/* ============================================================
   PORTA-NIGRANISCHE STYLES
   ============================================================ */

/* ------------------------------------------------------------
   THEMES — alle Werte auf solide Kontraste geprüft
   --bg vs --card-bg: ≥ 8% Helligkeitsunterschied
   --text vs --bg/--card-bg: hoher Kontrast
   --accent: kräftig, lesbar auf bg & card-bg
   ------------------------------------------------------------ */

/* Sandstein (warmes Hell) */
:root,
html.theme-sandstein {
    --bg:          #ebe0c8;
    --bg-alt:      #dccba0;
    --card-bg:     #fdf6e3;
    --text:        #1f0f04;
    --accent:      #7a3a0e;
    --accent-2:    #b35a18;
    --accent-glow: rgba(122, 58, 14, 0.35);
    --border:      #b88840;
    --muted:       #5a3e22;
    --shadow:       0 4px 14px rgba(60, 30, 10, 0.18);
    --shadow-hover: 0 10px 26px rgba(60, 30, 10, 0.30);
}

/* Mitternacht (warmes Dunkel) */
html.theme-mitternacht {
    --bg:          #120a02;
    --bg-alt:      #1d1208;
    --card-bg:     #2a1c0e;
    --text:        #f3e0b6;
    --accent:      #f0a050;
    --accent-2:    #ffc380;
    --accent-glow: rgba(240, 160, 80, 0.40);
    --border:      #5a4020;
    --muted:       #c0a878;
    --shadow:       0 4px 14px rgba(0, 0, 0, 0.55);
    --shadow-hover: 0 10px 26px rgba(0, 0, 0, 0.75);
}

/* Imperium (Purpur & Gold) */
html.theme-imperium {
    --bg:          #14081a;
    --bg-alt:      #1f0f28;
    --card-bg:     #311840;
    --text:        #fbecbf;
    --accent:      #ffd354;
    --accent-2:    #ffe188;
    --accent-glow: rgba(255, 211, 84, 0.45);
    --border:      #6b3585;
    --muted:       #d8bc88;
    --shadow:       0 4px 14px rgba(40, 0, 60, 0.55);
    --shadow-hover: 0 10px 26px rgba(60, 0, 80, 0.75);
}

/* Mosel (tiefes Flussblau) */
html.theme-mosel {
    --bg:          #081420;
    --bg-alt:      #0f2030;
    --card-bg:     #1a3046;
    --text:        #e6f3fb;
    --accent:      #7ed0ff;
    --accent-2:    #b0e0ff;
    --accent-glow: rgba(126, 208, 255, 0.40);
    --border:      #305a78;
    --muted:       #a8c4d4;
    --shadow:       0 4px 14px rgba(0, 20, 50, 0.55);
    --shadow-hover: 0 10px 26px rgba(0, 30, 70, 0.75);
}

/* Pergament (vergilbtes Papier) */
html.theme-pergament {
    --bg:          #e8d6a4;
    --bg-alt:      #d8c280;
    --card-bg:     #faecc4;
    --text:        #2a1808;
    --accent:      #5e2e0a;
    --accent-2:    #8a4818;
    --accent-glow: rgba(94, 46, 10, 0.40);
    --border:      #a07840;
    --muted:       #4a3010;
    --shadow:       0 4px 14px rgba(80, 50, 20, 0.22);
    --shadow-hover: 0 10px 26px rgba(80, 50, 20, 0.35);
}

/* Marmor (kühler Senatsmarmor) */
html.theme-marmor {
    --bg:          #dde0e6;
    --bg-alt:      #c8ccd4;
    --card-bg:     #f8f9fb;
    --text:        #14202c;
    --accent:      #2c3e54;
    --accent-2:    #4a5e78;
    --accent-glow: rgba(44, 62, 84, 0.30);
    --border:      #98a0ac;
    --muted:       #485668;
    --shadow:       0 4px 14px rgba(20, 30, 40, 0.18);
    --shadow-hover: 0 10px 26px rgba(20, 30, 40, 0.28);
}

