:root {
    color-scheme: dark light;

    --bg-primary: #1a1a1e;
    --bg-secondary: #222226;
    --bg-tertiary: #2a2a2f;
    --surface: #2a2a2f;
    --surface-elevated: #323238;
    --border-soft: #3a3a42;
    --border-strong: #4a4a55;
    --ink-strong: #e8e8ec;
    --ink-muted: #9898a0;
    --ink-subtle: #6e6e78;
    --accent: #4a9eff;
    --accent-strong: #2d7fe0;
    --accent-alt: #45c4a3;
    --danger: #e55454;
    --success: #3dba7a;
    --warning: #e8a040;
    --shadow-soft: 0 2px 8px rgba(0,0,0,0.4);
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --font-ui: "Segoe UI Variable", "SF Pro Display", "Bahnschrift", system-ui, sans-serif;
    --font-mono: "Cascadia Mono", "JetBrains Mono", "Consolas", monospace;
    --panel-header: #2e2e34;
    --panel-gap: 2px;
    --transport-bg: #1e1e22;
    --transport-height: 3.5rem;
}

@media (prefers-color-scheme: light) {
    :root {
        --bg-primary: #f2f2f4;
        --bg-secondary: #e8e8ec;
        --bg-tertiary: #dedee3;
        --surface: #ffffff;
        --surface-elevated: #f6f6f8;
        --border-soft: #d0d0d6;
        --border-strong: #b0b0b8;
        --ink-strong: #1a1a1e;
        --ink-muted: #4a4a55;
        --ink-subtle: #6e6e78;
        --accent: #2563eb;
        --accent-strong: #1d4ed8;
        --accent-alt: #0891b2;
        --danger: #c03939;
        --success: #128757;
        --warning: #c97c21;
        --shadow-soft: 0 2px 8px rgba(0, 0, 0, 0.1);
        --panel-header: #ededf0;
        --transport-bg: #e4e4e8;
    }
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
}

body {
    background: var(--bg-primary);
    color: var(--ink-strong);
    font-family: var(--font-ui);
    line-height: 1.42;
}

a {
    color: inherit;
    text-decoration: none;
}

button,
input,
select,
textarea {
    color: inherit;
    font: inherit;
}

/* ═══════════════════════════════════════════════════════════════
   App Loader - Shown during WASM initialization
   ═══════════════════════════════════════════════════════════════ */

.app-loader {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.loader-backdrop {
    position: absolute;
    inset: 0;
    background: var(--bg-primary);
}

.loader-content {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.25rem;
    padding: 2.5rem;
    background: var(--surface);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
    animation: loaderFadeIn 0.4s ease-out;
}

@keyframes loaderFadeIn {
    from {
        opacity: 0;
        transform: translateY(12px) scale(0.96);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.loader-icon {
    position: relative;
    width: 64px;
    height: 64px;
    color: var(--accent);
}

.loader-icon svg {
    width: 100%;
    height: 100%;
    animation: loaderBreathe 2s ease-in-out infinite;
}

@keyframes loaderBreathe {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.05); opacity: 0.85; }
}

.loader-pulse {
    position: absolute;
    inset: -8px;
    border-radius: 50%;
    background: var(--accent);
    opacity: 0;
    animation: loaderPulse 2s ease-out infinite;
}

@keyframes loaderPulse {
    0% {
        transform: scale(0.8);
        opacity: 0.5;
    }
    100% {
        transform: scale(1.6);
        opacity: 0;
    }
}

.loader-text {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--ink-strong);
    letter-spacing: -0.01em;
}

.loader-bar {
    width: 180px;
    height: 4px;
    background: var(--border-soft);
    border-radius: 2px;
    overflow: hidden;
}

.loader-bar-fill {
    height: 100%;
    width: 30%;
    background: linear-gradient(90deg, var(--accent), var(--accent-alt));
    border-radius: 2px;
    animation: loaderProgress 1.8s ease-in-out infinite;
}

@keyframes loaderProgress {
    0% {
        width: 0%;
        margin-left: 0%;
    }
    50% {
        width: 60%;
        margin-left: 20%;
    }
    100% {
        width: 0%;
        margin-left: 100%;
    }
}

.loader-status {
    font-size: 0.875rem;
    color: var(--ink-muted);
}

/* Hide loader once Blazor renders */
.app-loader:has(+ *:not(script):not(#blazor-error-ui)) {
    display: none;
}

/* Blazor error UI - hidden by default, shown on critical errors */
#blazor-error-ui {
    background: var(--danger);
    color: white;
    padding: 0.6rem 1rem;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    display: none;
}

#blazor-error-ui.visible {
    display: block;
}

#blazor-error-ui .reload {
    color: white;
    text-decoration: underline;
    margin-left: 0.5rem;
}

#blazor-error-ui .dismiss {
    cursor: pointer;
    position: absolute;
    right: 1rem;
}