/* ============================================================
   KERMINAL OS — Kevin Nyawakira portfolio
   A quiet hacker operating system: boot → desktop → windows.
   Dark by default. Light mode keeps terminals dark.
   ============================================================ */

:root {
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, monospace;

    /* dark (default) */
    --bg: #070b09;
    --bg-2: #0a100d;
    --surface: #0e1511;
    --surface-2: #131c16;
    --win-bg: rgba(13, 19, 16, 0.92);
    --win-bar: rgba(255, 255, 255, 0.03);
    --border: rgba(125, 200, 165, 0.14);
    --border-strong: rgba(125, 200, 165, 0.32);
    --text: #e8f0ec;
    --text-muted: #97a8a0;
    --text-faint: #5d6e66;
    --accent: #3ddc97;
    --accent-2: #57c7ff;
    --accent-dim: rgba(61, 220, 151, 0.12);
    --accent-glow: rgba(61, 220, 151, 0.25);
    --danger: #ff6b6b;
    --warn: #f5c452;
    --rain-color: 61, 220, 151;
    --rain-alpha: 0.26;
    --grid-line: rgba(125, 200, 165, 0.035);
    --shadow: 0 24px 70px rgba(0, 0, 0, 0.55);
    --term-bg: #0a0f0c;
    --sb-bg: #0c1410;
    --selection: rgba(61, 220, 151, 0.25);
}

[data-theme="light"] {
    --bg: #eef1ee;
    --bg-2: #e6ebe6;
    --surface: #ffffff;
    --surface-2: #f2f5f2;
    --win-bg: rgba(255, 255, 255, 0.94);
    --win-bar: rgba(0, 0, 0, 0.025);
    --border: rgba(20, 80, 55, 0.16);
    --border-strong: rgba(20, 80, 55, 0.34);
    --text: #15211b;
    --text-muted: #4f615a;
    --text-faint: #8a9a91;
    --accent: #0c8a5a;
    --accent-2: #0d6fa8;
    --accent-dim: rgba(12, 138, 90, 0.1);
    --accent-glow: rgba(12, 138, 90, 0.18);
    --rain-color: 12, 138, 90;
    --rain-alpha: 0.10;
    --grid-line: rgba(20, 80, 55, 0.05);
    --shadow: 0 24px 60px rgba(25, 55, 42, 0.18);
    --term-bg: #0c1410;
    --sb-bg: #dde4dd;
    --selection: rgba(12, 138, 90, 0.18);
}

/* ---------- base ---------- */

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

html, body { height: 100%; }

body {
    margin: 0;
    font-family: var(--font-sans);
    font-size: 15px;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg);
    overflow: hidden;
    transition: background-color .35s ease, color .35s ease;
}

::selection { background: var(--selection); }

img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration: none; }
h1, h2, h3, h4 { margin: 0; line-height: 1.2; letter-spacing: -0.015em; }
button { font: inherit; color: inherit; }

.mono { font-family: var(--font-mono); }

/* ---------- boot screen ---------- */

#boot {
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: #060a08;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity .45s ease;
}
#boot.done { opacity: 0; pointer-events: none; }
#boot.hidden { display: none; }

.boot-inner { width: min(640px, 92vw); }

.boot-logo {
    color: #3ddc97;
    font-family: var(--font-mono);
    font-size: clamp(4px, 1.45vw, 9px);
    line-height: 1.25;
    margin: 0 0 1.6rem;
    text-shadow: 0 0 24px rgba(61, 220, 151, 0.35);
    user-select: none;
}

.boot-lines {
    font-family: var(--font-mono);
    font-size: .78rem;
    color: #8fa39a;
    min-height: 7.2em;
}
.boot-lines .ok { color: #3ddc97; }
.boot-lines p { margin: 0 0 .15rem; }

.boot-bar {
    height: 3px;
    background: rgba(61, 220, 151, 0.12);
    border-radius: 3px;
    margin-top: 1.2rem;
    overflow: hidden;
}
.boot-fill {
    height: 100%;
    width: 0%;
    background: #3ddc97;
    border-radius: 3px;
    transition: width .18s ease;
}

.boot-skip {
    margin-top: 1.4rem;
    font-family: var(--font-mono);
    font-size: .68rem;
    color: #44544c;
    text-align: center;
    animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse { 50% { opacity: .35; } }