/* Glut (Sonnenuntergang) */
html.theme-glut {
    --bg:          #1a0805;
    --bg-alt:      #28100a;
    --card-bg:     #3a1a14;
    --text:        #ffe6d0;
    --accent:      #ff8a55;
    --accent-2:    #ffb88a;
    --accent-glow: rgba(255, 138, 85, 0.45);
    --border:      #6b2818;
    --muted:       #e0b090;
    --shadow:       0 4px 14px rgba(80, 20, 0, 0.55);
    --shadow-hover: 0 10px 26px rgba(120, 40, 0, 0.75);
}

/* Moos (antikes Mauergrün) */
html.theme-moos {
    --bg:          #081810;
    --bg-alt:      #0f2818;
    --card-bg:     #1c3424;
    --text:        #e0f0c8;
    --accent:      #8fcc60;
    --accent-2:    #b8e088;
    --accent-glow: rgba(143, 204, 96, 0.40);
    --border:      #346030;
    --muted:       #a8c090;
    --shadow:       0 4px 14px rgba(0, 30, 10, 0.55);
    --shadow-hover: 0 10px 26px rgba(0, 50, 20, 0.75);
}

/* ============================================================
   BASE
   ============================================================ */
* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--text);
    font-family: 'Georgia', 'Cambria', 'Times New Roman', serif;
    line-height: 1.55;
    transition: background-color 0.5s ease, color 0.5s ease;
    overflow-x: hidden;
}
body {
    position: relative;
    min-height: 100vh;
}

a {
    color: var(--accent);
    text-decoration: none;
    position: relative;
    transition: color 0.2s ease;
}
::selection { background: var(--accent); color: var(--card-bg); }

/* ============================================================
   HINTERGRUND-EFFEKTE
   ============================================================ */
.bg-layer {
    position: fixed;
    inset: 0;
    pointer-events: none;
}

.bg-gradient {
    background:
        radial-gradient(ellipse 80% 60% at 50% 0%, var(--bg-alt) 0%, transparent 70%),
        radial-gradient(ellipse 60% 80% at 100% 100%, var(--accent-glow) 0%, transparent 60%);
    z-index: -10;
    opacity: 0.85;
    transition: background 0.6s ease, opacity 0.6s ease;
}

/* Greek-Key / Mäander-Muster als Maske, eingefärbt mit --accent */
.bg-meander {
    background: var(--accent);
    -webkit-mask:
        url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 80 80'><g fill='none' stroke='black' stroke-width='1.4'><path d='M 0 70 L 0 10 L 70 10 L 70 70 M 10 70 L 10 20 L 60 20 L 60 70 M 20 70 L 20 30 L 50 30 L 50 70 M 30 70 L 30 40 L 40 40 L 40 70'/></g></svg>") repeat;
            mask:
        url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 80 80'><g fill='none' stroke='black' stroke-width='1.4'><path d='M 0 70 L 0 10 L 70 10 L 70 70 M 10 70 L 10 20 L 60 20 L 60 70 M 20 70 L 20 30 L 50 30 L 50 70 M 30 70 L 30 40 L 40 40 L 40 70'/></g></svg>") repeat;
    -webkit-mask-size: 80px 80px;
            mask-size: 80px 80px;
    opacity: 0.05;
    z-index: -9;
    animation: meanderDrift 90s linear infinite;
}
@keyframes meanderDrift {
    0%   { -webkit-mask-position:   0  0; mask-position:   0  0; }
    100% { -webkit-mask-position: 80px 80px; mask-position: 80px 80px; }
}

/* Canvas für Partikel & schwebende Ziffern */
.bg-canvas {
    z-index: -8;
    width: 100%;
    height: 100%;
}

/* ============================================================
   PORTA-NIGRA SKETCH (im Flow zwischen Hero & Converter)
   ============================================================ */
.porta-sketch-wrap {
    position: relative;
    z-index: 2;
    max-width: 460px;
    margin: 0.5rem auto 2rem;
    padding: 0 1rem;
    text-align: center;
}
.porta-sketch-wrap::before {
    content: '';
    position: absolute;
    inset: -8% -4%;
    background: radial-gradient(ellipse at center, var(--accent-glow), transparent 65%);
    opacity: 0.45;
    z-index: -1;
    filter: blur(18px);
    pointer-events: none;
}

