: 300;
    color: var(--accent);
    letter-spacing: 0.45em;
    margin-top: 0.35rem;
}

.hero-desc {
    max-width: 680px;
    margin: 1.5rem auto 0;
    color: var(--muted);
    font-size: clamp(1rem, 1.5vw, 1.15rem);
    line-height: 1.7;
}

.section { padding: clamp(2.5rem, 5vw, 4rem) 0; }

.section-head {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
    margin-bottom: 1.75rem;
}

.section-title {
    font-size: clamp(1.5rem, 2.5vw, 2rem);
    margin-bottom: 0;
    border-left: 4px solid var(--accent);
    padding-left: 1rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    width: 100%;
}

.section-lead {
    color: var(--muted);
    font-size: 0.95rem;
    max-width: 42rem;
    margin: 0;
    padding-left: calc(1rem + 4px);
    line-height: 1.65;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 280px), 1fr));
    gap: clamp(1rem, 2vw, 1.5rem);
    align-items: stretch;
    padding: 0.75rem 0 1.25rem;
    overflow: visible;
}

@media (min-width: 1200px) {
    .grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (min-width: 900px) and (max-width: 1199px) {
    .grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.section.container {
    overflow: visible;
}

.card {
    background: var(--card-bg);
    border: 1px solid rgba(137, 207, 240, 0.12);
    border-radius: var(--radius);
    padding: 1.5rem;
    transition: transform 0.2s, border-color 0.2s;
}

.card:hover {
    transform: translateY(-4px);
    border-color: rgba(137, 207, 240, 0.35);
}

.card h3 { margin-bottom: 0.5rem; }
.card p { color: var(--muted); font-size: 0.95rem; }

/* —— Hologram proje kartları (önizleme yukarı fırlar) —— */
.portfolio-card-slot {
    display: flex;
    flex-direction: column;
    gap: 0;
    position: relative;
    overflow: visible;
    height: 100%;
    min-height: 100%;
}

.portfolio-card-slot:has(.hologram-card.is-projected) {
    z-index: var(--z-hologram);
}

.hologram-card--live {
    margin-top: 0;
}

.hologram-card {
    position: relative;
    width: 100%;
    flex: 1;
    height: 100%;
    min-height: 100%;
    z-index: 1;
    overflow: visible;
    display: flex;
    flex-direction: column;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    transition: box-shadow 0.45s ease;
    isolation: isolate;
}

.hologram-card:hover,
.hologram-card.is-projected {
    box-shadow: var(--shadow-card-hover);
}

.hologram-card.is-projected {
    z-index: var(--z-hologram);
    isolation: auto;
}

.hologram-card .card-link {
    text-decoration: none;
    color: var(--text-primary);
    display: flex;
    flex-direction: column;
    flex: 1;
    position: relative;
    z-index: 1;
    order: 1;
    min-height: 0;
}

.hologram-card .project-card-foot {
    order: 2;
    flex-shrink: 0;
    margin-top: auto;
}

.hologram-card .card-base {
    background: var(--surface-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    border-bottom: none;
    padding: 0;
    box-shadow: none;
    backdrop-filter: blur(12px);
    transition: border-color 0.4s ease;
    position: relative;
    z-index: 1;
    overflow: hidden;
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.card-shine {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        125deg,
        transparent 40%,
        rgba(137, 207, 240, 0.06) 50%,
        transparent 60%
    );
    pointer-events: none;
    z-index: 1;
}

.card-top-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 0.6rem 0.9rem;
    border-bottom: 1px solid rgba(137, 207, 240, 0.1);
    position: relative;
    z-index: 2;
}

.card-category {
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent);
}

.card-category--muted { color: var(--muted); }

.card-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 0.25rem 0.65rem;
    border-radius: 999px;
}

.card-badge--live {
    color: #7dffb3;
    background: rgba(125, 255, 179, 0.1);
    border: 1px solid rgba(125, 255, 179, 0.35);
}

.card-badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #7dffb3;
    box-shadow: 0 0 8px #7dffb3;
    animation: pulse-dot 2s ease infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.45; }
}

.card-badge--featured {
    color: var(--accent);
    background: rgba(137, 207, 240, 0.12);
    border: 1px solid rgba(137, 207, 240, 0.3);
}