/* ---------- desktop ---------- */

#desktop {
    position: fixed;
    inset: 0 0 34px 0;
    overflow: hidden;
    background:
        radial-gradient(1100px 700px at 75% -10%, var(--accent-dim), transparent 60%),
        var(--bg);
    transition: background-color .35s ease;
}

#rain {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.wallpaper-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(var(--grid-line) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
    background-size: 44px 44px;
    -webkit-mask-image: radial-gradient(ellipse at 50% 40%, black 30%, transparent 85%);
    mask-image: radial-gradient(ellipse at 50% 40%, black 30%, transparent 85%);
    pointer-events: none;
}

.desktop-brand {
    position: absolute;
    top: 22px;
    left: 26px;
    user-select: none;
    pointer-events: none;
}
.db-name {
    display: block;
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: .95rem;
    letter-spacing: .35em;
    color: var(--text-faint);
}
.db-sub {
    display: block;
    margin-top: .2rem;
    font-family: var(--font-mono);
    font-size: .66rem;
    letter-spacing: .08em;
    color: var(--text-faint);
    opacity: .7;
}

/* desktop icons */

.desktop-icons {
    position: absolute;
    top: 22px;
    right: 22px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.dicon {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: .45rem;
    width: 92px;
    padding: .8rem .4rem .7rem;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 10px;
    color: var(--text-muted);
    cursor: pointer;
    transition: background-color .2s ease, border-color .2s ease, color .2s ease;
}
.dicon:hover {
    background: var(--accent-dim);
    border-color: var(--border);
    color: var(--text);
}
.dicon svg { color: var(--accent); }
.dicon span {
    font-family: var(--font-mono);
    font-size: .68rem;
}

/* ---------- windows ---------- */

.win {
    position: absolute;
    display: flex;
    flex-direction: column;
    min-width: 320px;
    min-height: 180px;
    background: var(--win-bg);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: var(--shadow);
    overflow: hidden;
    opacity: 0;
    transform: scale(.96) translateY(8px);
    transition: opacity .22s ease, transform .22s cubic-bezier(.2, .9, .3, 1.2),
                border-color .2s ease, background-color .35s ease;
}
.win.shown { opacity: 1; transform: none; }
.win.closing { opacity: 0; transform: scale(.96) translateY(8px); }
.win.active { border-color: var(--border-strong); }
.win.dragging { transition: none; }
.win.maxed {
    inset: 10px !important;
    width: auto !important;
    height: auto !important;
    border-radius: 10px;
}

.win-bar {
    display: flex;
    align-items: center;
    gap: .5rem;
    padding: 0 .9rem;
    height: 38px;
    flex-shrink: 0;
    background: var(--win-bar);
    border-bottom: 1px solid var(--border);
    cursor: grab;
    user-select: none;
}
.win.maxed .win-bar { cursor: default; }
.win-bar:active { cursor: grabbing; }

.tl { display: flex; gap: 7px; }
.tl button {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: none;
    padding: 0;
    cursor: pointer;
    opacity: .9;
    transition: opacity .15s ease, transform .15s ease;
}
.tl button:hover { opacity: 1; transform: scale(1.15); }
.tl .t-close { background: #ff5f57; }
.tl .t-min { background: #febc2e; }
.tl .t-max { background: #28c840; }

.win-title {
    flex: 1;
    text-align: center;
    font-family: var(--font-mono);
    font-size: .74rem;
    color: var(--text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    /* balance traffic lights */
    margin-right: 50px;
}

.win-body {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 1.4rem 1.6rem 1.6rem;
    overscroll-behavior: contain;
}
.win-body::-webkit-scrollbar { width: 9px; }
.win-body::-webkit-scrollbar-thumb {
    background: var(--border-strong);
    border-radius: 6px;
    border: 2px solid transparent;
    background-clip: content-box;
}
.win-body::-webkit-scrollbar-track { background: transparent; }

/* ---------- terminal app ---------- */

.win-terminal .win-body {
    padding: 0;
    background: var(--term-bg);
    display: flex;
    flex-direction: column;
}
.win-terminal .win-bar { background: rgba(255, 255, 255, 0.03); }

.term-scroll {
    flex: 1;
    overflow-y: auto;
    padding: 1rem 1.1rem 1.2rem;
    font-family: var(--font-mono);
    font-size: .8rem;
    line-height: 1.7;
    color: #c9d7d0;
    cursor: text;
}
.term-scroll::-webkit-scrollbar { width: 9px; }
.term-scroll::-webkit-scrollbar-thumb {
    background: rgba(125, 200, 165, 0.25);
    border-radius: 6px;
    border: 2px solid transparent;
    background-clip: content-box;
}