.porta-sketch {
    width: 100%;
    height: auto;
    color: var(--accent);
    filter: drop-shadow(0 6px 14px var(--accent-glow));
    animation: sketchIntro 1.6s cubic-bezier(0.25, 1, 0.4, 1) both,
               sketchFloat 7s ease-in-out infinite 1.6s;
}

.sketch-caption {
    margin: 0.4rem 0 0;
    font-size: 0.78rem;
    letter-spacing: 0.18em;
    color: var(--muted);
    font-style: italic;
    text-transform: uppercase;
}

/* ---- Vögel & Strichmännchen ---- */
.sketch-life { pointer-events: none; }

.bird {
    animation-iteration-count: infinite;
    animation-timing-function: linear;
}
.bird-1 { animation: birdFly1 16s linear infinite; }
.bird-2 { animation: birdFly2 22s linear infinite -7s; }
.bird-3 { animation: birdFly3 19s linear infinite -13s; }
.bird-4 { animation: birdFly4 27s linear infinite -3s; }

@keyframes birdFly1 {
    0%   { transform: translate(-30px, 110px); }
    25%  { transform: translate(180px, 80px); }
    50%  { transform: translate(400px, 100px); }
    75%  { transform: translate(620px, 70px); }
    100% { transform: translate(840px, 90px); }
}
@keyframes birdFly2 {
    0%   { transform: translate(840px, 75px); }
    25%  { transform: translate(620px, 90px); }
    50%  { transform: translate(400px, 60px); }
    75%  { transform: translate(180px, 85px); }
    100% { transform: translate(-30px, 70px); }
}
@keyframes birdFly3 {
    0%   { transform: translate(-30px, 150px); }
    33%  { transform: translate(280px, 130px); }
    66%  { transform: translate(550px, 160px); }
    100% { transform: translate(840px, 135px); }
}
@keyframes birdFly4 {
    0%   { transform: translate(-30px, 50px); }
    50%  { transform: translate(420px, 40px); }
    100% { transform: translate(840px, 55px); }
}

.bird-flap {
    transform-box: fill-box;
    transform-origin: center;
    animation: birdFlap 0.4s ease-in-out infinite alternate;
}
.bird-1 .bird-flap { animation-duration: 0.42s; }
.bird-2 .bird-flap { animation-duration: 0.36s; }
.bird-3 .bird-flap { animation-duration: 0.48s; }
.bird-4 .bird-flap { animation-duration: 0.32s; }
@keyframes birdFlap {
    0%   { transform: scaleY(0.3); }
    100% { transform: scaleY(1.2); }
}

.walker-1 { animation: walkRight 30s linear infinite; }
.walker-2 { animation: walkRight 24s linear infinite -9s; }
.walker-3 { animation: walkLeft  35s linear infinite -16s; }
.walker-4 { animation: walkRight 19s linear infinite -5s; }
.walker-5 { animation: walkLeft  28s linear infinite -22s; }
.walker-6 { animation: walkRight 42s linear infinite -30s; }

@keyframes walkRight {
    0%   { transform: translateX(-40px); }
    100% { transform: translateX(840px); }
}
@keyframes walkLeft {
    0%   { transform: translateX(840px); }
    100% { transform: translateX(-40px); }
}
@keyframes sketchIntro {
    0%   { opacity: 0; transform: translateY(24px) scale(0.94); }
    100% { opacity: 1; transform: translateY(0)    scale(1); }
}
@keyframes sketchFloat {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(-7px); }
}

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
    position: relative;
    z-index: 5;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background: var(--card-bg);
    border-bottom: 2px solid var(--border);
    box-shadow: var(--shadow);
    transition: background-color 0.5s ease, border-color 0.5s ease;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--text);
    font-weight: bold;
    font-size: 1.15rem;
    letter-spacing: 0.15em;
    transition: transform 0.25s ease;
}
.brand:hover { transform: scale(1.03); }
.brand:hover .brand-icon { transform: rotate(360deg); color: var(--accent); }

.brand-icon {
    color: var(--accent);
    font-size: 1.6rem;
    display: inline-block;
    transition: transform 0.6s ease, color 0.3s ease;
}

