/*
 * Schüler-App PWA — Styles
 * Brutalist Rock aber etwas wärmer als Lehrer-App.
 */

@import url('https://fonts.googleapis.com/css2?family=Anton&family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@500;600;700&display=swap');

:root {
	--sa-bg:        #050505;
	--sa-bg-soft:   #0c0c0c;
	--sa-bg-elev:   #161616;
	--sa-bg-elev-2: #202020;
	--sa-bg-elev-3: #2a2a2a;

	--sa-line:      rgba(255,255,255,.06);
	--sa-line-2:    rgba(255,255,255,.14);
	--sa-line-3:    rgba(255,255,255,.22);

	--sa-text:      #f8f8f8;
	--sa-text-soft: rgba(248,248,248,.68);
	--sa-text-mute: rgba(248,248,248,.42);
	--sa-text-dim:  rgba(248,248,248,.28);

	--sa-brand:        #e4003a;
	--sa-brand-bright: #ff1f54;
	--sa-brand-d:      #b0002d;
	--sa-brand-glow:   0 0 24px rgba(228,0,58,.45);
	--sa-brand-glow-l: 0 0 14px rgba(228,0,58,.3);

	--sa-warn:  #f0b840;
	--sa-good:  #4ad987;
	--sa-info:  #5eb5ff;

	--sa-display: 'Anton', 'Impact', sans-serif;
	--sa-body:    'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
	--sa-mono:    'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

	--sa-r-sm: 4px;
	--sa-r:    8px;
	--sa-r-lg: 12px;
	--sa-nav-h: 64px;
	--sa-top-h: 56px;
	--sa-ease: cubic-bezier(.2, 0, 0, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html, body { background-color: var(--sa-bg); color: var(--sa-text); }
body {
	font-family: var(--sa-body); font-size: 15px; line-height: 1.55;
	-webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
	letter-spacing: -.005em;
	background-image: radial-gradient(ellipse at top, #0c0c0c 0%, #050505 60%);
	background-attachment: fixed;
}
button { font: inherit; color: inherit; }
img { max-width: 100%; display: block; }
a { color: var(--sa-brand); text-decoration: none; transition: color .15s var(--sa-ease); }
a:hover { color: var(--sa-brand-bright); }
::selection { background: var(--sa-brand); color: #fff; }
input, textarea, select { font-family: var(--sa-body); color: inherit; }

#sor-sa-app {
	min-height: 100vh; min-height: 100dvh;
	display: flex; flex-direction: column;
	padding-top: calc(var(--sa-top-h) + env(safe-area-inset-top));
	padding-bottom: calc(var(--sa-nav-h) + env(safe-area-inset-bottom));
}

.sa-top {
	position: fixed; inset: 0 0 auto 0;
	height: calc(var(--sa-top-h) + env(safe-area-inset-top));
	padding: env(safe-area-inset-top) 16px 0;
	display: flex; align-items: center; justify-content: space-between; gap: 8px;
	background: rgba(5,5,5,.88); backdrop-filter: blur(24px) saturate(140%);
	-webkit-backdrop-filter: blur(24px) saturate(140%);
	border-bottom: 1px solid var(--sa-line); z-index: 100;
}
.sa-top__title { font-family: var(--sa-display); font-size: 22px; letter-spacing: .01em; line-height: 1; text-transform: uppercase; }
.sa-top__sub { font-family: var(--sa-mono); font-size: 10px; color: var(--sa-text-mute); margin-top: 4px; letter-spacing: .14em; text-transform: uppercase; font-weight: 600; }
.sa-top__right { display: flex; align-items: center; gap: 6px; }

.sa-icon-btn {
	background: transparent; border: 0; color: var(--sa-text);
	width: 40px; height: 40px;
	display: inline-flex; align-items: center; justify-content: center;
	border-radius: var(--sa-r); cursor: pointer;
	transition: background .14s var(--sa-ease), transform .14s var(--sa-ease);
}
.sa-icon-btn:active { background: var(--sa-bg-elev); transform: scale(.94); }
.sa-icon-btn.sa-spinning svg { animation: sa-spin .6s linear; }

