/* ═══════════════════════════════════════════════════════════
   Vauban Web App — Base Styles
   Reset, typography, layout, animations
   ═══════════════════════════════════════════════════════════ */

/* ── Reset ───────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body {
    font-family: var(--font-sans);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow: hidden;
    height: 100vh;
}
a { color: inherit; text-decoration: none; }
button { cursor: pointer; }
img, svg { display: block; }
ul, ol { list-style: none; }
input, select, textarea, button { font-family: inherit; }
code { font-family: var(--font-mono); font-size: 0.88em; background: var(--color-bg); padding: 2px 6px; border-radius: 4px; }
[hidden] { display: none !important; }

.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;
}

/* ── Scrollbar ───────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-surface); }

/* ── App Layout ──────────────────────────────────── */
.app {
    display: flex;
    height: 100vh;
    width: 100vw;
    transition: padding-right var(--transition-base);
}
.app.ai-panel-open {
    padding-right: var(--ai-panel-active-width, var(--ai-panel-width));
}

@media (max-width: 1400px) {
    .app.ai-panel-open {
        padding-right: 0;
    }
}

/* ── Sidebar ─────────────────────────────────────── */
.sidebar {
    width: var(--sidebar-width);
    min-width: var(--sidebar-width);
    background: var(--color-bg-elevated);
    border-right: 1px solid var(--color-border-subtle);
    display: flex;
    flex-direction: column;
    z-index: 10;
}
.sidebar__header {
    padding: 18px 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    border-bottom: 1px solid var(--color-border-subtle);
    min-height: var(--header-height);
}
.sidebar__logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--color-text);
}
.sidebar__logo-icon { width: 26px; height: 26px; color: var(--color-primary); }
.sidebar__logo-text { font-size: 1.1rem; font-weight: 700; letter-spacing: -0.02em; }
.sidebar__env-badge {
    font-size: 0.6rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em;
    background: var(--color-primary-subtle); color: var(--color-primary-light);
    padding: 2px 8px; border-radius: var(--radius-full); margin-left: auto;
}
.sidebar__nav { flex: 1; padding: 12px 10px; overflow-y: auto; }
.sidebar__section-title {
    font-size: 0.65rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.1em;
    color: var(--color-text-muted); padding: 14px 12px 6px;
}
.sidebar__link {
    display: flex; align-items: center; gap: 10px;
    padding: 9px 12px; border-radius: var(--radius-md);
    color: var(--color-text-secondary); font-size: var(--text-sm); font-weight: 500;
    transition: all var(--transition-fast);
    border: none; background: none; width: 100%; text-align: left;
}
.sidebar__link:hover { background: var(--color-bg-card); color: var(--color-text); }
.sidebar__link.active { background: var(--color-primary-subtle); color: var(--color-primary-light); }
.sidebar__link svg, .sidebar__link .s-icon { width: 18px; height: 18px; flex-shrink: 0; }
.sidebar__divider { height: 1px; background: var(--color-border-subtle); margin: 8px 12px; }
.sidebar__footer { padding: 14px 16px; border-top: 1px solid var(--color-border-subtle); }
.sidebar__user { display: flex; align-items: center; gap: 10px; }
.sidebar__avatar {
    width: 34px; height: 34px; border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    display: flex; align-items: center; justify-content: center;
    font-size: 0.8rem; font-weight: 700; color: white; flex-shrink: 0;
}
.sidebar__user-info { display: flex; flex-direction: column; flex: 1; min-width: 0; }
.sidebar__user-name { font-size: 0.8rem; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sidebar__user-role { font-size: 0.68rem; color: var(--color-text-muted); }
.sidebar__logout {
    width: 100%; margin-top: 10px; padding: 7px 12px; border-radius: var(--radius-md);
    font-size: var(--text-xs); font-weight: 600; color: var(--color-text-muted);
    background: none; border: 1px solid var(--color-border-subtle);
    transition: all var(--transition-fast); font-family: var(--font-sans);
}
.sidebar__logout:hover { border-color: var(--color-danger); color: var(--color-danger); }

/* ── Main Area ───────────────────────────────────── */
.main { flex: 1; display: flex; flex-direction: column; overflow: hidden; min-width: 0; }
.main__header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 28px; border-bottom: 1px solid var(--color-border-subtle);
    min-height: var(--header-height); background: var(--color-bg);
}
.main__breadcrumb { display: flex; align-items: center; gap: 8px; font-size: var(--text-sm); color: var(--color-text-secondary); }
.main__breadcrumb-sep { color: var(--color-text-muted); font-size: var(--text-xs); }
.main__breadcrumb-active { color: var(--color-text); font-weight: 600; }
.main__actions { display: flex; gap: 8px; align-items: center; }
.main__content { flex: 1; overflow-y: auto; padding: 24px 28px; }

/* ── Page transitions ────────────────────────────── */
.page { display: none; }
.page.active { display: block; animation: pageIn 0.3s ease; }
@keyframes pageIn {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ── Auth gate (hide sidebar when unauthenticated) ── */
.app.auth-gate .sidebar { display: none; }
.app.auth-gate .main__header { display: none; }
.app.auth-gate .main__content { display: flex; align-items: center; justify-content: center; }

/* ── Auth screens ────────────────────────────────── */
.auth-card {
    background: var(--color-bg-card); border: 1px solid var(--color-border);
    border-radius: var(--radius-xl); padding: 48px; max-width: 420px; width: 100%;
    text-align: center; box-shadow: var(--shadow-lg);
}
.auth-card__icon { width: 48px; height: 48px; color: var(--color-primary); margin: 0 auto 20px; }
.auth-card__title { font-size: var(--text-2xl); font-weight: 700; margin-bottom: 8px; }
.auth-card__text { font-size: var(--text-sm); color: var(--color-text-secondary); margin-bottom: 28px; line-height: 1.6; }
.auth-card__status {
    margin: -10px 0 22px;
    font-size: var(--text-sm);
    line-height: 1.5;
    color: var(--color-text-secondary);
}
.auth-card__status[data-tone="danger"] { color: var(--color-danger); }
.auth-card__actions { display: flex; flex-direction: column; gap: 10px; }
.auth-card__links {
    display: flex;
    justify-content: center;
    gap: 14px;
    flex-wrap: wrap;
    margin-bottom: 18px;
    font-size: var(--text-sm);
}

/* ── Responsive ──────────────────────────────────── */
.sidebar__hamburger {
    display: none; width: 36px; height: 36px; background: none; border: none;
    color: var(--color-text-secondary); flex-direction: column; gap: 5px;
    align-items: center; justify-content: center; cursor: pointer;
}
.sidebar__hamburger span { display: block; width: 18px; height: 2px; background: currentColor; border-radius: 2px; transition: all var(--transition-fast); }

@media (max-width: 768px) {
    .sidebar {
        position: fixed; left: -100%; top: 0; height: 100vh;
        transition: left var(--transition-base); z-index: 100;
    }
    .sidebar.open { left: 0; }
    .sidebar__hamburger { display: flex; }
    .main__content { padding: 16px; }
}
@media (max-width: 768px) { .app.ai-panel-open { padding-right: 0; } }