.nav-links {
    display: flex;
    gap: 1.2rem;
    align-items: center;
}
.nav-links a {
    color: var(--text);
    font-weight: 600;
    letter-spacing: 0.05em;
    padding: 0.3rem 0;
}
.nav-links a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.3s ease;
}
.nav-links a:hover { color: var(--accent); }
.nav-links a:hover::after { width: 100%; }

/* Theme-Switcher */
.theme-switcher {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}
.theme-toggle {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--accent);
    padding: 0.45rem 0.9rem;
    border-radius: 999px;
    cursor: pointer;
    font-family: inherit;
    font-size: 0.85rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease,
                box-shadow 0.25s ease, transform 0.2s ease;
}
.theme-toggle:hover {
    background: var(--accent);
    color: var(--card-bg);
    border-color: var(--accent);
    box-shadow: 0 0 12px var(--accent-glow);
    transform: translateY(-1px);
}
.theme-toggle:active { transform: scale(0.96); }
.theme-toggle .theme-icon { display: inline-block; transition: transform 0.5s ease; }
.theme-toggle.spin .theme-icon { animation: themeSpin 0.7s ease; }
@keyframes themeSpin {
    0%   { transform: rotate(0deg) scale(1); }
    50%  { transform: rotate(180deg) scale(1.3); }
    100% { transform: rotate(360deg) scale(1); }
}

.theme-menu {
    position: absolute;
    top: calc(100% + 0.6rem);
    right: 0;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 0.6rem;
    box-shadow: var(--shadow-hover);
    display: grid;
    grid-template-columns: repeat(4, auto);
    gap: 0.5rem;
    opacity: 0;
    transform: translateY(-6px) scale(0.95);
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
    z-index: 50;
}
.theme-menu.open {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
}
.theme-swatch {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid transparent;
    cursor: pointer;
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
    position: relative;
}
.theme-swatch:hover {
    transform: scale(1.15);
    box-shadow: 0 0 10px var(--accent-glow);
}
.theme-swatch.active {
    border-color: var(--accent);
    transform: scale(1.1);
    box-shadow: 0 0 0 2px var(--card-bg), 0 0 0 4px var(--accent);
}
.theme-swatch::after {
    content: attr(data-label);
    position: absolute;
    bottom: -1.6rem;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.7rem;
    color: var(--text);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
}
.theme-swatch:hover::after { opacity: 1; }

/* ============================================================
   FUNFACT-BANNER (Edikt mit Schreibmaschine)
   ============================================================ */
.funfact-banner {
    position: relative;
    z-index: 4;
    background: var(--card-bg);
    border-bottom: 1px solid var(--border);
    padding: 0.7rem 2rem;
    display: flex;
    gap: 1rem;
    align-items: center;
    font-style: italic;
    color: var(--text);
    transition: background-color 0.5s ease, border-color 0.5s ease;
    cursor: pointer;
}
.edikt-text {
    display: inline-block;
    transition: opacity 0.4s ease;
    color: var(--text);
}
.edikt-text.fade-in { animation: fadeSlide 0.6s ease both; }
.edikt-text.shimmer-out { animation: shimmerOut 0.35s ease forwards; }
@keyframes shimmerOut {
    0%   { opacity: 1; filter: blur(0); transform: translateX(0); }
    100% { opacity: 0; filter: blur(4px); transform: translateX(-12px); }
}

.edikt-cursor {
    display: inline-block;
    color: var(--accent);
    margin-left: 1px;
    animation: blink 1s steps(2, start) infinite;
    transform: translateY(1px);
    font-style: normal;
    font-weight: bold;
}
.edikt-cursor.hidden { opacity: 0; }
@keyframes blink {
    to { visibility: hidden; }
}

.edikt-marker {
    background: var(--accent);
    color: var(--card-bg);
    padding: 0.2rem 0.6rem;
    border-radius: 3px;
    font-weight: bold;
    font-style: normal;
    letter-spacing: 0.2em;
    font-size: 0.75rem;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.funfact-banner:hover .edikt-marker {
    transform: scale(1.08);
    box-shadow: 0 0 10px var(--accent-glow);
}