.hologram-card .image-wrapper {
    position: relative;
    margin: 0 0.75rem;
    border-radius: 12px;
    overflow: hidden;
    background: transparent;
    min-height: 140px;
    flex-shrink: 0;
}

.hologram-card .image-surface {
    position: relative;
    border-radius: 14px;
    overflow: hidden;
    background: var(--bg-deep);
    min-height: 160px;
    border: 1px solid rgba(137, 207, 240, 0.1);
}

.image-surface-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(137, 207, 240, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(137, 207, 240, 0.04) 1px, transparent 1px);
    background-size: 24px 24px;
    pointer-events: none;
    z-index: 0;
    mask-image: linear-gradient(to bottom, black, transparent 85%);
}

.hologram-card .image-surface--site {
    min-height: 170px;
    background:
        radial-gradient(ellipse at 50% 0%, var(--accent-glow), transparent 55%),
        var(--surface-preview);
}

.hologram-card .preview-fallback {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 170px;
    gap: 0.65rem;
    padding: 1rem;
    position: relative;
    z-index: 1;
}

.preview-favicon {
    border-radius: 12px;
    image-rendering: -webkit-optimize-contrast;
}

.preview-favicon--lg {
    width: 80px;
    height: 80px;
    padding: 5px;
    background: rgba(137, 207, 240, 0.1);
    box-shadow: 0 0 20px rgba(137, 207, 240, 0.18);
}

.preview-favicon-ring {
    padding: 10px;
    border-radius: 20px;
    background: linear-gradient(135deg, rgba(137, 207, 240, 0.15), rgba(137, 207, 240, 0.03));
    border: 1px solid rgba(137, 207, 240, 0.2);
    box-shadow: 0 8px 32px rgba(137, 207, 240, 0.12);
}

.preview-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.78rem;
    color: var(--muted);
    padding: 0.35rem 0.85rem;
    border-radius: 999px;
    background: rgba(137, 207, 240, 0.06);
    border: 1px solid rgba(137, 207, 240, 0.12);
}

.preview-cta-icon {
    color: var(--accent);
    font-size: 0.65rem;
}

.hologram-card .card-info {
    margin-top: 0;
    padding: 0.85rem 0.9rem 0.75rem;
    position: relative;
    z-index: 2;
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 5.5rem;
}

.card-info-head {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    justify-content: space-between;
    gap: 0.35rem 1rem;
    margin-bottom: 0.5rem;
}

.hologram-card .card-info h3 {
    margin-bottom: 0;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    line-height: 1.25;
}

.card-meta {
    font-size: 0.78rem;
    color: var(--muted);
    display: flex;
    gap: 0.5rem;
    margin: 0;
}

.card-meta-year {
    color: var(--accent-dim);
    font-weight: 600;
}

.card-summary {
    color: var(--muted);
    font-size: 0.92rem;
    line-height: 1.55;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}

.tags--card { margin-top: auto; padding-top: 0.65rem; }

.hologram-card--live.is-projected .card-base {
    border-color: rgba(137, 207, 240, 0.45);
}

.project-card-foot {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    padding: 0.65rem 0.9rem;
    border: 1px solid var(--border-subtle);
    border-top: 1px solid var(--border-faint);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    background: var(--foot-bg);
    position: relative;
    z-index: 2;
}

.hologram-card .image-surface img.card-cover {
    width: 100%;
    height: 160px;
    object-fit: contain;
    object-position: center;
    display: block;
    padding: 0.5rem;
    background: var(--bg-deep);
    transition: filter 0.45s ease;
}

.hologram-card .image-surface img.is-hidden { display: none; }

.hologram-card .image-surface--site .preview-domain {
    font-size: 1.05rem;
}

.hologram-card .preview-fallback.is-hidden { display: none; }

.card-base-glow {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 50% 100%, rgba(137, 207, 240, 0.25), transparent 70%);
    opacity: 0;
    transition: opacity 0.45s ease;
    pointer-events: none;
}

.hologram-card--live.is-projected .image-surface img.card-cover {
    filter: brightness(0.55) saturate(0.85);
}

.hologram-card--live.is-projected .image-surface--site {
    filter: brightness(0.7);
}

.hologram-card--live.is-projected .card-base-glow {
    opacity: 1;
}

.hologram-card .card-link:focus-visible .card-base {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
}