.t-line { margin: 0; white-space: pre-wrap; word-break: break-word; }
.t-muted { color: #71837b; }
.t-ok { color: #3ddc97; }
.t-err { color: #ff7b72; }
.t-warn { color: #f5c452; }
.t-cyan { color: #57c7ff; }
.t-link { color: #57c7ff; text-decoration: underline; text-underline-offset: 3px; }
.t-link:hover { color: #8fd9ff; }

.t-prompt-user { color: #3ddc97; font-weight: 600; }
.t-prompt-sep { color: #71837b; }
.t-prompt-path { color: #57c7ff; }
.t-prompt-sign { color: #c9d7d0; margin-right: .5em; }

.t-input-line { display: flex; align-items: baseline; }
.t-input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: #e8f0ec;
    font-family: var(--font-mono);
    font-size: inherit;
    line-height: inherit;
    padding: 0;
    caret-color: #3ddc97;
}

.t-chips { display: flex; flex-wrap: wrap; gap: .4rem; margin: .5rem 0 .3rem; }
.t-chip {
    font-family: var(--font-mono);
    font-size: .7rem;
    color: #3ddc97;
    background: rgba(61, 220, 151, 0.1);
    border: 1px solid rgba(61, 220, 151, 0.25);
    border-radius: 6px;
    padding: .18rem .55rem;
    cursor: pointer;
    transition: background-color .15s ease;
}
.t-chip:hover { background: rgba(61, 220, 151, 0.2); }

/* ascii skill bars inside terminal */
.t-bar-row { display: flex; gap: .8em; }
.t-bar-name { width: 14ch; color: #c9d7d0; flex-shrink: 0; }
.t-bar-track { color: #3ddc97; letter-spacing: .05em; }
.t-bar-track .dimmed { color: rgba(61, 220, 151, 0.2); }

/* ---------- generic app content ---------- */

.app-h {
    font-family: var(--font-mono);
    font-size: .72rem;
    color: var(--accent);
    margin: 0 0 .4rem;
}
.app-title { font-size: 1.45rem; font-weight: 800; margin-bottom: 1.1rem; }

/* about */
.about-row { display: flex; gap: 1.4rem; align-items: flex-start; }
.about-pic {
    width: 132px;
    flex-shrink: 0;
    border-radius: 10px;
    border: 1px solid var(--border-strong);
}
.about-row p { margin: 0 0 .85rem; color: var(--text-muted); font-size: .92rem; }
.about-row strong { color: var(--text); }

.stat-row { display: flex; gap: .7rem; margin-top: 1.2rem; flex-wrap: wrap; }
.stat-box {
    flex: 1;
    min-width: 110px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--surface);
    padding: .8rem 1rem;
}
.stat-box b {
    font-family: var(--font-mono);
    font-size: 1.35rem;
    color: var(--accent);
    display: block;
}
.stat-box span {
    font-family: var(--font-mono);
    font-size: .68rem;
    color: var(--text-faint);
}

.app-actions { display: flex; gap: .7rem; margin-top: 1.3rem; flex-wrap: wrap; }
.btn {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    font-family: var(--font-mono);
    font-size: .78rem;
    font-weight: 600;
    padding: .55rem 1.1rem;
    border-radius: 8px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: transform .15s ease, box-shadow .2s ease, background-color .2s ease, border-color .2s ease, color .2s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--accent); color: #07120d; }
[data-theme="light"] .btn-primary { color: #fff; }
.btn-primary:hover { box-shadow: 0 5px 18px var(--accent-glow); }
.btn-ghost { border-color: var(--border-strong); color: var(--text); background: transparent; }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-dim); }

/* projects */
.proj-list { display: grid; gap: .8rem; }
.proj {
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--surface);
    padding: 1rem 1.2rem;
    transition: border-color .2s ease, transform .2s ease;
}
.proj:hover { border-color: var(--border-strong); transform: translateX(3px); }
.proj-head { display: flex; align-items: baseline; gap: .7rem; }
.proj-head .idx { font-family: var(--font-mono); font-size: .68rem; color: var(--text-faint); }
.proj h3 { font-size: 1rem; }
.proj p { margin: .35rem 0 .6rem; font-size: .87rem; color: var(--text-muted); }
.tags { display: flex; flex-wrap: wrap; gap: .4rem; }
.tags span {
    font-family: var(--font-mono);
    font-size: .65rem;
    color: var(--accent);
    background: var(--accent-dim);
    padding: .18rem .55rem;
    border-radius: 5px;
}

