/* ═══════════════════════════════════════════════════
   AquaUI — macOS-inspired design layer
   Frosted glass · SF aesthetic · Soft light
   Built on top of theme.css
   ═══════════════════════════════════════════════════ */

/* ── Aqua colour palette ────────────────────────── */
:root {
    --aqua-bg:            #f0f0f5;
    --aqua-surface:       rgba(255, 255, 255, 0.72);
    --aqua-surface-hover: rgba(255, 255, 255, 0.88);
    --aqua-text:          #1d1d1f;
    --aqua-text-secondary:#6e6e73;
    --aqua-text-tertiary: #aeaeb2;
    --aqua-border:        rgba(0, 0, 0, 0.08);
    --aqua-border-focus:  rgba(0, 122, 255, 0.5);

    /* Traffic light */
    --aqua-red:    #ff5f57;
    --aqua-amber:  #ffbd2e;
    --aqua-green:  #28c840;

    /* Aqua blues */
    --aqua-blue:         #007aff;
    --aqua-blue-light:   #409cff;
    --aqua-blue-dark:    #0056cc;
    --aqua-blue-bg:      rgba(0, 122, 255, 0.08);
    --aqua-blue-bg-hover:rgba(0, 122, 255, 0.14);

    /* Glass */
    --glass-bg:      rgba(255, 255, 255, 0.55);
    --glass-bg-dark: rgba(30, 30, 35, 0.65);
    --glass-border:  rgba(255, 255, 255, 0.18);
    --glass-blur:    20px;
    --glass-blur-lg: 40px;

    /* Aqua shadows — soft, layered */
    --aqua-shadow-xs: 0 0.5px 1px    rgba(0,0,0,0.04), 0 0.5px 2px rgba(0,0,0,0.06);
    --aqua-shadow-sm: 0 1px 3px      rgba(0,0,0,0.06), 0 1px 6px rgba(0,0,0,0.04);
    --aqua-shadow-md: 0 4px 12px     rgba(0,0,0,0.08), 0 2px 6px rgba(0,0,0,0.04);
    --aqua-shadow-lg: 0 8px 30px     rgba(0,0,0,0.10), 0 4px 10px rgba(0,0,0,0.06);
    --aqua-shadow-xl: 0 20px 60px    rgba(0,0,0,0.12), 0 8px 20px rgba(0,0,0,0.06);

    /* Aqua radius — softer */
    --aqua-radius-sm:  8px;
    --aqua-radius-md:  12px;
    --aqua-radius-lg:  16px;
    --aqua-radius-xl:  20px;
    --aqua-radius-pill: 9999px;
}

/* ── Aqua Light Mode ─────────────────────────────── */
.aqua-light {
    --bg:               var(--aqua-bg);
    --surface:          var(--aqua-surface);
    --surface-hover:    var(--aqua-surface-hover);
    --text:             var(--aqua-text);
    --text-secondary:   var(--aqua-text-secondary);
    --text-muted:       var(--aqua-text-tertiary);
    --border:           var(--aqua-border);
    --border-hover:     rgba(0,0,0,0.14);
    --border-active:    var(--aqua-border-focus);
    --shadow-sm:        var(--aqua-shadow-xs);
    --shadow-md:        var(--aqua-shadow-md);
    --shadow-lg:        var(--aqua-shadow-lg);
    --shadow-glow:      0 0 24px rgba(0,122,255,0.12);
}

/* ── Glass surfaces ──────────────────────────────── */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--aqua-radius-lg);
}

.glass-dark {
    background: var(--glass-bg-dark);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--aqua-radius-lg);
}

.glass-heavy {
    background: rgba(255,255,255,0.78);
    backdrop-filter: blur(var(--glass-blur-lg));
    -webkit-backdrop-filter: blur(var(--glass-blur-lg));
    border: 1px solid var(--glass-border);
    border-radius: var(--aqua-radius-xl);
}

/* ── Traffic lights ──────────────────────────────── */
.traffic-lights {
    display: flex;
    gap: 8px;
    padding: 4px 0;
}

.traffic-light {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: inline-block;
    position: relative;
}

.traffic-light::after {
    content: '';
    position: absolute;
    inset: 2px;
    border-radius: 50%;
    background: linear-gradient(180deg, rgba(255,255,255,0.55), transparent);
}

.traffic-light.red   { background: var(--aqua-red); }
.traffic-light.amber { background: var(--aqua-amber); }
.traffic-light.green { background: var(--aqua-green); }

/* ── Aqua buttons ────────────────────────────────── */
.aqua-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 20px;
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--aqua-radius-pill);
    border: none;
    cursor: pointer;
    transition: all 0.15s ease;
    letter-spacing: -0.01em;
    user-select: none;
    white-space: nowrap;
}

