/* ==========================================================================
   web-uikit / layout.css
   Layout utilities, grid, sidebar, responsive
   Variables match Lovable app CSS system
   ========================================================================== */

/* ---------- Container ---------- */

.container {
    width: 100%;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--spacing-lg);
    padding-right: var(--spacing-lg);
}

.container-sm { max-width: 720px; }
.container-lg { max-width: 1400px; }

/* ---------- Sidebar (app dashboard) ---------- */

.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 260px;
    height: 100vh;
    background: var(--sidebar);
    border-right: 1px solid var(--sidebar-border);
    padding: var(--spacing-lg);
    overflow-y: auto;
    z-index: 50;
    display: flex;
    flex-direction: column;
}

.sidebar-logo {
    font-family: var(--font-heading);
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--sidebar-foreground);
    margin-bottom: var(--spacing-xl);
}

.sidebar-nav {
    flex: 1;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.6rem 0.75rem;
    font-size: var(--font-size-sm);
    color: var(--sidebar-foreground);
    opacity: 0.7;
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast), opacity var(--transition-fast);
    margin-bottom: 2px;
}

.sidebar-link:hover {
    background: var(--sidebar-accent);
    opacity: 1;
    color: var(--sidebar-foreground);
}

.sidebar-link.is-active {
    background: var(--sidebar-accent);
    opacity: 1;
    color: var(--sidebar-accent-foreground);
}

.sidebar-section-title {
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--sidebar-foreground);
    opacity: 0.5;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: var(--spacing-sm) 0.75rem;
    margin-top: var(--spacing-md);
}

/* ---------- Main Content ---------- */

.main-content {
    margin-left: 260px;
    padding: var(--spacing-xl) var(--spacing-2xl);
    min-height: 100vh;
}

/* ---------- Header / Nav (public pages) ---------- */

.header-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-xl);
    max-width: 1200px;
    margin: 0 auto;
}

.header-nav__logo {
    font-family: var(--font-heading);
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: #fff;
}

.header-nav__logo:hover {
    color: #fff;
}

.header-nav__links {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.header-nav__link {
    font-size: var(--font-size-sm);
    color: var(--neutral-400);
    font-weight: 500;
    transition: color var(--transition-fast);
}

.header-nav__link:hover {
    color: #fff;
}

.header-nav__actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* ---------- Section ---------- */

.section {
    padding: var(--spacing-3xl) 0;
}

.section + .section {
    border-top: 1px solid var(--border);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-title {
    font-family: var(--font-heading);
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--muted-foreground);
    max-width: 600px;
    margin: 0 auto;
}

/* ---------- Grid ---------- */

.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* ---------- Flex ---------- */

.flex {
    display: flex;
    gap: var(--spacing-md);
}

.flex-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
}

.flex-col {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.flex-wrap {
    flex-wrap: wrap;
}

/* ---------- Utilities ---------- */

.text-center { text-align: center; }
.text-right  { text-align: right; }
.text-muted  { color: var(--muted-foreground); }
.text-primary { color: var(--primary); }

.mt-0  { margin-top: 0; }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-0  { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.p-md  { padding: var(--spacing-md); }
.p-lg  { padding: var(--spacing-lg); }
.p-xl  { padding: var(--spacing-xl); }

.w-full  { width: 100%; }
.h-full  { height: 100%; }
.hidden  { display: none; }

/* ---------- Responsive ---------- */

@media (max-width: 1024px) {
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform var(--transition-base);
    }

    .sidebar.is-open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
        padding: var(--spacing-lg);
    }

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }

    .header-nav {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .header-nav__links {
        display: none;
    }

    .section {
        padding: var(--spacing-2xl) 0;
    }

    .section-title {
        font-size: var(--font-size-2xl);
    }

    h1 { font-size: var(--font-size-3xl); }
    h2 { font-size: var(--font-size-2xl); }
}

@media (max-width: 480px) {
    .container {
        padding-left: var(--spacing-md);
        padding-right: var(--spacing-md);
    }
}