/* experience */
.xp-list { display: grid; gap: 1rem; }
.xp {
    border-left: 2px solid var(--border-strong);
    padding-left: 1.1rem;
    position: relative;
}
.xp::before {
    content: "";
    position: absolute;
    left: -6px;
    top: 6px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent);
}
.xp-date { font-family: var(--font-mono); font-size: .7rem; color: var(--accent); }
.xp h3 { font-size: 1rem; margin: .15rem 0 .1rem; }
.xp-org { font-family: var(--font-mono); font-size: .73rem; color: var(--text-faint); margin: 0 0 .45rem; }
.xp ul { margin: 0; padding-left: 1.1rem; color: var(--text-muted); font-size: .86rem; display: grid; gap: .2rem; }
.xp li::marker { color: var(--accent); }
.xp-tag {
    font-family: var(--font-mono);
    white-space: nowrap;
    font-size: .62rem;
    color: var(--accent);
    background: var(--accent-dim);
    border-radius: 4px;
    padding: .1rem .4rem;
    margin-left: .4rem;
    vertical-align: middle;
}

.award-row { display: flex; gap: .8rem; margin-top: 1.4rem; flex-wrap: wrap; }
.award-box {
    flex: 1;
    min-width: 200px;
    display: flex;
    gap: .8rem;
    align-items: center;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--surface);
    padding: .85rem 1rem;
}
.award-box svg { color: var(--warn); flex-shrink: 0; }
.award-box h4 { font-size: .85rem; }
.award-box p { margin: 0; font-family: var(--font-mono); font-size: .68rem; color: var(--text-faint); }

/* skills */
.skill-cat { margin-bottom: 1.3rem; }
.skill-cat h3 {
    font-family: var(--font-mono);
    font-size: .8rem;
    font-weight: 600;
    margin-bottom: .7rem;
}
.skill-cat h3 .tilde { color: var(--accent); }
.chips { display: flex; flex-wrap: wrap; gap: .45rem; }
.chip {
    font-family: var(--font-mono);
    font-size: .72rem;
    color: var(--text-muted);
    border: 1px solid var(--border);
    padding: .3rem .7rem;
    border-radius: 7px;
    transition: color .15s ease, border-color .15s ease, background-color .15s ease;
}
.chip:hover { color: var(--accent); border-color: var(--border-strong); background: var(--accent-dim); }

.bar-list { display: grid; gap: .55rem; }
.bar-item { display: grid; grid-template-columns: 110px 1fr 38px; gap: .8rem; align-items: center; }
.bar-item .bn { font-family: var(--font-mono); font-size: .76rem; color: var(--text-muted); }
.bar-item .bv { font-family: var(--font-mono); font-size: .7rem; color: var(--accent); text-align: right; }
.bar-track {
    height: 6px;
    background: var(--accent-dim);
    border-radius: 4px;
    overflow: hidden;
}
.bar-fill {
    height: 100%;
    width: 0%;
    background: var(--accent);
    border-radius: 4px;
    transition: width 1s cubic-bezier(.2, .7, .3, 1);
}

/* press */
.press-list { display: grid; gap: 0; border: 1px solid var(--border); border-radius: 10px; overflow: hidden; }
.press-item {
    display: grid;
    grid-template-columns: 96px 1fr auto;
    gap: 1rem;
    align-items: center;
    padding: .85rem 1.1rem;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    color: var(--text);
}
.press-item:last-child { border-bottom: 0; }
a.press-item:hover { background: var(--accent-dim); }
.press-src {
    font-family: var(--font-mono);
    font-size: .64rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: .05em;
}
.press-t { font-size: .85rem; color: var(--text-muted); }
a.press-item .press-t { color: var(--text); }
.press-item svg { color: var(--text-faint); }

/* contact */
.contact-rows { display: grid; gap: .7rem; margin: 1rem 0 1.4rem; }
.c-row {
    display: inline-flex;
    align-items: center;
    gap: .7rem;
    font-family: var(--font-mono);
    font-size: .85rem;
    color: var(--text-muted);
    width: fit-content;
}
.c-row svg { color: var(--accent); flex-shrink: 0; }
a.c-row:hover { color: var(--accent); }
.contact-lede { font-size: 1.05rem; font-weight: 600; margin: 0 0 .4rem; }
.socials { display: flex; gap: .5rem; margin-top: .4rem; }
.socials a {
    display: grid;
    place-items: center;
    width: 36px;
    height: 36px;
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-muted);
    transition: color .15s ease, border-color .15s ease, transform .15s ease;
}
.socials a:hover { color: var(--accent); border-color: var(--border-strong); transform: translateY(-2px); }

