/* =============================================================
 * ForTrust dWallet — design system tokens + utilities
 * -------------------------------------------------------------
 * Loaded once via {% static 'dwallet/design.css' %} in the base
 * template. Prefers OS theme; respect prefers-color-scheme.
 * ============================================================= */

:root {
    /* Palette */
    --dw-bg:           #ffffff;
    --dw-surface:      #f8fafc;
    --dw-surface-2:    #f1f5f9;
    --dw-border:       #e2e8f0;
    --dw-text:         #0f172a;
    --dw-text-muted:   #475569;
    --dw-text-subtle:  #64748b;

    --dw-brand:        #2563eb;
    --dw-brand-hover:  #1d4ed8;
    --dw-brand-bg:     #eff6ff;

    --dw-success:      #16a34a;
    --dw-success-bg:   #dcfce7;
    --dw-warn:         #d97706;
    --dw-warn-bg:      #fef3c7;
    --dw-danger:       #dc2626;
    --dw-danger-bg:    #fee2e2;
    --dw-info:         #0891b2;
    --dw-info-bg:      #cffafe;

    /* Typography */
    --dw-font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI",
               Roboto, "Helvetica Neue", Arial, sans-serif;
    --dw-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo,
               Consolas, monospace;

    /* Spacing (8pt grid) */
    --dw-s-1: .25rem; --dw-s-2: .5rem;  --dw-s-3: .75rem;
    --dw-s-4: 1rem;   --dw-s-5: 1.5rem; --dw-s-6: 2rem;
    --dw-s-7: 3rem;   --dw-s-8: 4rem;

    /* Radii + elevation */
    --dw-r-sm: 4px; --dw-r: 8px; --dw-r-lg: 12px; --dw-r-xl: 18px; --dw-r-full: 9999px;
    --dw-shadow-sm: 0 1px 2px rgba(15, 23, 42, .06);
    --dw-shadow:    0 4px 16px rgba(15, 23, 42, .08);
    --dw-shadow-lg: 0 12px 40px rgba(15, 23, 42, .12);

    /* Motion */
    --dw-ease: cubic-bezier(.4, 0, .2, 1);
    --dw-dur:  160ms;
}

@media (prefers-color-scheme: dark) {
    :root {
        --dw-bg:           #0b1120;
        --dw-surface:      #111827;
        --dw-surface-2:    #1e293b;
        --dw-border:       #1f2937;
        --dw-text:         #e2e8f0;
        --dw-text-muted:   #94a3b8;
        --dw-text-subtle:  #64748b;
        --dw-brand:        #60a5fa;
        --dw-brand-hover:  #3b82f6;
        --dw-brand-bg:     #1e3a8a;
        --dw-success-bg:   #14532d;
        --dw-warn-bg:      #78350f;
        --dw-danger-bg:    #7f1d1d;
        --dw-info-bg:      #164e63;
    }
}

/* Explicit theme override via <html data-theme="dark|light"> */
html[data-theme="dark"] {
    color-scheme: dark;
    --dw-bg: #0b1120; --dw-surface: #111827; --dw-surface-2: #1e293b;
    --dw-border: #1f2937; --dw-text: #e2e8f0; --dw-text-muted: #94a3b8;
    --dw-brand: #60a5fa; --dw-brand-hover: #3b82f6; --dw-brand-bg: #1e3a8a;
}
html[data-theme="light"] {
    color-scheme: light;
    --dw-bg: #fff; --dw-surface: #f8fafc; --dw-surface-2: #f1f5f9;
    --dw-border: #e2e8f0; --dw-text: #0f172a; --dw-text-muted: #475569;
    --dw-brand: #2563eb; --dw-brand-hover: #1d4ed8; --dw-brand-bg: #eff6ff;
}

/* ==================================================
 * Base reset + typography
 * ================================================== */
*, *::before, *::after { box-sizing: border-box; }

html, body {
    background: var(--dw-bg);
    color: var(--dw-text);
    font-family: var(--dw-font);
    font-feature-settings: "cv02", "cv03", "cv04", "cv11";
    margin: 0;
    padding: 0;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 { color: var(--dw-text); letter-spacing: -.02em; line-height: 1.22; margin: 0 0 var(--dw-s-3); }
h1 { font-size: 2rem; font-weight: 700; }
h2 { font-size: 1.35rem; font-weight: 650; }
h3 { font-size: 1.1rem; font-weight: 600; }
p  { margin: 0 0 var(--dw-s-4); color: var(--dw-text-muted); }

a { color: var(--dw-brand); text-decoration: none; transition: color var(--dw-dur) var(--dw-ease); }
a:hover { color: var(--dw-brand-hover); }

code, pre { font-family: var(--dw-mono); font-size: .9em; }
pre {
    background: var(--dw-surface-2);
    color: var(--dw-text);
    padding: var(--dw-s-4) var(--dw-s-5);
    border-radius: var(--dw-r);
    overflow-x: auto;
}
code:not(pre > code) {
    background: var(--dw-surface-2);
    padding: 1px 6px;
    border-radius: var(--dw-r-sm);
}