.sa-view {
	flex: 1; padding: 18px 16px 28px;
	max-width: 720px; width: 100%; margin: 0 auto;
}

.sa-nav {
	position: fixed; inset: auto 0 0 0;
	height: calc(var(--sa-nav-h) + env(safe-area-inset-bottom));
	padding-bottom: env(safe-area-inset-bottom);
	display: flex; align-items: stretch;
	background: rgba(5,5,5,.96); backdrop-filter: blur(24px) saturate(140%);
	-webkit-backdrop-filter: blur(24px) saturate(140%);
	border-top: 1px solid var(--sa-line-2); z-index: 100;
}
.sa-nav__btn {
	flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 3px;
	background: transparent; border: 0; color: var(--sa-text-mute);
	font-family: var(--sa-mono); font-size: 9px; font-weight: 600;
	letter-spacing: .12em; text-transform: uppercase; cursor: pointer;
	transition: color .14s var(--sa-ease); position: relative;
}
.sa-nav__btn svg { width: 22px; height: 22px; stroke: currentColor; fill: none; stroke-width: 2; }
.sa-nav__btn[aria-current="page"] { color: var(--sa-text); }
.sa-nav__btn[aria-current="page"]::before {
	content: ""; position: absolute; top: -1px; left: 30%; right: 30%; height: 2px;
	background: var(--sa-brand); box-shadow: var(--sa-brand-glow-l);
}
.sa-nav__btn[aria-current="page"] svg { stroke: var(--sa-brand); }
.sa-nav__btn:active { transform: scale(.94); }

/* ============================================ Cards ============================================ */

.sa-card {
	background: var(--sa-bg-elev);
	border: 1px solid var(--sa-line);
	border-radius: var(--sa-r);
	padding: 16px; position: relative;
}
.sa-card + .sa-card { margin-top: 10px; }

.sa-card--hero {
	border-color: rgba(228,0,58,.5);
	background: linear-gradient(180deg, rgba(228,0,58,.16), rgba(228,0,58,.03));
}
.sa-card--hero::before {
	content: ""; position: absolute; inset: 0 0 auto 0; height: 3px;
	background: var(--sa-brand); border-radius: var(--sa-r) var(--sa-r) 0 0;
	box-shadow: var(--sa-brand-glow);
}
.sa-card--hw {
	border-color: rgba(240,184,64,.4);
	background: linear-gradient(180deg, rgba(240,184,64,.07), rgba(240,184,64,.01));
}
.sa-card--hw::before {
	content: ""; position: absolute; inset: 0 0 auto 0; height: 2px;
	background: var(--sa-warn); border-radius: var(--sa-r) var(--sa-r) 0 0;
}

.sa-card__eyebrow {
	font-family: var(--sa-mono); font-size: 10px;
	letter-spacing: .18em; text-transform: uppercase;
	color: var(--sa-text-mute); margin-bottom: 8px; font-weight: 700;
}
.sa-card__title {
	font-family: var(--sa-display); font-size: 24px;
	letter-spacing: .005em; line-height: 1.1; margin: 0 0 4px;
	text-transform: uppercase;
}
.sa-card__sub { font-size: 13px; color: var(--sa-text-soft); line-height: 1.5; }
.sa-card__cta { margin-top: 14px; display: flex; gap: 10px; flex-wrap: wrap; }

.sa-stat-row {
	display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 10px;
	margin: 16px 0 20px;
}
.sa-stat {
	background: var(--sa-bg-elev); border: 1px solid var(--sa-line);
	border-radius: var(--sa-r); padding: 14px 12px;
}
.sa-stat__num { font-family: var(--sa-display); font-size: 30px; line-height: .9; letter-spacing: -.01em; }
.sa-stat__lbl { font-family: var(--sa-mono); font-size: 10px; color: var(--sa-text-mute); margin-top: 8px; letter-spacing: .12em; text-transform: uppercase; font-weight: 600; }