@keyframes fadeSlide {
    0%   { opacity: 0; transform: translateX(-8px); }
    100% { opacity: 1; transform: translateX(0); }
}

/* ============================================================
   CONTAINER & HERO
   ============================================================ */
.container {
    position: relative;
    z-index: 2;
    max-width: 1100px;
    margin: 0 auto;
    padding: 2rem;
    animation: fadeUp 0.6s ease both;
}
@keyframes fadeUp {
    0%   { opacity: 0; transform: translateY(12px); }
    100% { opacity: 1; transform: translateY(0); }
}

.hero {
    text-align: center;
    margin-bottom: 2rem;
}
.hero h1 {
    font-size: 2.4rem;
    margin: 0.5rem 0;
    color: var(--accent);
    letter-spacing: 0.05em;
    transition: text-shadow 0.3s ease, letter-spacing 0.3s ease;
}
.hero h1:hover {
    text-shadow: 0 0 18px var(--accent-glow);
    letter-spacing: 0.08em;
}
.subtitle { font-style: italic; color: var(--muted); }

/* ============================================================
   CARDS
   ============================================================ */
.card {
    position: relative;
    z-index: 1;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 1.8rem;
    box-shadow: var(--shadow);
    margin-bottom: 1.8rem;
    transition: box-shadow 0.3s ease, border-color 0.3s ease, background-color 0.5s ease;
}
.card:hover {
    box-shadow: var(--shadow-hover);
    border-color: var(--accent);
}
.card h2 {
    margin-top: 0;
    color: var(--accent);
    border-bottom: 1px solid var(--border);
    padding-bottom: 0.5rem;
}
.muted { color: var(--muted); }

.section-title {
    font-size: 0.78rem;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--muted);
    margin: 1.2rem 0 0.8rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}
.section-title::after {
    content: '';
    flex: 1;
    height: 1px;
    background: linear-gradient(to right, var(--border), transparent);
}

/* ============================================================
   KACHEL-MENU
   ============================================================ */
.tile-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 0.7rem;
    margin-bottom: 1rem;
}

.tile {
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 0.9rem 0.5rem;
    cursor: pointer;
    text-align: center;
    color: var(--text);
    font-family: inherit;
    transition: transform 0.2s ease, box-shadow 0.25s ease, border-color 0.25s ease,
                background 0.25s ease, color 0.25s ease;
    user-select: none;
    position: relative;
    overflow: hidden;
}
.tile:hover {
    transform: translateY(-3px);
    border-color: var(--accent);
    box-shadow: 0 6px 14px var(--accent-glow);
}
.tile:active { transform: translateY(0) scale(0.97); }

.tile.selected {
    background: var(--accent);
    color: var(--card-bg);
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}
.tile.selected .tile-icon { color: var(--card-bg); }
.tile.selected .tile-meta { color: var(--card-bg); opacity: 0.85; }

.tile::before {
    content: '';
    position: absolute;
    top: 0; left: -120%;
    width: 60%; height: 100%;
    background: linear-gradient(120deg, transparent, rgba(255, 255, 255, 0.18), transparent);
    transition: left 0.6s ease;
    pointer-events: none;
}
.tile:hover::before { left: 130%; }

.tile-icon {
    display: block;
    font-size: 1.7rem;
    color: var(--accent);
    margin-bottom: 0.3rem;
    transition: transform 0.3s ease, color 0.25s ease;
}
.tile:hover .tile-icon { transform: scale(1.15) rotate(-4deg); }

.tile-name {
    font-weight: bold;
    font-size: 0.85rem;
    letter-spacing: 0.02em;
    line-height: 1.2;
    display: block;
}
.tile-meta {
    font-size: 0.7rem;
    color: var(--muted);
    margin-top: 0.2rem;
    font-style: italic;
    display: block;
}