/* —— Hologram projeksiyon — tamamen kartın üstünde (2D) —— */
.hologram-projection {
    position: absolute;
    left: 50%;
    top: 0;
    width: calc(100% - 0.5rem);
    max-width: 340px;
    transform: translateX(-50%) translateY(calc(-100% - 14px)) scale(0.94);
    transform-origin: bottom center;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    z-index: 200;
    overscroll-behavior: contain;
    transition:
        transform 0.5s cubic-bezier(0.22, 1, 0.36, 1),
        opacity 0.35s ease,
        visibility 0.35s;
    filter: drop-shadow(0 24px 48px rgba(0, 0, 0, 0.55));
}

.hologram-card.is-projected .hologram-projection {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateX(-50%) translateY(calc(-100% - 6px)) scale(1);
}

/* Kart ile hologram arasındaki boşlukta hover kopmasın */
.hologram-projection::after {
    content: '';
    position: absolute;
    left: -15%;
    right: -15%;
    top: 100%;
    height: 1.75rem;
    pointer-events: auto;
}

.projection-beam {
    position: absolute;
    left: 50%;
    top: 100%;
    width: 3px;
    height: 1rem;
    margin-top: 0;
    transform: translateX(-50%);
    background: linear-gradient(to bottom, rgba(137, 207, 240, 0.85), rgba(137, 207, 240, 0.15));
    border-radius: 2px;
    opacity: 0;
    transition: opacity 0.45s ease;
    pointer-events: none;
    box-shadow: 0 0 14px rgba(137, 207, 240, 0.55);
}

.projection-frame {
    border: 1px solid rgba(137, 207, 240, 0.45);
    border-radius: 14px;
    overflow: hidden;
    background: rgba(10, 18, 28, 0.92);
    backdrop-filter: blur(14px);
    box-shadow:
        0 0 0 1px rgba(137, 207, 240, 0.1) inset,
        0 20px 50px rgba(0, 0, 0, 0.55),
        0 0 40px rgba(137, 207, 240, 0.15);
    transform-style: preserve-3d;
}

.projection-chrome {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.45rem 0.65rem;
    background: rgba(137, 207, 240, 0.08);
    border-bottom: 1px solid rgba(137, 207, 240, 0.2);
    font-size: 0.7rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--accent);
}

.projection-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: rgba(137, 207, 240, 0.35);
}

.projection-dot:first-child { background: #89cff0; }
.projection-label {
    margin-left: auto;
    font-weight: 600;
    color: var(--muted);
}

.projection-viewport {
    position: relative;
    container-type: inline-size;
    width: 100%;
    aspect-ratio: 16 / 10;
    min-height: 200px;
    max-height: 260px;
    background: var(--bg-deep);
    overflow: hidden;
    overscroll-behavior: contain;
}

.projection-viewport iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 1600px;
    height: 1000px;
    border: 0;
    transform-origin: top left;
    transform: scale(calc(100cqw / 1600px));
    background: #fff;
    z-index: 2;
    overscroll-behavior: contain;
}

.projection-cover {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
    padding: 0.5rem;
    z-index: 1;
    background: var(--bg-deep);
}

.hologram-card--live.is-projected .projection-cover {
    opacity: 0;
    pointer-events: none;
}

.projection-fallback {
    position: absolute;
    inset: 0;
    z-index: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem;
    text-align: center;
    background: linear-gradient(160deg, var(--bg-mid), var(--bg-deep));
}

.projection-hint {
    font-size: 0.75rem;
    color: var(--muted);
    max-width: 240px;
    line-height: 1.4;
    margin: 0;
}

.projection-scanlines {
    position: absolute;
    inset: 0;
    z-index: 4;
    pointer-events: none;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(137, 207, 240, 0.03) 2px,
        rgba(137, 207, 240, 0.03) 4px
    );
    opacity: 0.6;
}

.projection-glow {
    position: absolute;
    inset: 0;
    z-index: 3;
    pointer-events: none;
    background: linear-gradient(
        135deg,
        rgba(137, 207, 240, 0) 30%,
        rgba(137, 207, 240, 0.2) 50%,
        rgba(90, 159, 196, 0) 70%
    );
    opacity: 0;
    transition: opacity 0.45s ease;
}

/* Hologram aktif — beam & glow */
.hologram-card.is-projected .projection-beam {
    opacity: 1;
    pointer-events: auto;
}

