/* ==========================================================================
   app.css — design system. Clean premium light: low saturation, ample
   whitespace, card hierarchy, NO gradients. RTL-first via logical
   properties (ARCHITECTURE §8).
   ========================================================================== */

:root {
    /* Low-saturation neutral palette */
    --color-bg: #f7f8f9;
    --color-surface: #ffffff;
    --color-border: #e4e7ea;
    --color-text: #2c3135;
    --color-text-muted: #6b7278;
    --color-primary: #3a5a6e;         /* desaturated petrol blue */
    --color-primary-hover: #314c5d;
    --color-primary-soft: #eef3f5;
    --color-success: #4a7d5e;
    --color-success-soft: #eef5f0;
    --color-error: #a4554f;
    --color-error-soft: #f9efee;
    --color-warning: #92763a;
    --color-warning-soft: #f8f3e8;
    --color-info: #4f6a86;
    --color-info-soft: #eef2f6;

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --shadow-card: 0 1px 2px rgba(44, 49, 53, 0.05), 0 1px 6px rgba(44, 49, 53, 0.04);

    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.5rem;
    --space-6: 2rem;
    --space-8: 3rem;

    --font-stack: "Segoe UI", "Noto Sans Arabic", "Noto Sans", Tahoma, Arial, sans-serif;
}

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

html { -webkit-text-size-adjust: 100%; }

body {
    margin: 0;
    background: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-stack);
    font-size: 1rem;
    line-height: 1.7;
}

.container {
    width: 100%;
    max-width: 72rem;
    margin-inline: auto;
    padding-inline: var(--space-5);
}

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

/* ---------- Header ---------------------------------------------------- */
.site-header {
    background: var(--color-surface);
    border-block-end: 1px solid var(--color-border);
}

.site-header__inner {
    display: flex;
    align-items: center;
    gap: var(--space-5);
    padding-block: var(--space-3);
}

.brand {
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--color-primary);
    text-decoration: none;
}

.site-nav { display: flex; gap: var(--space-4); }

.nav-link {
    color: var(--color-text-muted);
    text-decoration: none;
    font-size: 0.95rem;
}
.nav-link:hover { color: var(--color-primary); }

.site-header__side {
    margin-inline-start: auto;
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.user-name { font-size: 0.9rem; color: var(--color-text-muted); }

.inline-form { display: inline; }
.locale-switch { display: inline-flex; gap: var(--space-2); }
.locale-switch--center { justify-content: center; margin-block-start: var(--space-4); }

/* ---------- Main / footer --------------------------------------------- */
.main-content {
    padding-block: var(--space-8);
    min-height: 60vh;
}

.site-footer {
    border-block-start: 1px solid var(--color-border);
    padding-block: var(--space-5);
    font-size: 0.85rem;
}

.page-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-block: 0 var(--space-5);
}

/* ---------- Cards ------------------------------------------------------ */
.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    padding: var(--space-6);
}

.card__title {
    margin-block: 0 var(--space-2);
    font-size: 1.15rem;
    font-weight: 650;
}

/* ---------- Dashboard --------------------------------------------------- */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr));
    gap: var(--space-5);
}

.dashboard-section__header { margin-block-end: var(--space-4); }
.dashboard-count {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--color-primary);
    margin: 0;
}

/* ---------- Empty / loading / error states ------------------------------ */
.empty-state {
    text-align: center;
    padding-block: var(--space-6);
    color: var(--color-text-muted);
}
.empty-state__title { font-weight: 600; margin-block-end: var(--space-1); }

/* ---------- Alerts -------------------------------------------------------- */
.alert {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-3) var(--space-4);
    margin-block-end: var(--space-4);
    font-size: 0.95rem;
}
.alert--success { background: var(--color-success-soft); color: var(--color-success); border-color: var(--color-success); }
.alert--error   { background: var(--color-error-soft);   color: var(--color-error);   border-color: var(--color-error); }
.alert--warning { background: var(--color-warning-soft); color: var(--color-warning); border-color: var(--color-warning); }
.alert--info    { background: var(--color-info-soft);    color: var(--color-info);    border-color: var(--color-info); }

.alert__close {
    background: none;
    border: none;
    color: inherit;
    font-size: 1.1rem;
    cursor: pointer;
    padding: 0;
    line-height: 1;
}

/* ---------- Buttons -------------------------------------------------------- */
.btn {
    display: inline-block;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    padding: var(--space-2) var(--space-4);
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
    transition: background-color 120ms ease, color 120ms ease;
}
.btn--primary { background: var(--color-primary); color: #fff; }
.btn--primary:hover { background: var(--color-primary-hover); }
.btn--ghost { background: transparent; color: var(--color-primary); border-color: var(--color-border); }
.btn--ghost:hover { background: var(--color-primary-soft); }
.btn--sm { padding: var(--space-1) var(--space-3); font-size: 0.85rem; }
.btn--block { display: block; width: 100%; }

/* ---------- Forms ---------------------------------------------------------- */
.form-field { margin-block-end: var(--space-4); }
.form-label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    margin-block-end: var(--space-1);
}
.form-input {
    width: 100%;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: var(--space-2) var(--space-3);
    font-family: inherit;
    font-size: 1rem;
    background: var(--color-surface);
    color: var(--color-text);
}
.form-input:focus {
    outline: 2px solid var(--color-primary-soft);
    outline-offset: 1px;
    border-color: var(--color-primary);
}
.form-error {
    color: var(--color-error);
    font-size: 0.85rem;
    margin-block: var(--space-1) 0;
}

/* ---------- Auth pages ------------------------------------------------------- */
.auth-body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}
.auth-wrap { width: 100%; max-width: 26rem; padding: var(--space-5); }
.auth-brand { text-align: center; margin-block-end: var(--space-6); }
.auth-brand__name { font-size: 1.35rem; color: var(--color-primary); margin-block-end: var(--space-1); }
.auth-card { padding: var(--space-8); }

.error-card { text-align: center; }
.error-card__code {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin: 0 0 var(--space-2);
}

/* ---------- Responsive -------------------------------------------------------- */
@media (max-width: 40rem) {
    .site-header__inner { flex-wrap: wrap; gap: var(--space-3); }
    .card { padding: var(--space-4); }
    .auth-card { padding: var(--space-5); }
    .main-content { padding-block: var(--space-5); }
}