.direction-toggle {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.6rem;
    margin-bottom: 1.2rem;
}
.direction-tile {
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 0.8rem 1rem;
    text-align: center;
    cursor: pointer;
    color: var(--text);
    font-family: inherit;
    font-weight: bold;
    letter-spacing: 0.05em;
    transition: transform 0.2s ease, box-shadow 0.25s ease, border-color 0.25s ease,
                background 0.25s ease, color 0.25s ease;
    user-select: none;
}
.direction-tile:hover {
    transform: translateY(-2px);
    border-color: var(--accent);
    box-shadow: 0 4px 12px var(--accent-glow);
}
.direction-tile.selected {
    background: var(--accent);
    color: var(--card-bg);
    border-color: var(--accent);
}

/* ============================================================
   INPUTS
   ============================================================ */
input[type="number"], input[type="text"] {
    width: 100%;
    padding: 0.75rem 0.9rem;
    background: var(--bg);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 4px;
    font-family: inherit;
    font-size: 1rem;
    font-variant-numeric: tabular-nums;
    letter-spacing: 0.02em;
    transition: border-color 0.2s ease, box-shadow 0.2s ease,
                background-color 0.5s ease, transform 0.15s ease;
}
input[type="number"]:hover, input[type="text"]:hover { border-color: var(--accent); }
input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
    transform: translateY(-1px);
}

/* Hide native number-input spinners */
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
    -webkit-appearance: none;
    appearance: none;
    margin: 0;
}
input[type="number"] {
    -moz-appearance: textfield;
    appearance: textfield;
}
label {
    display: block;
    margin-top: 1rem;
    margin-bottom: 0.3rem;
    font-weight: bold;
    letter-spacing: 0.04em;
    color: var(--text);
}

/* ============================================================
   IMPERIAL BUTTON
   ============================================================ */
.btn-imperial {
    position: relative;
    margin-top: 1.2rem;
    background: var(--accent);
    color: var(--card-bg);
    border: none;
    padding: 0.85rem 1.5rem;
    font-family: inherit;
    font-weight: bold;
    letter-spacing: 0.08em;
    border-radius: 4px;
    cursor: pointer;
    text-transform: uppercase;
    font-size: 0.9rem;
    overflow: hidden;
    transition: transform 0.15s ease, box-shadow 0.25s ease, letter-spacing 0.2s ease;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}
.btn-imperial::before {
    content: '';
    position: absolute;
    top: 0;
    left: -120%;
    width: 60%;
    height: 100%;
    background: linear-gradient(120deg, transparent, rgba(255, 255, 255, 0.35), transparent);
    transition: left 0.6s ease;
    pointer-events: none;
}
.btn-imperial:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px var(--accent-glow);
    letter-spacing: 0.12em;
}
.btn-imperial:hover::before { left: 130%; }
.btn-imperial:active {
    transform: translateY(1px) scale(0.98);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.25);
}
.btn-imperial:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px var(--accent-glow), 0 6px 16px var(--accent-glow);
}
.btn-imperial.pulse { animation: btnPulse 0.5s ease; }
@keyframes btnPulse {
    0%   { transform: scale(1); }
    40%  { transform: scale(0.94); }
    100% { transform: scale(1); }
}
.btn-imperial .ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    transform: scale(0);
    animation: ripple 0.55s ease-out;
    pointer-events: none;
}
@keyframes ripple {
    to { transform: scale(4); opacity: 0; }
}

/* ============================================================
   RESULT
   ============================================================ */
.converter-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    margin-top: 1rem;
}
.result-col {
    background: var(--bg);
    border: 1px dashed var(--border);
    border-radius: 4px;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    transition: border-color 0.3s ease, background-color 0.5s ease;
}
.result-col:hover { border-color: var(--accent); border-style: solid; }
.result-label {
    font-size: 0.85rem;
    letter-spacing: 0.25em;
    color: var(--muted);
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}
.result-value {
    font-size: 1.8rem;
    color: var(--accent);
    font-weight: bold;
    word-break: break-word;
    transition: text-shadow 0.3s ease;
}
.result-value.flash { animation: flashResult 0.7s ease; }
@keyframes flashResult {
    0%   { opacity: 0; transform: translateY(-6px); text-shadow: none; }
    50%  { opacity: 1; transform: translateY(0); text-shadow: 0 0 14px var(--accent-glow); }
    100% { opacity: 1; transform: translateY(0); text-shadow: none; }
}
.result-comment {
    margin-top: 0.8rem;
    font-style: italic;
    color: var(--muted);
    transition: opacity 0.4s ease;
}
.result-comment.fade-in { animation: fadeSlide 0.5s ease both; }

