/* ============================================================
   EliteDrive — Base + Component styles
   Consumes tokens.css. No raw colors, sizes or shadows here —
   only custom properties. Keep components presentational;
   semantic concerns stay in markup.
   ============================================================ */

/* -------- Reset (minimal) ----------------------------------- */
*,
*::before,
*::after {
    box-sizing: border-box;
}

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

html {
    font-size: var(--font-size-base);
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

body {
    font-family: var(--font-family-base);
    font-size: var(--font-size-md);
    line-height: var(--line-height-base);
    color: var(--color-foreground);
    background-color: var(--color-background);
    background-image:
        radial-gradient(1200px 600px at 10% -10%, rgba(20, 23, 28, 0.06), transparent 60%),
        radial-gradient(900px 500px at 110% 10%, rgba(20, 23, 28, 0.04), transparent 60%);
    background-attachment: fixed;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

[data-theme="dark"] body {
    background-image:
        radial-gradient(1200px 600px at 10% -10%, rgba(255, 255, 255, 0.04), transparent 60%),
        radial-gradient(900px 500px at 110% 10%, rgba(255, 255, 255, 0.02), transparent 60%);
}

h1, h2, h3, h4, h5, h6 {
    margin: 0 0 var(--space-3) 0;
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    letter-spacing: var(--letter-spacing-tight);
    color: var(--color-foreground);
}
h1 { font-size: var(--font-size-3xl); }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-lg); }
h5 { font-size: var(--font-size-md); }
h6 { font-size: var(--font-size-sm); text-transform: uppercase; letter-spacing: var(--letter-spacing-wide); }

p {
    margin: 0 0 var(--space-3) 0;
    color: var(--color-foreground-muted);
}

a {
    color: var(--color-foreground);
    text-decoration: underline;
    text-decoration-color: var(--color-border-strong);
    text-underline-offset: 3px;
    transition: color var(--duration-fast) var(--ease-out),
                text-decoration-color var(--duration-fast) var(--ease-out);
}
a:hover {
    color: var(--color-primary-hover);
    text-decoration-color: currentColor;
}

hr {
    border: 0;
    border-top: 1px solid var(--color-divider);
    margin: var(--space-6) 0;
}

::selection {
    background: var(--color-accent-muted);
    color: var(--color-foreground);
}

/* -------- Focus ring ---------------------------------------- */
:where(a, button, input, select, textarea, [tabindex]):focus-visible {
    outline: 2px solid var(--color-focus-ring);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* ============================================================
   Glass surface (reusable primitive)
   ============================================================ */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur)) saturate(140%);
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(140%);
    border: 1px solid var(--glass-border-soft);
    box-shadow: var(--shadow-sm), var(--shadow-inset);
    border-radius: var(--radius-lg);
}
.glass--strong {
    background: var(--glass-bg-strong);
    backdrop-filter: blur(var(--glass-blur-strong)) saturate(150%);
    -webkit-backdrop-filter: blur(var(--glass-blur-strong)) saturate(150%);
}
.glass--sunken {
    background: var(--glass-bg-sunken);
}

/* ============================================================
   App Shell
   ============================================================ */
.app-shell {
    display: grid;
    grid-template-columns: var(--layout-sidebar-width) 1fr;
    grid-template-rows: var(--layout-navbar-height) 1fr;
    grid-template-areas:
        "sidebar navbar"
        "sidebar main";
    min-height: 100dvh;
}

.app-shell__navbar  { grid-area: navbar; }
.app-shell__sidebar { grid-area: sidebar; }
.app-shell__main {
    grid-area: main;
    padding: var(--space-6) var(--layout-gutter);
    max-width: var(--layout-content-max);
    width: 100%;
}

@media (max-width: 960px) {
    .app-shell {
        grid-template-columns: 1fr;
        grid-template-areas:
            "navbar"
            "main";
    }
    .app-shell__sidebar {
        position: fixed;
        inset: 0 auto 0 0;
        transform: translateX(-100%);
        transition: transform var(--duration-base) var(--ease-out);
        z-index: var(--z-navbar);
    }
    .app-shell[data-sidebar-open="true"] .app-shell__sidebar {
        transform: translateX(0);
    }
}