.hologram-card.is-projected .projection-glow {
    opacity: 1;
}

.preview-domain {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--accent);
}

.project-preview {
    display: block;
    position: relative;
    background: var(--bg-deep);
    border-bottom: 1px solid rgba(137, 207, 240, 0.12);
    min-height: 180px;
}

.project-preview img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    object-position: top;
    display: block;
}

.project-preview img.is-hidden { display: none; }

.project-preview--large img { height: min(420px, 50vh); }

@media (prefers-reduced-motion: reduce) {
    .hologram-projection,
    .hologram-card .card-base,
    .projection-beam,
    .projection-glow {
        transition: none;
    }

    .hologram-card.is-projected .hologram-projection {
        transform: translateX(-50%) translateY(calc(-100% - 14px)) scale(1);
    }
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.82rem;
    margin-top: 0;
    border-radius: 8px;
}

.btn-accent-solid {
    background: linear-gradient(135deg, var(--accent), var(--accent-dim));
    color: var(--accent-on);
    font-weight: 600;
    border: none;
}

.btn-accent-solid:hover {
    filter: brightness(1.1);
    text-decoration: none;
}

.btn-outline {
    background: transparent;
    color: var(--accent);
    border: 1px solid rgba(137, 207, 240, 0.45);
}

.btn-outline:hover {
    background: var(--accent-soft);
    text-decoration: none;
}

.tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 0.75rem; }
.tag {
    font-size: 0.72rem;
    padding: 0.28rem 0.7rem;
    border-radius: 999px;
    background: rgba(137, 207, 240, 0.1);
    color: var(--accent);
    border: 1px solid rgba(137, 207, 240, 0.18);
    font-weight: 500;
}

.btn {
    display: inline-block;
    margin-top: 1rem;
    padding: 0.65rem 1.25rem;
    background: var(--accent);
    color: var(--accent-on);
    font-weight: 600;
    border-radius: 10px;
    border: none;
    cursor: pointer;
    transition: filter 0.2s, transform 0.2s, box-shadow 0.2s;
}
.btn:hover {
    filter: brightness(1.08);
    text-decoration: none;
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(137, 207, 240, 0.25);
}

.btn-lg {
    padding: 0.85rem 1.75rem;
    font-size: 1rem;
    border-radius: 12px;
}

.form-group { margin-bottom: 1rem; }
.form-group label { display: block; margin-bottom: 0.35rem; color: var(--muted); font-size: 0.9rem; }
.form-group input, .form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border-radius: 8px;
    border: 1px solid rgba(137, 207, 240, 0.25);
    background: var(--bg-deep);
    color: var(--text-primary);
    font-family: inherit;
}
.hp { position: absolute; left: -9999px; opacity: 0; height: 0; width: 0; overflow: hidden; }

.alert { padding: 0.75rem 1rem; border-radius: 8px; margin-bottom: 1rem; }
.alert-success { background: rgba(137, 207, 240, 0.2); border: 1px solid var(--accent); }
.alert-error { background: rgba(255, 100, 100, 0.15); border: 1px solid #ff6b6b; }

.site-footer {
    flex-shrink: 0;
    margin-top: auto;
    padding: 2rem 0;
    border-top: 1px solid rgba(137, 207, 240, 0.1);
    text-align: center;
    color: var(--muted);
    font-size: 0.9rem;
}

.footer-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
}

.footer-social {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
}

.footer-social a {
    color: var(--accent);
    font-weight: 500;
    text-decoration: none;
    padding: 0.35rem 0.75rem;
    border: 1px solid rgba(137, 207, 240, 0.25);
    border-radius: 999px;
    transition: background 0.2s, border-color 0.2s;
}

.footer-social a:hover {
    background: rgba(137, 207, 240, 0.12);
    border-color: rgba(137, 207, 240, 0.45);
    text-decoration: none;
}

.footer-contact a {
    color: var(--muted);
}

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

.footer-copy {
    margin: 0;
    font-size: 0.85rem;
    opacity: 0.85;
}

.prose { max-width: 820px; }
.prose h2 { margin: 1.5rem 0 0.75rem; color: var(--accent); }

@media (max-width: 640px) {
    .nav { gap: 0.75rem; font-size: 0.85rem; }
    .hero { padding-top: 3rem; }
}