/* Lessons / History */
.sa-history__item {
	padding: 14px; background: var(--sa-bg-elev);
	border: 1px solid var(--sa-line); border-radius: var(--sa-r);
	margin-bottom: 10px;
}
.sa-history__head {
	display: flex; justify-content: space-between; align-items: baseline; gap: 8px;
	margin-bottom: 8px;
}
.sa-history__date { font-family: var(--sa-mono); font-size: 12px; font-weight: 700; letter-spacing: .04em; }
.sa-history__date small { color: var(--sa-text-mute); font-weight: 500; }
.sa-history__status {
	font-family: var(--sa-mono); font-size: 10px;
	padding: 3px 7px; border-radius: var(--sa-r-sm);
	font-weight: 700; letter-spacing: .1em; text-transform: uppercase;
}
.sa-history__status--done { background: rgba(74,217,135,.14); color: var(--sa-good); }
.sa-history__status--open { background: rgba(240,184,64,.18); color: var(--sa-warn); }
.sa-history__row { display: flex; gap: 10px; align-items: flex-start; font-size: 13px; line-height: 1.55; margin-top: 4px; color: var(--sa-text-soft); }
.sa-history__row strong { color: var(--sa-text); margin-right: 4px; font-weight: 600; }
.sa-history__row::before {
	content: ""; width: 4px; height: 4px; border-radius: 50%;
	background: var(--sa-brand); margin-top: 9px; flex: 0 0 4px;
}

/* Buttons */
.sa-btn {
	display: inline-flex; align-items: center; justify-content: center; gap: 8px;
	padding: 12px 18px; border-radius: var(--sa-r);
	font: inherit; font-family: var(--sa-mono); font-weight: 700;
	font-size: 12px; letter-spacing: .12em; text-transform: uppercase;
	cursor: pointer; transition: all .14s var(--sa-ease);
	border: 1px solid transparent; white-space: nowrap;
}
.sa-btn:active { transform: scale(.96); }
.sa-btn:disabled { opacity: .4; cursor: not-allowed; transform: none; }

.sa-btn--primary {
	background: var(--sa-brand); color: #fff;
	box-shadow: 0 0 0 1px rgba(228,0,58,.4), 0 4px 16px rgba(228,0,58,.25);
}
.sa-btn--primary:hover { background: var(--sa-brand-bright); }
.sa-btn--ghost {
	background: var(--sa-bg-elev); border-color: var(--sa-line-2); color: var(--sa-text);
}
.sa-btn--ghost:hover { background: var(--sa-bg-elev-2); border-color: var(--sa-line-3); }
.sa-btn--block { display: flex; width: 100%; }
.sa-btn--lg { padding: 14px 22px; font-size: 13px; }

/* Inputs */
.sa-input, .sa-textarea {
	width: 100%; padding: 13px 14px;
	background: var(--sa-bg-elev); border: 1px solid var(--sa-line);
	border-radius: var(--sa-r); color: var(--sa-text); font: inherit;
	resize: vertical;
}
.sa-textarea { min-height: 80px; line-height: 1.5; }
.sa-input:focus, .sa-textarea:focus {
	outline: none; border-color: var(--sa-brand);
	box-shadow: 0 0 0 3px rgba(228,0,58,.12);
}

/* Songs / Repertoire */
.sa-song {
	display: grid; grid-template-columns: auto 1fr auto; gap: 14px; align-items: center;
	padding: 14px;
	background: var(--sa-bg-elev); border: 1px solid var(--sa-line);
	border-radius: var(--sa-r); margin-bottom: 8px;
}
.sa-song__star { font-size: 24px; }
.sa-song__star.is-fav { color: #f0c040; }
.sa-song__star:not(.is-fav) { opacity: .3; }
.sa-song__title { font-size: 15px; font-weight: 600; }
.sa-song__artist { font-size: 13px; color: var(--sa-text-soft); }
.sa-song__notes { font-size: 12px; color: var(--sa-text-mute); margin-top: 4px; line-height: 1.5; }
.sa-song__diff { display: inline-block; margin-top: 6px; padding: 2px 7px; border-radius: var(--sa-r-sm); background: rgba(255,255,255,.06); font-family: var(--sa-mono); font-size: 10px; letter-spacing: .04em; text-transform: uppercase; color: var(--sa-text-mute); }
.sa-song__pdf {
	display: inline-flex; align-items: center; gap: 6px;
	padding: 8px 12px; border-radius: var(--sa-r-sm);
	background: rgba(228,0,58,.18); color: #fff;
	font-family: var(--sa-mono); font-size: 10px; font-weight: 700;
	letter-spacing: .12em; text-transform: uppercase;
	border: 1px solid rgba(228,0,58,.4);
}