/* ============================================================
   Navbar
   ============================================================ */
.navbar {
    position: sticky;
    top: 0;
    z-index: var(--z-navbar);
    display: flex;
    align-items: center;
    gap: var(--space-4);
    height: var(--layout-navbar-height);
    padding: 0 var(--space-6);
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur)) saturate(140%);
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(140%);
    border-bottom: 1px solid var(--glass-border-soft);
}
.navbar__brand {
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-lg);
    text-decoration: none;
    color: var(--color-foreground);
    letter-spacing: var(--letter-spacing-tight);
}
.navbar__spacer { flex: 1; }
.navbar__actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

/* ============================================================
   Sidebar
   ============================================================ */
.sidebar {
    width: var(--layout-sidebar-width);
    height: 100dvh;
    padding: var(--space-6) var(--space-4);
    background: var(--glass-bg-sunken);
    backdrop-filter: blur(var(--glass-blur)) saturate(140%);
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(140%);
    border-right: 1px solid var(--glass-border-soft);
    overflow-y: auto;
}
.sidebar__section {
    margin-bottom: var(--space-6);
}
.sidebar__title {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-wide);
    color: var(--color-foreground-subtle);
    padding: 0 var(--space-3);
    margin-bottom: var(--space-2);
}
.sidebar__link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    color: var(--color-foreground-muted);
    text-decoration: none;
    transition: background var(--duration-fast) var(--ease-out),
                color var(--duration-fast) var(--ease-out);
    min-height: 40px;
}
.sidebar__link:hover {
    background: var(--color-accent-muted);
    color: var(--color-foreground);
}
.sidebar__link[aria-current="page"],
.sidebar__link.is-active {
    background: var(--color-primary);
    color: var(--color-on-primary);
}

/* ============================================================
   Card / File tile / Folder tile
   ============================================================ */
.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
    box-shadow: var(--shadow-xs);
    transition: box-shadow var(--duration-base) var(--ease-out),
                transform var(--duration-base) var(--ease-out);
}
.card--glass {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur)) saturate(140%);
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(140%);
    border-color: var(--glass-border-soft);
}
.card--interactive:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}
.card__title {
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-1);
}
.card__meta {
    font-size: var(--font-size-sm);
    color: var(--color-foreground-subtle);
}

.tile {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    padding: var(--space-4);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xs);
    transition: box-shadow var(--duration-base) var(--ease-out),
                transform var(--duration-base) var(--ease-out),
                border-color var(--duration-base) var(--ease-out);
    cursor: pointer;
    min-height: 140px;
}
.tile:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    border-color: var(--color-border-strong);
}
.tile__icon {
    width: 40px;
    height: 40px;
    display: grid;
    place-items: center;
    border-radius: var(--radius-md);
    background: var(--color-surface-sunken);
    color: var(--color-foreground-muted);
}
.tile__name {
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-md);
    color: var(--color-foreground);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.tile__meta {
    display: flex;
    justify-content: space-between;
    font-size: var(--font-size-xs);
    color: var(--color-foreground-subtle);
    font-variant-numeric: tabular-nums;
}

.tile-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--space-4);
}

/* ============================================================
   Data table (file list)
   ============================================================ */
.table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    font-size: var(--font-size-sm);
}
.table thead th {
    position: sticky;
    top: 0;
    background: var(--color-surface-alt);
    text-align: left;
    padding: var(--space-3) var(--space-4);
    font-weight: var(--font-weight-semibold);
    color: var(--color-foreground-muted);
    border-bottom: 1px solid var(--color-divider);
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-wide);
}
.table tbody td {
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid var(--color-divider);
    color: var(--color-foreground);
    font-variant-numeric: tabular-nums;
}
.table tbody tr:last-child td { border-bottom: 0; }
.table tbody tr {
    transition: background var(--duration-fast) var(--ease-out);
}
.table tbody tr:hover {
    background: var(--color-background-soft);
}
.table__cell--primary {
    font-weight: var(--font-weight-medium);
}
.table__cell--muted {
    color: var(--color-foreground-subtle);
}
.table__cell--numeric {
    text-align: right;
    font-variant-numeric: tabular-nums;
}