/* ==================================================
 * Layout
 * ================================================== */
.dw-wrap { max-width: 1120px; margin: 0 auto; padding: 0 var(--dw-s-5); }
.dw-wrap--narrow { max-width: 820px; }
.dw-wrap--wide   { max-width: 1280px; }

.dw-grid { display: grid; gap: var(--dw-s-5); }
.dw-grid-2 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.dw-grid-3 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

/* ==================================================
 * Top navigation
 * ================================================== */
.dw-topbar {
    position: sticky; top: 0; z-index: 50;
    background: color-mix(in oklab, var(--dw-bg) 92%, transparent);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--dw-border);
}
.dw-topbar__inner {
    display: flex; align-items: center; justify-content: space-between;
    gap: var(--dw-s-5);
    padding: var(--dw-s-3) 0;
}
.dw-topbar__brand {
    display: flex; align-items: center; gap: var(--dw-s-2);
    font-weight: 700; font-size: 1rem; letter-spacing: -.01em;
    color: var(--dw-text); text-decoration: none;
}
.dw-topbar__brand__logo {
    width: 28px; height: 28px;
    background: linear-gradient(135deg, var(--dw-brand), #8b5cf6);
    border-radius: var(--dw-r);
    display: grid; place-items: center;
    color: #fff; font-size: 14px;
}
.dw-topbar__nav { display: flex; gap: var(--dw-s-2); align-items: center; }
.dw-topbar__nav a {
    color: var(--dw-text-muted); font-size: 14px; font-weight: 500;
    padding: var(--dw-s-2) var(--dw-s-3); border-radius: var(--dw-r);
    transition: background var(--dw-dur) var(--dw-ease), color var(--dw-dur) var(--dw-ease);
}
.dw-topbar__nav a:hover { color: var(--dw-text); background: var(--dw-surface-2); }
.dw-topbar__nav a.is-active { color: var(--dw-brand); background: var(--dw-brand-bg); }
@media (max-width: 760px) {
    .dw-topbar__nav a { padding: var(--dw-s-1) var(--dw-s-2); font-size: 13px; }
    .dw-topbar__brand span:last-child { display: none; }
}

/* ==================================================
 * Card
 * ================================================== */
.dw-card {
    background: var(--dw-surface);
    border: 1px solid var(--dw-border);
    border-radius: var(--dw-r-lg);
    padding: var(--dw-s-5);
    transition: box-shadow var(--dw-dur) var(--dw-ease), transform var(--dw-dur) var(--dw-ease);
}
.dw-card--hover:hover { box-shadow: var(--dw-shadow); transform: translateY(-2px); }
.dw-card--link { display: block; color: inherit; }
.dw-card--link:hover { text-decoration: none; color: inherit; }

.dw-card__icon {
    width: 44px; height: 44px;
    display: grid; place-items: center;
    font-size: 24px;
    background: var(--dw-brand-bg);
    border-radius: var(--dw-r);
    margin-bottom: var(--dw-s-3);
}
.dw-card__title  { font-size: 1.05rem; font-weight: 600; margin-bottom: var(--dw-s-1); color: var(--dw-text); }
.dw-card__desc   { font-size: .9rem; color: var(--dw-text-muted); margin-bottom: 0; }

/* ==================================================
 * Buttons + badges
 * ================================================== */
.dw-btn {
    display: inline-flex; align-items: center; gap: var(--dw-s-2);
    padding: var(--dw-s-2) var(--dw-s-4);
    font-family: inherit; font-size: .9rem; font-weight: 600;
    border-radius: var(--dw-r);
    border: 1px solid var(--dw-border); background: var(--dw-surface);
    color: var(--dw-text); text-decoration: none; cursor: pointer;
    transition: all var(--dw-dur) var(--dw-ease);
}
.dw-btn:hover { background: var(--dw-surface-2); transform: translateY(-1px); }
.dw-btn--primary { background: var(--dw-brand); border-color: var(--dw-brand); color: #fff; }
.dw-btn--primary:hover { background: var(--dw-brand-hover); border-color: var(--dw-brand-hover); color: #fff; }
.dw-btn--ghost { background: transparent; }
.dw-btn--lg { padding: var(--dw-s-3) var(--dw-s-5); font-size: 1rem; }

