/* Palette & variables */
:root {
    --bg: #0b0f17;
    --panel: #0f1720;
    --text: #e6eef8;
    --muted: #9aa6bd;
    --card: rgba(255, 255, 255, 0.04);
    --border: rgba(255, 255, 255, 0.08);
    --accent: #ff6b6b;
    --accent-2: #7ef0c5;
    --glass: rgba(255, 255, 255, 0.03);
    --radius: 12px;
    --max-w: 1000px;
    --shadow: 0 14px 36px rgba(2, 6, 23, 0.55);
    --focus: 3px solid rgba(122, 162, 247, 0.18);
    --ripple-light: rgba(255, 255, 255, 0.12);
    --ripple-dark: rgba(0, 0, 0, 0.06);
    --icon-size: 18px;
    --mobile-toggle-icon: #ffffff;
    /* default (dark theme) */
}

[data-theme="light"] {
    --bg: #f6f7fb;
    --panel: #ffffff;
    --text: #0b1020;
    --muted: #5b6474;
    --card: rgba(255, 255, 255, 0.95);
    --border: rgba(17, 19, 26, 0.06);
    --accent: #1f6feb;
    --accent-2: #17c964;
    --glass: rgba(17, 19, 26, 0.03);
    --shadow: 0 10px 26px rgba(17, 19, 26, 0.06);
    --ripple-light: rgba(255, 255, 255, 0.06);
    --ripple-dark: rgba(0, 0, 0, 0.06);
    --mobile-toggle-icon: #0b1020;
}

[data-theme="dark"] {
    --mobile-toggle-icon: #ffffff;
}

/* Reset & basics */
*,
*::before,
*::after {
    box-sizing: border-box
}

html,
body {
    height: 100%
}

body {
    margin: 0;
    font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    line-height: 1.45;
}

a {
    color: inherit;
    text-decoration: none
}

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

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0
}

.sr-only-focusable:focus {
    position: static;
    width: auto;
    height: auto;
    margin: 0;
    overflow: visible;
    clip: auto;
    white-space: normal
}

/* background blobs */
.bg-wrap {
    position: fixed;
    inset: 0;
    overflow: hidden;
    z-index: -1;
    background:
        radial-gradient(1200px 800px at 10% 10%, rgba(122, 162, 247, 0.10), transparent 60%),
        radial-gradient(1000px 700px at 90% 20%, rgba(126, 240, 197, 0.06), transparent 60%),
        radial-gradient(900px 600px at 30% 80%, rgba(255, 140, 105, 0.07), transparent 60%),
        linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(0, 0, 0, 0.12));
}

.blob {
    position: absolute;
    width: 60vmax;
    height: 60vmax;
    filter: blur(56px);
    opacity: 0.28;
    mix-blend-mode: screen;
    border-radius: 50%;
    animation: float 28s ease-in-out infinite
}

.blob.b1 {
    background: radial-gradient(circle at 30% 30%, var(--accent), transparent 60%);
    top: -12vmax;
    left: -10vmax
}

.blob.b2 {
    background: radial-gradient(circle at 70% 70%, var(--accent-2), transparent 60%);
    bottom: -16vmax;
    right: -16vmax
}

.blob.b3 {
    background: radial-gradient(circle at 50% 50%, #ff8c69, transparent 60%);
    top: 28vh;
    right: -22vmax
}

@keyframes float {

    0%,
    100% {
        transform: translate(0, 0) rotate(0) scale(1)
    }

    50% {
        transform: translate(3vmax, -2vmax) rotate(15deg) scale(1.05)
    }
}

.grid-overlay {
    position: absolute;
    inset: 0;
    background-image: linear-gradient(var(--border) 1px, transparent 1px), linear-gradient(90deg, var(--border) 1px, transparent 1px);
    background-size: 44px 44px, 44px 44px;
    mask-image: radial-gradient(circle at 50% 50%, black 40%, transparent 80%);
    pointer-events: none
}

/* layout */
header {
    position: sticky;
    top: 8px;
    padding: 8px 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 40
}

.nav-inner {
    width: 100%;
    max-width: var(--max-w);
    display: flex;
    align-items: center;
    gap: 12px
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800
}

.brand a {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: inherit
}

.brand-title {
    font-weight: 800;
    font-size: 18px
}

nav {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 10px
}

.nav-list {
    display: flex;
    gap: 6px;
    list-style: none;
    padding: 0;
    margin: 0
}

.nav-list a {
    padding: 6px 10px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 14px
}

.nav-cta {
    padding: 8px 12px;
    font-weight: 700;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: var(--panel);
    box-shadow: var(--shadow);
    border: 0
}

/* theme toggle */
.controls {
    display: flex;
    gap: 8px;
    align-items: center
}

.icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px;
    border-radius: 10px;
    background: var(--card);
    border: 1px solid var(--border);
    cursor: pointer;
    min-width: 40px;
    min-height: 40px
}

.icon-btn i {
    font-size: var(--icon-size);
    color: var(--text);
    transition: color .18s ease, transform .25s ease
}