/* ---------- status bar (tmux) ---------- */

#statusbar {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    height: 34px;
    z-index: 500;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0 .7rem;
    background: var(--sb-bg);
    border-top: 1px solid var(--border);
    font-size: .72rem;
    transition: background-color .35s ease;
}

.sb-left { display: flex; align-items: center; gap: .6rem; min-width: 0; }
.sb-session { color: var(--accent); font-weight: 700; flex-shrink: 0; }

.sb-apps {
    display: flex;
    gap: .15rem;
    overflow-x: auto;
    scrollbar-width: none;
}
.sb-apps::-webkit-scrollbar { display: none; }

.sb-app {
    font-family: var(--font-mono);
    font-size: .72rem;
    color: var(--text-faint);
    background: transparent;
    border: none;
    border-radius: 5px;
    padding: .25rem .55rem;
    cursor: pointer;
    white-space: nowrap;
    transition: color .15s ease, background-color .15s ease;
}
.sb-app:hover { color: var(--text); background: var(--accent-dim); }
.sb-app.open { color: var(--text-muted); }
.sb-app.active { color: var(--accent); background: var(--accent-dim); font-weight: 600; }
.sb-app.min { font-style: italic; opacity: .8; }

.sb-right { display: flex; align-items: center; gap: .9rem; flex-shrink: 0; }
.sb-user { color: var(--text-faint); }
.sb-clock { color: var(--text-muted); }

.sb-btn {
    display: grid;
    place-items: center;
    width: 26px;
    height: 24px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-muted);
    cursor: pointer;
    transition: color .15s ease, border-color .15s ease;
}
.sb-btn:hover { color: var(--accent); border-color: var(--border-strong); }
[data-theme="dark"] .icon-moon { display: none; }
[data-theme="light"] .icon-sun { display: none; }

/* ---------- matrix easter-egg overlay ---------- */

#desktop.matrix-burst #rain { opacity: 1 !important; }

/* ---------- responsive ---------- */

@media (max-width: 760px) {
    .desktop-brand { display: none; }

    /* status bar: app list becomes the primary nav — full width, swipeable */
    #desktop { inset: 0 0 42px 0; }
    #statusbar { height: 42px; gap: .5rem; padding: 0 .55rem; }
    .sb-session { display: none; }
    .sb-left { flex: 1; min-width: 0; }
    .sb-apps {
        flex: 1;
        gap: .25rem;
        padding: .2rem 0;
        -webkit-overflow-scrolling: touch;
        -webkit-mask-image: linear-gradient(to right, black 88%, transparent);
        mask-image: linear-gradient(to right, black 88%, transparent);
    }
    .sb-app { font-size: .8rem; padding: .42rem .7rem; }
    .sb-date { display: none; }
    .sb-right { gap: .55rem; }
    .sb-btn { width: 30px; height: 28px; }

    .desktop-icons {
        top: auto;
        bottom: 12px;
        right: 12px;
        left: 12px;
        flex-direction: row;
        justify-content: center;
        gap: 4px;
    }
    .dicon { width: auto; flex: 1; max-width: 90px; padding: .55rem .3rem .5rem; }
    .dicon svg { width: 22px; height: 22px; }

    .win {
        inset: 8px 8px 8px 8px !important;
        width: auto !important;
        height: auto !important;
        min-width: 0;
    }
    .win-body { padding: 1.1rem 1.2rem 1.3rem; }
    .about-row { flex-direction: column; }
    .about-pic { width: 110px; }
    .bar-item { grid-template-columns: 90px 1fr 34px; }
    .press-item { grid-template-columns: 1fr; gap: .2rem; }
    .press-item svg { display: none; }
    .sb-user { display: none; }
    .t-bar-name { width: 10ch; }
}

/* touch devices: keep input ≥16px so iOS doesn't zoom on focus */
@media (pointer: coarse) {
    .term-scroll { font-size: 16px; }
}

/* ---------- reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        transition-duration: .01ms !important;
        animation-duration: .01ms !important;
    }
    .win { transition: none; }
}