/* Login */
.sa-login {
	flex: 1; display: flex; flex-direction: column;
	align-items: center; justify-content: center;
	padding: 40px 24px; text-align: center;
	min-height: 100vh; min-height: 100dvh;
}
.sa-login__logo {
	font-family: var(--sa-display); font-size: 64px;
	line-height: .85; color: var(--sa-text);
	letter-spacing: -.01em; text-transform: uppercase;
	text-shadow: 4px 4px 0 var(--sa-brand-d);
}
.sa-login__tag {
	font-family: var(--sa-mono); font-size: 11px;
	color: var(--sa-brand); margin-top: 16px;
	letter-spacing: .35em; text-transform: uppercase; font-weight: 700;
}
.sa-login__divider {
	margin: 24px auto 32px;
	height: 2px; width: 60px;
	background: var(--sa-brand); box-shadow: var(--sa-brand-glow-l);
}
.sa-login__form { width: 100%; max-width: 320px; display: flex; flex-direction: column; gap: 12px; }
.sa-login__msg { margin-top: 18px; font-size: 13px; color: var(--sa-text-soft); line-height: 1.6; min-height: 1em; }
.sa-login__tabs {
	display: flex; gap: 4px;
	background: var(--sa-bg-elev); border: 1px solid var(--sa-line);
	border-radius: var(--sa-r); padding: 3px;
	width: 100%; max-width: 320px; margin-bottom: 14px;
}
.sa-login__tab {
	flex: 1; padding: 10px; background: transparent; border: 0;
	color: var(--sa-text-mute);
	font-family: var(--sa-mono); font-size: 11px; font-weight: 700;
	letter-spacing: .12em; text-transform: uppercase; border-radius: 6px; cursor: pointer;
}
.sa-login__tab[aria-pressed="true"] { background: var(--sa-bg-elev-3); color: var(--sa-text); }
.sa-login__foot { margin-top: 18px; font-family: var(--sa-mono); font-size: 11px; letter-spacing: .08em; }
.sa-login__foot a { color: var(--sa-text-mute); text-decoration: underline; text-underline-offset: 3px; }

/* Hero (Dashboard "Heute") */
.sa-hero {
	padding: 18px; background: var(--sa-bg-elev);
	border: 1px solid var(--sa-line); border-radius: var(--sa-r);
	margin-bottom: 14px;
}
.sa-hero__greet {
	font-family: var(--sa-display); font-size: 28px;
	letter-spacing: .005em; text-transform: uppercase; line-height: 1;
}
.sa-hero__sub { font-family: var(--sa-mono); font-size: 11px; color: var(--sa-text-mute); margin-top: 6px; letter-spacing: .12em; text-transform: uppercase; }

/* Profile/Mehr */
.sa-profile-head {
	display: flex; gap: 14px; align-items: center;
	padding: 14px; background: var(--sa-bg-elev);
	border: 1px solid var(--sa-line); border-radius: var(--sa-r);
	margin-bottom: 14px;
}
.sa-profile-head__avatar {
	width: 56px; height: 56px; border-radius: 50%;
	background: var(--sa-brand); display: flex;
	align-items: center; justify-content: center; color: #fff;
	font-family: var(--sa-display); font-size: 22px;
	letter-spacing: -.02em; overflow: hidden;
	flex: 0 0 56px;
}
.sa-profile-head__avatar img { width: 100%; height: 100%; object-fit: cover; }
.sa-profile-head__name { font-size: 17px; font-weight: 700; }
.sa-profile-head__meta { font-family: var(--sa-mono); font-size: 11px; color: var(--sa-text-mute); margin-top: 4px; letter-spacing: .04em; }