/* ============================================================
   Forms
   ============================================================ */
.form-field {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
}
.form-label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-foreground);
}
.form-label__required { color: var(--color-danger); margin-left: 2px; }

.form-control {
    width: 100%;
    min-height: 44px;
    padding: var(--space-2) var(--space-3);
    font-family: inherit;
    font-size: var(--font-size-md);
    color: var(--color-foreground);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: border-color var(--duration-fast) var(--ease-out),
                box-shadow var(--duration-fast) var(--ease-out),
                background var(--duration-fast) var(--ease-out);
}
.form-control::placeholder {
    color: var(--color-foreground-subtle);
}
.form-control:hover:not(:disabled) {
    border-color: var(--color-border-strong);
}
.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-focus-ring);
}
.form-control:disabled {
    background: var(--color-surface-sunken);
    color: var(--color-foreground-subtle);
    cursor: not-allowed;
    opacity: 0.7;
}
.form-control--invalid,
.form-control[aria-invalid="true"] {
    border-color: var(--color-danger);
}
.form-control--invalid:focus {
    box-shadow: 0 0 0 3px rgba(156, 74, 74, 0.25);
}

.form-help {
    font-size: var(--font-size-xs);
    color: var(--color-foreground-subtle);
}
.form-error {
    font-size: var(--font-size-xs);
    color: var(--color-danger);
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

textarea.form-control {
    min-height: 96px;
    resize: vertical;
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    min-height: 44px;
    padding: 0 var(--space-5);
    font-family: inherit;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    line-height: 1;
    color: var(--color-foreground);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    user-select: none;
    text-decoration: none;
    transition: background var(--duration-fast) var(--ease-out),
                border-color var(--duration-fast) var(--ease-out),
                color var(--duration-fast) var(--ease-out),
                transform var(--duration-fast) var(--ease-out),
                box-shadow var(--duration-fast) var(--ease-out);
}
.btn:hover:not(:disabled) {
    background: var(--color-surface-alt);
    border-color: var(--color-border-strong);
}
.btn:active:not(:disabled) {
    transform: scale(0.98);
}
.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn--primary {
    background: var(--color-primary);
    color: var(--color-on-primary);
    border-color: var(--color-primary);
}
.btn--primary:hover:not(:disabled) {
    background: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
}
.btn--primary:active:not(:disabled) {
    background: var(--color-primary-active);
}

.btn--ghost {
    background: transparent;
    border-color: transparent;
}
.btn--ghost:hover:not(:disabled) {
    background: var(--color-accent-muted);
    border-color: transparent;
}

.btn--danger {
    background: var(--color-danger);
    color: #FFFFFF;
    border-color: var(--color-danger);
}

.btn--sm { min-height: 36px; padding: 0 var(--space-4); font-size: var(--font-size-xs); }
.btn--lg { min-height: 52px; padding: 0 var(--space-6); font-size: var(--font-size-md); }
.btn--icon { min-width: 44px; padding: 0; }

/* ============================================================
   Modal
   ============================================================ */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(11, 13, 16, 0.45);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: var(--z-overlay);
    display: grid;
    place-items: center;
    padding: var(--space-4);
    animation: fade-in var(--duration-base) var(--ease-out);
}
.modal {
    background: var(--glass-bg-strong);
    backdrop-filter: blur(var(--glass-blur-strong)) saturate(150%);
    -webkit-backdrop-filter: blur(var(--glass-blur-strong)) saturate(150%);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl), var(--shadow-inset);
    width: min(560px, 100%);
    max-height: 90dvh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    z-index: var(--z-modal);
    animation: modal-in var(--duration-slow) var(--ease-spring);
}
.modal__header {
    padding: var(--space-5) var(--space-6);
    border-bottom: 1px solid var(--glass-border-soft);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.modal__title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin: 0;
}
.modal__body {
    padding: var(--space-5) var(--space-6);
    overflow-y: auto;
}
.modal__footer {
    padding: var(--space-4) var(--space-6);
    border-top: 1px solid var(--glass-border-soft);
    display: flex;
    justify-content: flex-end;
    gap: var(--space-2);
}

