/* === iOS-Style Glassmorphism Add-on === */
:root {
    /* refined glass parameters */
    --glass-bg: color-mix(in srgb, var(--text) 7%, transparent);
    --glass-border: color-mix(in srgb, var(--text) 16%, transparent);
    --glass-highlight: rgba(255, 255, 255, .10);
    --glass-shadow: 0 10px 32px rgba(0, 0, 0, .35);
    --glass-radius: 18px;
    --glass-blur: 18px;
    --glass-sat: 140%;
    --glass-noise: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140' viewBox='0 0 140 140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3CfeComponentTransfer%3E%3CfeFuncA type='table' tableValues='0 0 .03 0'/%3E%3C/feComponentTransfer%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* generic glass surface */
.glass,
.panel,
.card,
.tile,
.lesson,
.stat,
.chip,
.hud,
.dialog {
    background: var(--glass-noise),
    var(--glass-bg);
    border: 1px solid var(--glass-border);
    overflow: hidden;
    border-radius: var(--glass-radius);
    box-shadow: inset 0 1px 0 var(--glass-highlight),
    0 1px 0 rgba(255, 255, 255, .02),
    var(--glass-shadow);
    backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat));
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat));
}

/* App bar (translucent, sticky) */
.hud {
    background: linear-gradient(180deg,
    color-mix(in srgb, var(--bg) 55%, transparent),
    color-mix(in srgb, var(--bg) 85%, transparent) 60%),
    var(--glass-noise);
    border-bottom: 1px solid var(--glass-border);
    border-radius: 0;
}

/* Panels with extra breathing room */
.panel {
    padding: 14px;
}

/* Buttons – iOS shine and lift */
.btn {
    border-radius: 1rem;
    transition: transform .15s ease, box-shadow .15s ease, background .2s ease;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, .08),
    0 6px 18px rgba(0, 0, 0, .28);
    background: linear-gradient(180deg,
    color-mix(in srgb, var(--text) 8%, transparent),
    color-mix(in srgb, var(--text) 4%, transparent));
}

/* crazy hover effect should be like glas ui 3d transformation with bounced curve without moving */
.btn:not([disabled]):hover{
    transform: scaleX(1.03) scaleY(0.98);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, .12),
    0 14px 26px rgba(0, 0, 0, .36);
    background: linear-gradient(180deg,
    color-mix(in srgb, var(--text) 12%, transparent),
    color-mix(in srgb, var(--text) 6%, transparent));
}
.squash:hover {
    cursor: pointer;
    transform: scale(1.01);
}

.btn[disabled] {
    opacity: .4;
    box-shadow: none;
    background: linear-gradient(180deg,
    color-mix(in srgb, var(--text) 5%, transparent),
    color-mix(in srgb, var(--text) 2%, transparent));
}

.btn[disabled]:hover {
    cursor: not-allowed;
}

.btn.primary {
    background: linear-gradient(180deg,
    color-mix(in srgb, var(--accent) 92%, transparent),
    color-mix(in srgb, var(--accent2) 70%, transparent));
    border-color: color-mix(in srgb, var(--accent) 60%, transparent);
    color: #051217;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, .18),
    0 10px 26px color-mix(in srgb, var(--accent) 35%, transparent);
}


/* Chips – subtle border, gentle glow */
.chip {
    background: linear-gradient(180deg,
    color-mix(in srgb, var(--text) 7%, transparent),
    color-mix(in srgb, var(--text) 4%, transparent));
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, .08);
}

/* Cards/tiles – subtle hover */
.card, .tile, .lesson {
    transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}

.card:hover, .tile:hover, .lesson:hover {
    box-shadow: 0 14px 34px rgba(0, 0, 0, .36);
    border-color: color-mix(in srgb, var(--accent) 28%, transparent);
}

/* Progress bar – glass fill */
.line {
    background: linear-gradient(180deg,
    color-mix(in srgb, var(--text) 8%, transparent),
    color-mix(in srgb, var(--text) 3%, transparent));
    border: 1px solid var(--glass-border);
    border-radius: 999px;
    overflow: hidden;
}

.line-fill {
    background: linear-gradient(90deg, var(--accent), var(--accent2));
    filter: saturate(130%);
}

/* Textareas / inputs in glass */
.input :deep(textarea),
:deep(.v-field__input) {
    background: linear-gradient(180deg,
    color-mix(in srgb, var(--text) 7%, transparent),
    color-mix(in srgb, var(--text) 3%, transparent));
    border: 1px solid var(--glass-border);
    border-radius: 1rem;
    color: var(--text);
    backdrop-filter: blur(var(--glass-blur));
}

:deep(.v-field--variant-outlined .v-field__outline) {
    display: none;
}

/* Dialog – rounder with stronger blur */
.dialog {
    border-radius: 22px;
    backdrop-filter: blur(22px) saturate(150%);
    -webkit-backdrop-filter: blur(22px) saturate(150%);
}

/* iOS-style range (slider) – track & thumb */
.chip.inline input[type="range"] {
    height: 24px;
    -webkit-appearance: none;
    appearance: none;
    background: transparent;
}

.chip.inline input[type="range"]::-webkit-slider-runnable-track {
    height: 6px;
    border-radius: 999px;
    background: linear-gradient(180deg,
    color-mix(in srgb, var(--text) 12%, transparent),
    color-mix(in srgb, var(--text) 5%, transparent));
    border: 1px solid var(--glass-border);
}

.chip.inline input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: linear-gradient(180deg, #fff, #dfe7ef);
    border: 1px solid rgba(0, 0, 0, .15);
    box-shadow: 0 2px 6px rgba(0, 0, 0, .35), inset 0 1px 0 rgba(255, 255, 255, .85);
}

.chip.inline input[type="range"]::-moz-range-track {
    height: 6px;
    border-radius: 999px;
    background: linear-gradient(180deg,
    color-mix(in srgb, var(--text) 12%, transparent),
    color-mix(in srgb, var(--text) 5%, transparent));
    border: 1px solid var(--glass-border);
}

.chip.inline input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: linear-gradient(180deg, #fff, #dfe7ef);
    border: 1px solid rgba(0, 0, 0, .15);
    box-shadow: 0 2px 6px rgba(0, 0, 0, .35), inset 0 1px 0 rgba(255, 255, 255, .85);
}

/* Snackbar – glassy toast */
:deep(.v-snackbar) {
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(16px) saturate(140%);
    -webkit-backdrop-filter: blur(16px) saturate(140%);
    background: linear-gradient(180deg,
    color-mix(in srgb, var(--accent) 22%, transparent),
    color-mix(in srgb, var(--bg2) 60%, transparent));
}

/* Focus ring – iOS style */
*:focus-visible {
    outline: 2px solid color-mix(in srgb, var(--accent) 60%, transparent);
    outline-offset: 2px;
    border-radius: 12px;
}

/* Reduced transparency if requested */
@media (prefers-reduced-transparency: reduce) {
    .glass,
    .panel,
    .card,
    .tile,
    .lesson,
    .stat,
    .chip,
    .hud,
    .dialog {
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
        background: color-mix(in srgb, var(--text) 10%, transparent);
    }
}