.thinking::after {
    content: '';
    display: inline-block;
    width: 1.2em;
    text-align: left;
    animation: dots 1.2s steps(4, end) infinite;
}
@keyframes dots {
    0%, 20%  { content: ''; }
    40%      { content: '.'; }
    60%      { content: '..'; }
    80%, 100%{ content: '...'; }
}

/* ============================================================
   CARDS-ROW (Umrechner | Farb-Konsultation nebeneinander)
   ============================================================ */
.cards-row {
    display: grid;
    grid-template-columns: minmax(0, 2.2fr) minmax(0, 1fr);
    gap: 1.6rem;
    align-items: start;
    margin-bottom: 1.8rem;
}
.cards-row > .card { margin-bottom: 0; }

.cards-row .color-card {
    position: sticky;
    top: 1rem;
}

@media (max-width: 980px) {
    .cards-row { grid-template-columns: 1fr; }
    .cards-row .color-card { position: static; }
}

/* ============================================================
   COLOR
   ============================================================ */
.color-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.2rem;
    margin-top: 1rem;
}
.color-preview {
    width: 100%;
    height: 110px;
    border: 1px solid var(--border);
    border-radius: 4px;
    margin-bottom: 0.8rem;
    transition: background 0.5s ease, transform 0.25s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    cursor: pointer;
}
.color-preview:hover {
    transform: translateY(-2px) scale(1.01);
    box-shadow: var(--shadow-hover);
    border-color: var(--accent);
}
.color-name { font-weight: bold; color: var(--accent); letter-spacing: 0.05em; }
.color-name.fade-in,
.color-prosa.fade-in { animation: fadeSlide 0.5s ease both; }
.color-prosa { font-style: italic; color: var(--text); margin-top: 0.4rem; }

/* ============================================================
   ÜBERSICHT
   ============================================================ */
.grid-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1.2rem;
    margin-bottom: 2rem;
}
.unit-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-left: 4px solid var(--accent);
    border-radius: 4px;
    padding: 1.2rem;
    box-shadow: var(--shadow);
    transition: transform 0.25s ease, box-shadow 0.25s ease,
                border-left-width 0.25s ease, background-color 0.5s ease;
    animation: fadeUp 0.5s ease both;
}
.unit-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-left-width: 8px;
}
.unit-card:hover h3 { letter-spacing: 0.08em; }

.grid-cards .unit-card:nth-child(1)  { animation-delay: 0.02s; }
.grid-cards .unit-card:nth-child(2)  { animation-delay: 0.05s; }
.grid-cards .unit-card:nth-child(3)  { animation-delay: 0.08s; }
.grid-cards .unit-card:nth-child(4)  { animation-delay: 0.11s; }
.grid-cards .unit-card:nth-child(5)  { animation-delay: 0.14s; }
.grid-cards .unit-card:nth-child(6)  { animation-delay: 0.17s; }
.grid-cards .unit-card:nth-child(7)  { animation-delay: 0.20s; }
.grid-cards .unit-card:nth-child(8)  { animation-delay: 0.23s; }
.grid-cards .unit-card:nth-child(9)  { animation-delay: 0.26s; }
.grid-cards .unit-card:nth-child(10) { animation-delay: 0.29s; }
.grid-cards .unit-card:nth-child(n+11) { animation-delay: 0.32s; }

.unit-card h3 {
    margin: 0;
    color: var(--accent);
    letter-spacing: 0.04em;
    transition: letter-spacing 0.3s ease;
}
.unit-card-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 0.5rem;
    margin-bottom: 0.6rem;
    border-bottom: 1px dashed var(--border);
    padding-bottom: 0.4rem;
}
.unit-tag { font-size: 0.85rem; color: var(--muted); font-style: italic; }

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--muted);
    padding: 1.5rem;
    border-top: 1px solid var(--border);
    margin-top: 2rem;
    font-size: 0.85rem;
    letter-spacing: 0.05em;
    transition: color 0.3s ease;
}
.footer:hover { color: var(--accent); }

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}