/* ==========================================================================
   IT-KÜMMERER – Retrocomputer trifft 2026
   CRT-Phosphor-Theme: Grün auf Schwarz, Scanlines, Glow, 8-Bit-Charme
   ========================================================================== */

:root {
    --crt-bg: #050805;
    --crt-panel: #0a120a;
    --crt-panel-2: #0d180d;
    --crt-green: #33ff66;
    --crt-green-dim: #1a9933;
    --crt-green-dark: #0f5c1f;
    --crt-amber: #ffb000;
    --crt-cyan: #00e5ff;
    --crt-text: #b8ffc9;
    --crt-glow: 0 0 6px rgba(51, 255, 102, .55), 0 0 18px rgba(51, 255, 102, .25);
    --crt-glow-cyan: 0 0 6px rgba(0, 229, 255, .5), 0 0 18px rgba(0, 229, 255, .2);
    --font-pixel: 'Press Start 2P', monospace;
    --font-term: 'VT323', 'IBM Plex Mono', monospace;
}

/* ---------- Basis ---------- */

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--crt-bg);
    color: var(--crt-text);
    font-family: var(--font-term);
    font-size: 1.35rem;
    line-height: 1.55;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1 0 auto;
}

::selection {
    background: var(--crt-green);
    color: #000;
}

/* ---------- CRT-Overlay: Scanlines + Vignette + Flicker ---------- */

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 9990;
    background:
        repeating-linear-gradient(
            to bottom,
            rgba(0, 0, 0, 0) 0px,
            rgba(0, 0, 0, 0) 2px,
            rgba(0, 0, 0, .18) 3px,
            rgba(0, 0, 0, .18) 4px
        );
    mix-blend-mode: multiply;
}

body::after {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 9991;
    background: radial-gradient(ellipse at center, rgba(0,0,0,0) 55%, rgba(0,0,0,.45) 100%);
}

body.crt-on::before {
    animation: crt-flicker 4s infinite;
}

body.crt-off::before,
body.crt-off::after {
    display: none;
}

@keyframes crt-flicker {
    0%, 100% { opacity: 1; }
    97% { opacity: 1; }
    98% { opacity: .86; }
    99% { opacity: .95; }
}

@media (prefers-reduced-motion: reduce) {
    body::before { animation: none !important; }
    html { scroll-behavior: auto; }
}

/* ---------- Typografie ---------- */

h1, h2, h3, h4, h5, h6,
.navbar-brand {
    font-family: var(--font-pixel);
    color: var(--crt-green);
    text-shadow: var(--crt-glow);
    letter-spacing: .02em;
}

h1 { font-size: 1.6rem; }
h2 { font-size: 1.15rem; }
h3 { font-size: .95rem; color: var(--crt-cyan); text-shadow: var(--crt-glow-cyan); }
h4 { font-size: .8rem; }

@media (min-width: 768px) {
    h1 { font-size: 2.2rem; }
    h2 { font-size: 1.4rem; }
    h3 { font-size: 1.05rem; }
}

a {
    color: var(--crt-cyan);
    text-decoration: none;
    border-bottom: 1px dashed rgba(0, 229, 255, .4);
}

a:hover, a:focus {
    color: var(--crt-amber);
    border-bottom-color: var(--crt-amber);
    text-shadow: 0 0 8px rgba(255, 176, 0, .6);
}

p { margin-bottom: 1rem; }

strong { color: var(--crt-green); }

/* Prompt-Überschrift: "> _" vor Überschriften */
.prompt::before {
    content: "> ";
    color: var(--crt-amber);
}

/* Blinkender Block-Cursor */
.cursor::after {
    content: "█";
    color: var(--crt-green);
    animation: blink 1s steps(1) infinite;
}

@keyframes blink {
    50% { opacity: 0; }
}

/* ---------- Header / Navigation ---------- */

.crt-navbar {
    background: rgba(5, 8, 5, .92);
    border-bottom: 2px solid var(--crt-green-dark);
    backdrop-filter: blur(4px);
}

.navbar-brand {
    font-size: .95rem;
    color: var(--crt-green) !important;
    display: flex;
    align-items: center;
    gap: .6rem;
}

.navbar-brand img {
    height: 34px;
    width: auto;
    image-rendering: pixelated;
}