/* Avatar-Picker */
.sa-avatar-grid {
	display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px;
}
.sa-avatar-pick {
	aspect-ratio: 1; padding: 6px; background: var(--sa-bg-elev);
	border: 2px solid var(--sa-line); border-radius: 50%; cursor: pointer;
	display: flex; align-items: center; justify-content: center;
	transition: border-color .14s, transform .14s;
}
.sa-avatar-pick:hover { border-color: var(--sa-line-2); }
.sa-avatar-pick[aria-pressed="true"] { border-color: var(--sa-brand); box-shadow: var(--sa-brand-glow-l); transform: scale(1.05); }
.sa-avatar-pick img { width: 100%; height: 100%; object-fit: cover; border-radius: 50%; }

/* Section header */
.sa-section-head {
	font-family: var(--sa-mono); font-size: 11px;
	color: var(--sa-text-mute);
	letter-spacing: .18em; text-transform: uppercase;
	margin: 22px 0 10px; font-weight: 700;
	display: flex; align-items: center; gap: 12px;
}
.sa-section-head::after { content: ""; flex: 1; height: 1px; background: var(--sa-line); }

/* Empty / Loading / Toast */
.sa-loading { text-align: center; padding: 60px 0; color: var(--sa-text-mute); }
.sa-spinner {
	display: inline-block; width: 18px; height: 18px;
	border: 2px solid var(--sa-line-2); border-top-color: var(--sa-brand);
	border-radius: 50%; animation: sa-spin .7s linear infinite;
}
@keyframes sa-spin { to { transform: rotate(360deg); } }
.sa-empty {
	text-align: center; padding: 80px 20px 60px; color: var(--sa-text-mute);
}
.sa-empty__icon { font-size: 48px; margin-bottom: 16px; opacity: .8; }
.sa-empty__title {
	font-family: var(--sa-display); font-size: 24px;
	letter-spacing: .01em; text-transform: uppercase;
	color: var(--sa-text); margin-bottom: 8px;
}
.sa-toast {
	position: fixed; bottom: calc(var(--sa-nav-h) + env(safe-area-inset-bottom) + 18px);
	left: 16px; right: 16px; padding: 14px 18px;
	background: var(--sa-bg-elev-2); border: 1px solid var(--sa-line-2);
	border-left: 4px solid var(--sa-text); border-radius: var(--sa-r);
	font-size: 14px; font-weight: 500; z-index: 200;
	box-shadow: 0 12px 40px rgba(0,0,0,.6);
	animation: sa-toast-in .2s var(--sa-ease);
}
.sa-toast--success { border-left-color: var(--sa-good); }
.sa-toast--error   { border-left-color: var(--sa-brand); }
@keyframes sa-toast-in { from { transform: translateY(20px); opacity: 0; } }

.sa-no-chrome .sa-top, .sa-no-chrome .sa-nav { display: none; }
.sa-no-chrome #sor-sa-app { padding-top: 0; padding-bottom: 0; }

/* Mood emoji + slider */
.sa-mood { display: flex; gap: 8px; }
.sa-mood__btn {
	flex: 1; padding: 14px 0;
	background: var(--sa-bg-elev); border: 1px solid var(--sa-line);
	border-radius: var(--sa-r); font-size: 28px; cursor: pointer;
}
.sa-mood__btn[aria-pressed="true"] {
	background: rgba(228,0,58,.15); border-color: var(--sa-brand);
	box-shadow: var(--sa-brand-glow-l); transform: scale(1.04);
}

/* Sticky footer with save */
.sa-sticky-footer {
	position: sticky; bottom: 0; margin: 24px -16px -24px;
	padding: 14px 16px calc(14px + env(safe-area-inset-bottom));
	background: linear-gradient(180deg, rgba(5,5,5,0) 0%, rgba(5,5,5,.96) 35%);
	display: flex; gap: 10px;
	backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
}