:root {
    color-scheme: dark;

    --bg: #111827;
    --surface: #1f2937;
    --surface-2: #0f172a;
    --surface-3: #111827;
    --border: #374151;

    --text: #f3f4f6;
    --text-muted: #9ca3af;

    --primary: #2563eb;
    --primary-hover: #1d4ed8;

    --success-bg: #14532d;
    --success-text: #dcfce7;

    --danger-bg: #7f1d1d;
    --danger-text: #fee2e2;

    --warning-bg: #78350f;
    --warning-text: #fef3c7;

    --info-bg: #1e3a8a;
    --info-text: #dbeafe;

    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);

    --container-width: 480px;
    --container-wide-width: 900px;

    --space-1: 0.35rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.5rem;
    --space-6: 2rem;
    --space-7: 3rem;
    --space-8: 4rem;

    --toast-width: 340px;
    --toast-duration: 3000ms;
    --font-family: Arial, sans-serif;
}

* {
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-family);
    background: var(--bg);
    color: var(--text);
}

.container {
    max-width: var(--container-width);
    margin: var(--space-8) auto;
    padding: var(--space-6);
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.wide-container {
    max-width: var(--container-wide-width);
    margin: var(--space-7) auto;
    padding: var(--space-6);
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

h1,
h2,
h3 {
    margin-top: 0;
}

p {
    line-height: 1.5;
}

a {
    color: #93c5fd;
}

.muted {
    color: var(--text-muted);
}

form {
    display: grid;
    gap: var(--space-4);
}

label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--space-1);
}

input[type="text"],
input[type="email"],
input[type="password"] {
    width: 100%;
    padding: 0.75rem 0.85rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--surface-3);
    color: var(--text);
}

input[type="checkbox"] {
    margin-right: var(--space-2);
}

button,
input[type="submit"] {
    padding: 0.8rem 1rem;
    border: none;
    border-radius: var(--radius-sm);
    background: var(--primary);
    color: white;
    font-weight: 700;
    cursor: pointer;
}

button:hover,
input[type="submit"]:hover {
    background: var(--primary-hover);
}

.field-errors {
    margin-top: var(--space-1);
    color: #fca5a5;
    font-size: 0.95rem;
}

.checkbox-row {
    display: flex;
    align-items: center;
}

.nav-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-4);
    margin-bottom: var(--space-5);
}

.inline-form {
    display: inline;
}

/* Toasts */

.toast-container {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    width: min(var(--toast-width), calc(100vw - 2rem));
}

.toast {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-sm);
    padding: 0.9rem 1rem 1rem 1rem;
    box-shadow: var(--shadow);
    cursor: pointer;
    animation: toast-in 180ms ease-out;
}

.toast--success {
    background: var(--success-bg);
    color: var(--success-text);
}

.toast--danger {
    background: var(--danger-bg);
    color: var(--danger-text);
}

.toast--warning {
    background: var(--warning-bg);
    color: var(--warning-text);
}

.toast--info {
    background: var(--info-bg);
    color: var(--info-text);
}

.toast__message {
    margin: 0;
    font-weight: 600;
    line-height: 1.4;
}

.toast__progress {
    position: absolute;
    left: 0;
    bottom: 0;
    height: 4px;
    width: 100%;
    background: rgba(255, 255, 255, 0.35);
    transform-origin: left center;
    animation: toast-progress linear forwards;
    animation-duration: var(--toast-duration);
}

.toast--closing {
    animation: toast-out 160ms ease-in forwards;
}

@keyframes toast-in {
    from {
        opacity: 0;
        transform: translateY(-8px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes toast-out {
    from {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
    to {
        opacity: 0;
        transform: translateY(-8px) scale(0.98);
    }
}

@keyframes toast-progress {
    from {
        transform: scaleX(1);
    }
    to {
        transform: scaleX(0);
    }
}