.crt-navbar .nav-link {
    font-family: var(--font-term);
    font-size: 1.25rem;
    color: var(--crt-green-dim);
    border-bottom: none;
    padding: .4rem .8rem;
    text-transform: uppercase;
}

.crt-navbar .nav-link::before {
    content: "[";
    color: var(--crt-green-dark);
    margin-right: .15rem;
}

.crt-navbar .nav-link::after {
    content: "]";
    color: var(--crt-green-dark);
    margin-left: .15rem;
}

.crt-navbar .nav-link:hover,
.crt-navbar .nav-link.active {
    color: var(--crt-green);
    text-shadow: var(--crt-glow);
}

.crt-navbar .nav-link.active::before,
.crt-navbar .nav-link.active::after {
    color: var(--crt-amber);
}

.navbar-toggler {
    border-color: var(--crt-green-dark);
}

.navbar-toggler:focus {
    box-shadow: 0 0 0 .2rem rgba(51, 255, 102, .35);
}

/* ---------- Terminal-Fenster ---------- */

.term-window {
    background: var(--crt-panel);
    border: 1px solid var(--crt-green-dark);
    border-radius: 6px;
    box-shadow: 0 0 0 1px rgba(51, 255, 102, .12), 0 0 24px rgba(51, 255, 102, .08);
    margin-bottom: 2rem;
    overflow: hidden;
}

.term-titlebar {
    display: flex;
    align-items: center;
    gap: .5rem;
    background: linear-gradient(180deg, var(--crt-panel-2), var(--crt-panel));
    border-bottom: 1px solid var(--crt-green-dark);
    padding: .45rem .9rem;
    font-family: var(--font-term);
    font-size: 1.1rem;
    color: var(--crt-green-dim);
    user-select: none;
}

.term-titlebar .dot {
    width: 12px;
    height: 12px;
    border-radius: 0; /* eckig = 8-Bit */
    display: inline-block;
}

.term-titlebar .dot.r { background: #ff5f56; }
.term-titlebar .dot.y { background: var(--crt-amber); }
.term-titlebar .dot.g { background: var(--crt-green); }

.term-titlebar .term-path {
    margin-left: .5rem;
    color: var(--crt-green);
}

.term-body {
    padding: 1.4rem 1.6rem;
}

/* Retro-Listen: "> "-Aufzählung */
.term-list {
    list-style: none;
    padding-left: 0;
}

.term-list li {
    padding-left: 1.6rem;
    position: relative;
    margin-bottom: .35rem;
}

.term-list li::before {
    content: ">";
    position: absolute;
    left: .3rem;
    color: var(--crt-amber);
}

/* ---------- Kacheln (Home) ---------- */

.tile {
    display: block;
    height: 100%;
    background: var(--crt-panel);
    border: 1px solid var(--crt-green-dark);
    border-radius: 6px;
    padding: 1.4rem;
    color: var(--crt-text);
    border-bottom: 1px solid var(--crt-green-dark); /* überschreibt Link-Dash */
    transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
}

.tile:hover, .tile:focus {
    transform: translateY(-4px);
    border-color: var(--crt-green);
    box-shadow: var(--crt-glow);
    color: var(--crt-text);
}

.tile .tile-icon {
    font-family: var(--font-pixel);
    font-size: 1.4rem;
    color: var(--crt-amber);
    display: block;
    margin-bottom: .8rem;
}

.tile h3 {
    margin-bottom: .6rem;
}

/* ---------- Buttons ---------- */

.btn-crt {
    font-family: var(--font-pixel);
    font-size: .75rem;
    color: var(--crt-green);
    background: transparent;
    border: 2px solid var(--crt-green);
    border-radius: 0;
    padding: .8rem 1.4rem;
    text-transform: uppercase;
    box-shadow: inset 0 0 12px rgba(51, 255, 102, .15);
    transition: all .15s ease;
}

.btn-crt:hover, .btn-crt:focus {
    color: #000;
    background: var(--crt-green);
    box-shadow: var(--crt-glow);
}

.btn-crt-amber {
    color: var(--crt-amber);
    border-color: var(--crt-amber);
    box-shadow: inset 0 0 12px rgba(255, 176, 0, .15);
}

