:root {
    --primary-gold: #D4AF37;
    --primary-gold-hover: #F3E5AB;
    --dark-bg: #0F172A;
    --card-bg: #1E293B;
    --text-light: #F8FAFC;
    --text-muted: #94A3B8;
    --border-color: #334155;
    --success: #10B981;
    --danger: #EF4444;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

body {
    background-color: var(--dark-bg);
    color: var(--text-light);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Typography */
h1, h2, h3, h4 { color: var(--text-light); font-weight: 600; }
.text-gold { color: var(--primary-gold); }

/* Forms */
.form-group { margin-bottom: 1.5rem; }

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    background-color: #0F172A;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    color: var(--text-light);
    transition: border-color 0.2s;
    font-size: 1rem;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-gold);
    box-shadow: 0 0 0 2px rgba(212, 175, 55, 0.2);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
    border: none;
    text-decoration: none;
    font-size: 0.9rem;
}

.btn-primary {
    background-color: var(--primary-gold);
    color: #000;
}

.btn-primary:hover { background-color: var(--primary-gold-hover); }

/* Login Page */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.login-card {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 1rem;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 25px 50px -12px rgba(0,0,0,0.5);
    border: 1px solid var(--border-color);
}

.login-header { text-align: center; margin-bottom: 2rem; }
.login-logo { font-size: 2rem; font-weight: 700; color: var(--primary-gold); letter-spacing: -1px; }

.alert { padding: 1rem; border-radius: 0.5rem; margin-bottom: 1.5rem; font-size: 0.875rem; }
.alert-danger { background-color: rgba(239,68,68,0.1); color: var(--danger); border: 1px solid rgba(239,68,68,0.2); }

/* ===== APP LAYOUT ===== */
.app-container { display: flex; flex: 1; }

.sidebar {
    width: 250px;
    min-width: 250px;
    background-color: var(--card-bg);
    border-right: 1px solid var(--border-color);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    transition: transform 0.28s ease;
}

.main-content { flex: 1; padding: 2rem; overflow-x: hidden; }

.sidebar-nav { list-style: none; margin-top: 1.5rem; }
.sidebar-nav li { margin-bottom: 0.25rem; }

.sidebar-nav a {
    display: block;
    padding: 0.7rem 1rem;
    color: var(--text-muted);
    text-decoration: none;
    border-radius: 0.5rem;
    transition: all 0.2s;
    font-size: 0.9rem;
}

.sidebar-nav a:hover, .sidebar-nav a.active {
    background-color: rgba(212,175,55,0.1);
    color: var(--primary-gold);
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
    flex-wrap: wrap;
    gap: 0.75rem;
}

/* ===== MOBILE TOP BAR ===== */
.mobile-topbar {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0;
    height: 54px;
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    z-index: 1001;
    align-items: center;
    padding: 0 1rem;
    gap: 0.75rem;
}

.mobile-hamburger {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-light);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0.35rem 0.6rem;
    border-radius: 0.4rem;
    line-height: 1;
    flex-shrink: 0;
}

.mobile-topbar-logo {
    flex: 1;
    font-weight: 700;
    color: var(--primary-gold);
    font-size: 1rem;
    letter-spacing: 0.06em;
}

.mobile-topbar-user {
    font-size: 0.72rem;
    color: var(--text-muted);
    background: var(--dark-bg);
    padding: 0.25rem 0.6rem;
    border-radius: 9999px;
    white-space: nowrap;
}

/* ===== SIDEBAR OVERLAY (mobile) ===== */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.65);
    z-index: 1000;
    cursor: pointer; /* required for iOS Safari click events on divs */
    -webkit-tap-highlight-color: transparent;
}

/* ===== MOBILE BREAKPOINT ===== */
@media (max-width: 768px) {

    /* Show mobile bar, push content down */
    .mobile-topbar { display: flex; }
    body { padding-top: 54px; }

    /* Sidebar: off-screen drawer */
    .sidebar {
        position: fixed;
        top: 0; left: 0;
        height: 100vh;
        z-index: 1002;
        transform: translateX(-100%);
        overflow-y: auto;
        width: 260px;
        min-width: 260px;
        padding-top: 1rem;
    }

    .sidebar.sidebar-open { transform: translateX(0); }
    .sidebar-overlay.sidebar-open { display: block; }

    /* Main fills full width */
    .main-content { padding: 0.875rem; width: 100%; }

    /* Page header stacks */
    .page-header { flex-direction: column; align-items: flex-start; }
    .page-header h2 { font-size: 1.1rem; }
    .page-header > div { display: flex; flex-wrap: wrap; gap: 0.5rem; }

    /* Login card */
    .login-card { padding: 1.25rem; overflow-x: auto; }

    /* All inline grids → single column */
    div[style*="grid-template-columns"] {
        grid-template-columns: 1fr !important;
    }

    /* Tables scroll horizontally */
    table { min-width: 480px; }
    .login-card { overflow-x: auto; }

    /* Buttons: easier to tap */
    .btn { padding: 0.65rem 1rem; font-size: 0.85rem; }

    /* Prevent iOS font zoom on inputs */
    .form-control, select.form-control, input.form-control, textarea.form-control {
        font-size: 16px !important;
        min-height: 44px;
    }

    /* Rates belt: horizontal scroll */
    .rates-belt { overflow-x: auto; flex-wrap: nowrap; -webkit-overflow-scrolling: touch; }
    .rates-belt-date { display: none; }
}

@media (max-width: 480px) {
    .main-content { padding: 0.75rem; }
    .login-card { padding: 1rem; border-radius: 0.75rem; }
}