@keyframes fade-in {
    from { opacity: 0; }
    to   { opacity: 1; }
}
@keyframes modal-in {
    from { opacity: 0; transform: translateY(12px) scale(0.98); }
    to   { opacity: 1; transform: translateY(0)   scale(1); }
}

/* ============================================================
   Badges & Tags
   ============================================================ */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: 2px var(--space-2);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-pill);
    background: var(--color-surface-sunken);
    color: var(--color-foreground-muted);
    border: 1px solid var(--color-border);
}
.badge--success { background: var(--color-success-bg); color: var(--color-success); border-color: transparent; }
.badge--warning { background: var(--color-warning-bg); color: var(--color-warning); border-color: transparent; }
.badge--danger  { background: var(--color-danger-bg);  color: var(--color-danger);  border-color: transparent; }
.badge--info    { background: var(--color-info-bg);    color: var(--color-info);    border-color: transparent; }

/* ============================================================
   Dropzone & upload progress
   ============================================================ */
.dropzone {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-10) var(--space-6);
    border: 1.5px dashed var(--color-border-strong);
    border-radius: var(--radius-xl);
    background: var(--glass-bg-sunken);
    backdrop-filter: blur(var(--glass-blur)) saturate(140%);
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(140%);
    color: var(--color-foreground-muted);
    text-align: center;
    transition: border-color var(--duration-base) var(--ease-out),
                background var(--duration-base) var(--ease-out),
                color var(--duration-base) var(--ease-out);
    cursor: pointer;
}
.dropzone:hover,
.dropzone.is-dragover {
    border-color: var(--color-primary);
    background: var(--color-accent-muted);
    color: var(--color-foreground);
}
.dropzone__title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-foreground);
}
.dropzone__hint {
    font-size: var(--font-size-sm);
}
.dropzone__actions {
    display: flex;
    gap: var(--space-2);
    margin-top: var(--space-3);
}

.upload-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    margin-top: var(--space-4);
}
.upload-item {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: var(--space-1) var(--space-4);
    align-items: center;
    padding: var(--space-3) var(--space-4);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}
.upload-item__name {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.upload-item__status {
    font-size: var(--font-size-xs);
    color: var(--color-foreground-subtle);
    font-variant-numeric: tabular-nums;
}
.upload-item__bar {
    grid-column: 1 / -1;
    height: 4px;
    background: var(--color-surface-sunken);
    border-radius: var(--radius-pill);
    overflow: hidden;
}
.upload-item__fill {
    height: 100%;
    width: 0;
    background: var(--color-primary);
    transition: width var(--duration-base) var(--ease-out);
}
.upload-item--done .upload-item__fill { background: var(--color-success); }
.upload-item--error .upload-item__fill { background: var(--color-danger); }
.upload-item--error .upload-item__status { color: var(--color-danger); }

.upload-panel {
    position: fixed;
    right: var(--space-4);
    bottom: var(--space-4);
    width: 340px;
    max-height: 60vh;
    background: var(--glass-bg-strong);
    backdrop-filter: blur(var(--glass-blur-strong));
    -webkit-backdrop-filter: blur(var(--glass-blur-strong));
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    z-index: var(--z-toast);
    animation: upload-panel-in var(--duration-base) var(--ease-out);
}
.upload-panel__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-2) var(--space-4);
    border-bottom: 1px solid var(--color-divider);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-sm);
}
.upload-panel__close {
    background: transparent;
    border: 0;
    color: var(--color-foreground-muted);
    font-size: var(--font-size-xl);
    cursor: pointer;
    line-height: 1;
    padding: 0 var(--space-1);
}
.upload-panel__close:hover { color: var(--color-foreground); }
.upload-panel__list {
    padding: var(--space-2);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}
@keyframes upload-panel-in {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   Utilities
   ============================================================ */
.stack   { display: flex; flex-direction: column; gap: var(--space-4); }
.cluster { display: flex; flex-wrap: wrap; gap: var(--space-2); align-items: center; }
.grow    { flex: 1; }
.sr-only {
    position: absolute;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0,0,0,0);
    white-space: nowrap; border: 0;
}