.btn-crt-amber:hover, .btn-crt-amber:focus {
    color: #000;
    background: var(--crt-amber);
    box-shadow: 0 0 6px rgba(255, 176, 0, .55), 0 0 18px rgba(255, 176, 0, .25);
}

/* ---------- Hero / Boot-Sequenz ---------- */

.hero {
    padding: 3rem 0 2rem;
}

.boot-screen {
    background: #000;
    border: 1px solid var(--crt-green-dark);
    border-radius: 6px;
    padding: 1.5rem;
    min-height: 260px;
    font-size: 1.3rem;
    white-space: pre-wrap;
    color: var(--crt-green);
    text-shadow: 0 0 6px rgba(51, 255, 102, .5);
}

.boot-screen .amber { color: var(--crt-amber); }
.boot-screen .cyan { color: var(--crt-cyan); }

.hero-img {
    max-width: 100%;
    height: auto;
    border: 1px solid var(--crt-green-dark);
    border-radius: 6px;
    box-shadow: 0 0 8px rgba(51, 255, 102, .15);
}

.hero-claim {
    font-family: var(--font-pixel);
    font-size: 1rem;
    color: var(--crt-green);
    text-shadow: var(--crt-glow);
    min-height: 3.5rem;
}

@media (min-width: 768px) {
    .hero-claim { font-size: 1.5rem; }
}

/* ASCII-Deko */
.ascii-deco {
    font-size: .85rem;
    line-height: 1.1;
    color: var(--crt-green-dark);
    white-space: pre;
    overflow: hidden;
    user-select: none;
}

/* ---------- Formulare ---------- */

.form-label {
    color: var(--crt-green-dim);
    font-size: 1.15rem;
    text-transform: uppercase;
}

.form-control {
    background: #000;
    border: 1px solid var(--crt-green-dark);
    border-radius: 0;
    color: var(--crt-green);
    font-family: var(--font-term);
    font-size: 1.3rem;
}

.form-control:focus {
    background: #000;
    color: var(--crt-green);
    border-color: var(--crt-green);
    box-shadow: var(--crt-glow);
}

.form-control::placeholder {
    color: var(--crt-green-dark);
}

.field-validation-error {
    color: var(--crt-amber);
    font-size: 1.1rem;
}

.validation-summary-errors ul {
    list-style: none;
    padding-left: 0;
    color: var(--crt-amber);
}

/* Alerts im Terminal-Look */
.alert-crt {
    background: var(--crt-panel);
    border: 1px solid var(--crt-green);
    color: var(--crt-green);
    border-radius: 0;
    padding: 1rem 1.2rem;
}

.alert-crt.error {
    border-color: var(--crt-amber);
    color: var(--crt-amber);
}

/* ---------- Cookie-Banner (Retro-Dialog) ---------- */

.cookie-banner {
    position: fixed;
    left: 50%;
    bottom: 1.5rem;
    transform: translateX(-50%);
    width: min(680px, calc(100% - 2rem));
    z-index: 9995;
}

.cookie-banner .term-window {
    margin-bottom: 0;
    box-shadow: 0 0 40px rgba(51, 255, 102, .35);
}

/* ---------- Footer: C64-Statuszeile ---------- */

.crt-footer {
    border-top: 2px solid var(--crt-green-dark);
    background: rgba(5, 8, 5, .92);
    padding: 1.2rem 0;
    font-size: 1.15rem;
    color: var(--crt-green-dim);
}

.crt-footer .ready-prompt {
    color: var(--crt-green);
}

.crt-footer a {
    color: var(--crt-green-dim);
}

.crt-footer a:hover {
    color: var(--crt-amber);
}

/* CRT-Schalter */
.crt-toggle {
    background: none;
    border: 1px solid var(--crt-green-dark);
    color: var(--crt-green-dim);
    font-family: var(--font-term);
    font-size: 1rem;
    padding: .15rem .6rem;
}

.crt-toggle:hover {
    color: var(--crt-green);
    border-color: var(--crt-green);
}

/* ---------- Diverses ---------- */

hr {
    border-color: var(--crt-green-dark);
    opacity: 1;
}

.section-gap {
    padding: 2.5rem 0;
}

.lead {
    color: var(--crt-text);
    font-size: 1.45rem;
}

/* Pixel-Herz / Deko-Zeichen */
.pixel-accent {
    color: var(--crt-amber);
    font-family: var(--font-pixel);
}