.dw-badge {
    display: inline-block; padding: 2px 9px; border-radius: var(--dw-r-full);
    font-size: 11px; font-weight: 700; letter-spacing: .04em; text-transform: uppercase;
}
.dw-badge--ok    { background: var(--dw-success-bg); color: var(--dw-success); }
.dw-badge--warn  { background: var(--dw-warn-bg); color: var(--dw-warn); }
.dw-badge--fail  { background: var(--dw-danger-bg); color: var(--dw-danger); }
.dw-badge--info  { background: var(--dw-info-bg); color: var(--dw-info); }
.dw-badge--brand { background: var(--dw-brand-bg); color: var(--dw-brand); }

/* ==================================================
 * Animations
 * ================================================== */
@keyframes dw-fade-in {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
}
@keyframes dw-pulse {
    0%, 100% { opacity: 1; }
    50%      { opacity: .5; }
}
@keyframes dw-spin {
    to { transform: rotate(360deg); }
}
@keyframes dw-check-pop {
    0%   { transform: scale(.6); opacity: 0; }
    70%  { transform: scale(1.15); opacity: 1; }
    100% { transform: scale(1); opacity: 1; }
}
@keyframes dw-shake {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-6px); }
    40%, 80% { transform: translateX(6px); }
}
.dw-anim-in     { animation: dw-fade-in .35s var(--dw-ease) both; }
.dw-anim-pulse  { animation: dw-pulse 1.6s ease-in-out infinite; }
.dw-anim-success{ animation: dw-check-pop .4s var(--dw-ease) both; }
.dw-anim-fail   { animation: dw-shake .35s var(--dw-ease) both; }

/* Skeleton loader */
.dw-skeleton {
    background: linear-gradient(90deg,
        var(--dw-surface-2) 0%,
        color-mix(in oklab, var(--dw-surface-2) 70%, var(--dw-border)) 50%,
        var(--dw-surface-2) 100%);
    background-size: 200% 100%;
    animation: dw-shimmer 1.6s ease-in-out infinite;
    border-radius: var(--dw-r-sm);
}
@keyframes dw-shimmer {
    0%   { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Progress checklist (used on verification pages) */
.dw-steps { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--dw-s-3); }
.dw-steps li {
    display: flex; align-items: center; gap: var(--dw-s-3);
    padding: var(--dw-s-3); border-radius: var(--dw-r);
    background: var(--dw-surface);
    border: 1px solid var(--dw-border);
    font-size: .9rem;
}
.dw-steps li.is-pending   { opacity: .6; }
.dw-steps li.is-running   { border-color: var(--dw-brand); }
.dw-steps li.is-done      { border-color: var(--dw-success); background: var(--dw-success-bg); }
.dw-steps li.is-fail      { border-color: var(--dw-danger); background: var(--dw-danger-bg); }
.dw-steps li .dw-steps__icon {
    width: 22px; height: 22px; display: grid; place-items: center;
    border-radius: var(--dw-r-full); font-size: 13px; font-weight: 700;
    background: var(--dw-surface-2);
}
.dw-steps li.is-done .dw-steps__icon { background: var(--dw-success); color: #fff; }
.dw-steps li.is-fail .dw-steps__icon { background: var(--dw-danger); color: #fff; }
.dw-steps li.is-running .dw-steps__icon {
    background: transparent;
    border: 2px solid var(--dw-brand);
    border-top-color: transparent;
    animation: dw-spin 700ms linear infinite;
}

/* ==================================================
 * Utilities
 * ================================================== */
.dw-mt-0 { margin-top: 0 !important; } .dw-mt-4 { margin-top: var(--dw-s-4); } .dw-mt-6 { margin-top: var(--dw-s-6); }
.dw-mb-0 { margin-bottom: 0 !important; } .dw-mb-3 { margin-bottom: var(--dw-s-3); } .dw-mb-6 { margin-bottom: var(--dw-s-6); }
.dw-muted  { color: var(--dw-text-muted); }
.dw-subtle { color: var(--dw-text-subtle); font-size: .85em; }
.dw-center { text-align: center; }
.dw-row { display: flex; gap: var(--dw-s-3); align-items: center; flex-wrap: wrap; }
.dw-spacer { flex: 1; }
.dw-pill {
    display: inline-flex; align-items: center; gap: var(--dw-s-1);
    padding: 2px 10px; border-radius: var(--dw-r-full);
    background: var(--dw-surface-2); color: var(--dw-text-muted);
    font-size: 12px;
}
.dw-kbd {
    font-family: var(--dw-mono); font-size: 12px;
    background: var(--dw-surface-2); padding: 2px 6px;
    border-radius: var(--dw-r-sm); border: 1px solid var(--dw-border);
}