.icon-btn:active {
    transform: translateY(1px)
}

[data-theme="light"] .icon-btn .fa-sun {
    color: #0b1020
}

[data-theme="dark"] .icon-btn .fa-moon {
    color: #ffffff
}

.icon-spin {
    transform: rotate(360deg)
}

/* mobile toggle (SVG icons) */
.mobile-toggle {
    display: none;
    /* hidden on desktop by default */
    background: var(--card);
    border: 1px solid var(--border);
    padding: 8px;
    border-radius: 10px;
    cursor: pointer;
    min-width: 44px;
    min-height: 44px;
    align-items: center;
    justify-content: center;
    transition: transform .12s ease;
}

/* SVG sizing and color via CSS variable */
.mobile-toggle svg {
    width: 18px;
    height: 18px;
    display: block
}

.mobile-toggle svg rect,
.mobile-toggle svg line,
.mobile-toggle svg path {
    fill: var(--mobile-toggle-icon);
    stroke: none;
}

.mobile-toggle .x-icon {
    display: none;
    transform-origin: center;
    transition: transform .18s ease;
}

.mobile-toggle.toggled .menu-icon {
    display: none
}

.mobile-toggle.toggled .x-icon {
    display: block;
    transform: rotate(0deg) scale(1.0)
}

@media (max-width: 880px) {
    .nav-list {
        display: none;
    }

    .mobile-toggle {
        display: inline-flex;
        margin-left: 8px;
    }
}

main {
    max-width: var(--max-w);
    margin: 28px auto;
    padding: 0 18px
}

.grid {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 20px;
    align-items: start
}

@media(max-width:880px) {
    .grid {
        grid-template-columns: 1fr
    }
}

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px;
    box-shadow: var(--shadow);
    backdrop-filter: blur(6px)
}

h1 {
    font-size: clamp(24px, 4vw, 34px);
    margin: 0 0 8px;
    font-weight: 800
}

p.lead {
    margin: 0 0 14px;
    color: var(--muted)
}

.actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 6px
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 14px;
    border-radius: 10px;
    font-weight: 700;
    border: 0;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: transform .12s ease, box-shadow .12s ease
}

.btn.primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: white;
    box-shadow: var(--shadow)
}

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

.btn:hover {
    transform: translateY(-2px)
}

.btn:active {
    transform: translateY(0) scale(.998)
}

.ripple {
    position: absolute;
    border-radius: 50%;
    transform: translate(-50%, -50%) scale(0);
    pointer-events: none;
    opacity: .45;
    animation: ripple 650ms cubic-bezier(.2, .9, .2, 1)
}

@keyframes ripple {
    to {
        transform: translate(-50%, -50%) scale(6);
        opacity: 0
    }
}

:root .ripple {
    background: var(--ripple-light)
}

[data-theme="light"] .ripple {
    background: var(--ripple-dark)
}

.socials {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 8px
}

.socials a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 10px;
    border-radius: 10px;
    background: var(--glass);
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
    font-size: 14px
}

.meta {
    font-size: 13px;
    color: var(--muted);
    margin-top: 10px
}

/* modal: flexible column + viewport-aware max heights */
.modal-backdrop {
    position: fixed;
    inset: 0;
    display: none;
    background: linear-gradient(180deg, rgba(2, 6, 23, 0.6), rgba(2, 6, 23, 0.8));
    align-items: center;
    justify-content: center;
    padding: 12px;
    z-index: 60
}

.modal {
    width: 100%;
    max-width: 900px;
    border-radius: 12px;
    overflow: hidden;
    background: var(--panel);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);

    /* keep modal within viewport height */
    max-height: calc(100vh - 32px);
    display: flex;
    flex-direction: column;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    flex: 0 0 auto;
}

.modal-body {
    /* flexible area - will scroll if content is taller than available space */
    flex: 1 1 auto;
    min-height: 220px;
    max-height: calc(100vh - 120px);
    /* header + some margin */
    overflow: auto;
}

.modal iframe {
    width: 100%;
    height: 100%;
    /* will fill modal-body */
    border: 0;
    display: block;
    min-height: 220px;
}

.modal.show {
    animation: pop .22s ease both
}

@keyframes pop {
    from {
        transform: translateY(8px) scale(.99);
        opacity: 0
    }

    to {
        transform: none;
        opacity: 1
    }
}

/* mobile landscape: give a bit more breathing room and slightly smaller max heights */
@media (max-width: 880px) and (orientation: landscape) {
    .modal {
        max-width: calc(100% - 24px);
        max-height: calc(100vh - 12px);
    }

    .modal-body {
        max-height: calc(100vh - 96px);
        min-height: 160px;
    }

    .modal iframe {
        min-height: 160px;
    }
}

footer {
    max-width: var(--max-w);
    margin: 36px auto 72px;
    padding: 0 18px;
    color: var(--muted);
    font-size: 14px
}

:focus {
    outline: none
}

:focus-visible {
    outline: var(--focus);
    outline-offset: 4px;
    border-radius: 8px
}

.skip {
    position: absolute;
    left: 8px;
    top: 8px;
    z-index: 80
}

.skip a {
    background: var(--panel);
    color: var(--text);
    padding: 8px 12px;
    border-radius: 8px;
    border: 1px solid var(--border)
}

@media (prefers-reduced-motion:reduce) {
    * {
        animation: none;
        transition: none
    }
}

@media(max-width:520px) {
    .modal-body {
        height: 55vh;
        min-height: 160px
    }
}