.aqua-btn-primary {
    background: var(--aqua-blue);
    color: #fff;
    box-shadow: 0 1px 3px rgba(0,122,255,0.25);
}
.aqua-btn-primary:hover {
    background: var(--aqua-blue-light);
    box-shadow: 0 2px 8px rgba(0,122,255,0.35);
}
.aqua-btn-primary:active {
    background: var(--aqua-blue-dark);
    transform: scale(0.985);
}

.aqua-btn-secondary {
    background: var(--aqua-blue-bg);
    color: var(--aqua-blue);
}
.aqua-btn-secondary:hover {
    background: var(--aqua-blue-bg-hover);
}

.aqua-btn-ghost {
    background: transparent;
    color: var(--aqua-text-secondary);
}
.aqua-btn-ghost:hover {
    background: rgba(0,0,0,0.04);
    color: var(--aqua-text);
}

.aqua-btn-lg {
    padding: 12px 28px;
    font-size: 16px;
}

/* ── Aqua card ───────────────────────────────────── */
.aqua-card {
    background: var(--aqua-surface);
    border: 1px solid var(--aqua-border);
    border-radius: var(--aqua-radius-lg);
    padding: 24px;
    box-shadow: var(--aqua-shadow-sm);
    transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.aqua-card:hover {
    box-shadow: var(--aqua-shadow-md);
    transform: translateY(-2px);
}

/* ── Aqua input ──────────────────────────────────── */
.aqua-input {
    width: 100%;
    padding: 10px 16px;
    font-size: 14px;
    font-family: inherit;
    color: var(--aqua-text);
    background: rgba(255,255,255,0.65);
    border: 1px solid var(--aqua-border);
    border-radius: var(--aqua-radius-sm);
    outline: none;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.aqua-input:focus {
    border-color: var(--aqua-border-focus);
    box-shadow: 0 0 0 3px rgba(0,122,255,0.12);
}

.aqua-input::placeholder {
    color: var(--aqua-text-tertiary);
}

/* ── Aqua window chrome ──────────────────────────── */
.aqua-window {
    background: var(--aqua-surface);
    border: 1px solid var(--aqua-border);
    border-radius: var(--aqua-radius-xl);
    box-shadow: var(--aqua-shadow-xl);
    overflow: hidden;
}

.aqua-window__titlebar {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: rgba(255,255,255,0.45);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-bottom: 1px solid var(--aqua-border);
}

.aqua-window__title {
    font-size: 13px;
    font-weight: 600;
    color: var(--aqua-text-secondary);
    flex: 1;
    text-align: center;
}

.aqua-window__body {
    padding: 24px;
}

/* ── Aqua segmented control ──────────────────────── */
.aqua-segmented {
    display: inline-flex;
    background: rgba(0,0,0,0.04);
    border-radius: var(--aqua-radius-sm);
    padding: 2px;
}

.aqua-segmented__item {
    padding: 6px 16px;
    font-size: 13px;
    font-weight: 500;
    color: var(--aqua-text-secondary);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.15s ease;
    border: none;
    background: none;
}

.aqua-segmented__item.active {
    background: #fff;
    color: var(--aqua-text);
    box-shadow: var(--aqua-shadow-xs);
}

/* ── Aqua toolbar ────────────────────────────────── */
.aqua-toolbar {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(255,255,255,0.55);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-bottom: 1px solid var(--aqua-border);
}

/* ── Aqua badge ──────────────────────────────────── */
.aqua-badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 10px;
    font-size: 11px;
    font-weight: 600;
    border-radius: var(--aqua-radius-pill);
    background: var(--aqua-blue-bg);
    color: var(--aqua-blue);
}

/* ── SF-style typography ─────────────────────────── */
.sf-display {
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.1;
}

.sf-title {
    font-weight: 600;
    letter-spacing: -0.01em;
}

.sf-body {
    font-weight: 400;
    letter-spacing: -0.01em;
    line-height: 1.5;
}

/* ── Aqua animations ─────────────────────────────── */
@keyframes aqua-fade-in {
    from { opacity: 0; transform: translateY(10px) scale(0.98); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes aqua-slide-up {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
}

.aqua-animate-in {
    animation: aqua-fade-in 0.4s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.aqua-stagger > * {
    opacity: 0;
    animation: aqua-slide-up 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.aqua-stagger > *:nth-child(1) { animation-delay: 0.05s; }
.aqua-stagger > *:nth-child(2) { animation-delay: 0.10s; }
.aqua-stagger > *:nth-child(3) { animation-delay: 0.15s; }
.aqua-stagger > *:nth-child(4) { animation-delay: 0.20s; }
.aqua-stagger > *:nth-child(5) { animation-delay: 0.25s; }
.aqua-stagger > *:nth-child(6) { animation-delay: 0.30s; }