/* ═══════════════════════════════════════════════════════
   Base Styles — Reset, Global, Scrollbar
   ═══════════════════════════════════════════════════════ */

*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-regular);
    line-height: var(--line-height);
    color: var(--text-primary);
    background:
        radial-gradient(circle at top left, var(--ambient-1), transparent 32%),
        radial-gradient(circle at top right, var(--ambient-3), transparent 26%),
        linear-gradient(180deg, var(--ambient-2), var(--bg-secondary) 44%, var(--bg-tertiary) 100%);
    transition: var(--transition-colors);
    overflow: hidden;
    height: 100vh;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    background-size: 120px 120px;
    opacity: 0.18;
    mix-blend-mode: soft-light;
}

a {
    color: var(--accent-text);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--accent-hover);
}

img,
svg {
    display: block;
    max-width: 100%;
}

ul,
ol {
    list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    color: var(--text-primary);
}

h1 {
    font-size: var(--font-size-2xl);
}

h2 {
    font-size: var(--font-size-xl);
}

h3 {
    font-size: var(--font-size-lg);
}

h4 {
    font-size: var(--font-size-md);
}

/* ── Scrollbar (Apple-style thin) ─────────────────────── */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: var(--scrollbar-track);
}

::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-tertiary);
}

/* Firefox */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
}

/* ── Selection ────────────────────────────────────────── */
::selection {
    background: var(--accent-light);
    color: var(--text-primary);
}

/* ── Focus ────────────────────────────────────────────── */
:focus-visible {
    outline: 2px solid color-mix(in srgb, var(--accent) 80%, white 20%);
    outline-offset: 3px;
    border-radius: var(--radius-sm);
}

/* ── Reduced motion — respect the OS accessibility preference ──────────── */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
        scroll-behavior: auto !important;
    }
}

/* ── Utilities ────────────────────────────────────────── */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

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

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

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

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

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

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

.truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ── Fade animations ──────────────────────────────────── */
@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(8px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(12px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {

    0%,
    80%,
    100% {
        opacity: 0.3;
        transform: scale(0.8);
    }

    40% {
        opacity: 1;
        transform: scale(1);
    }
}

.fade-in {
    animation: fadeIn var(--transition-base) ease forwards;
}

.fade-in-up {
    animation: fadeInUp var(--transition-base) ease forwards;
}

@keyframes fadeOutDown {
    from {
        opacity: 1;
        transform: translateY(0);
    }

    to {
        opacity: 0;
        transform: translateY(8px);
    }
}

@keyframes fadeOut {
    from {
        opacity: 1;
    }

    to {
        opacity: 0;
    }
}