:root {
    --primary-green: #2d6a4f;
    --secondary-green: #40916c;
    --light-green: #d8f3dc;
    --accent-green: #52b788;
    --dark-green: #1b4332;
    --sidebar-width: 260px;
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f4f7f5;
    color: #1f2933;
    margin: 0;
    min-height: 100vh;
}

/* Auth pages */
.auth-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--dark-green), var(--secondary-green));
    padding: 1.5rem;
}

.auth-card {
    width: 100%;
    max-width: 440px;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    overflow: hidden;
}

.auth-header {
    background: var(--primary-green);
    color: #fff;
    padding: 2rem;
    text-align: center;
}

.auth-header h1 {
    font-size: 1.5rem;
    margin: 0 0 0.5rem;
}

.auth-body {
    padding: 2rem;
}

/* Layout */
.app-layout {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: var(--sidebar-width);
    background: var(--dark-green);
    color: #fff;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    overflow-y: auto;
    z-index: 1000;
    transition: transform 0.3s ease;
}

.sidebar-brand {
    padding: 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-brand h2 {
    font-size: 1.1rem;
    margin: 0;
    line-height: 1.4;
}

.sidebar-brand small {
    opacity: 0.75;
}

.sidebar-nav {
    padding: 1rem 0;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.85rem 1.5rem;
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    transition: background 0.2s, color 0.2s;
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
}

.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    padding: 1.5rem;
    width: calc(100% - var(--sidebar-width));
}

.top-bar {
    background: #fff;
    border-radius: 12px;
    padding: 1rem 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.page-title {
    margin: 0;
    color: var(--dark-green);
    font-size: 1.4rem;
}

.content-card {
    background: #fff;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    margin-bottom: 1.5rem;
}

/* Dashboard cards */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.25rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: #fff;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    border-left: 4px solid var(--accent-green);
}

.stat-card h3 {
    font-size: 2rem;
    margin: 0 0 0.25rem;
    color: var(--primary-green);
}

.stat-card p {
    margin: 0;
    color: #6b7280;
    font-size: 0.95rem;
}

.stat-card.seeds { border-left-color: #40916c; }
.stat-card.batches { border-left-color: #52b788; }
.stat-card.tests { border-left-color: #74c69d; }
.stat-card.certified { border-left-color: #1b4332; }

/* Forms */
.form-label {
    font-weight: 600;
    color: var(--dark-green);
}

.btn-primary {
    background-color: var(--primary-green);
    border-color: var(--primary-green);
}

.btn-primary:hover,
.btn-primary:focus {
    background-color: var(--dark-green);
    border-color: var(--dark-green);
}

.btn-outline-success {
    color: var(--primary-green);
    border-color: var(--primary-green);
}

.btn-outline-success:hover {
    background-color: var(--primary-green);
    border-color: var(--primary-green);
}

/* Tables */
.table-search {
    max-width: 320px;
    margin-bottom: 1rem;
}

.table thead {
    background: var(--light-green);
}

.table thead th {
    color: var(--dark-green);
    font-weight: 600;
    border-bottom: 2px solid var(--accent-green);
}

.badge-certified {
    background-color: #2d6a4f;
}

.badge-pending {
    background-color: #e9c46a;
    color: #1f2933;
}

.badge-rejected {
    background-color: #e76f51;
}

.verify-result {
    background: var(--light-green);
    border-radius: 12px;
    padding: 1.5rem;
    border: 1px solid var(--accent-green);
}

.mobile-toggle {
    display: none;
    background: var(--primary-green);
    color: #fff;
    border: none;
    padding: 0.5rem 0.75rem;
    border-radius: 8px;
}

/* Print styles */
@media print {
    .sidebar,
    .top-bar,
    .no-print,
    .mobile-toggle,
    .table-search {
        display: none !important;
    }

    .main-content {
        margin-left: 0;
        width: 100%;
        padding: 0;
    }

    .content-card {
        box-shadow: none;
        border: 1px solid #ddd;
        page-break-inside: avoid;
    }

    body {
        background: #fff;
    }
}

@media (max-width: 992px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.show {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
        width: 100%;
    }

    .mobile-toggle {
        display: inline-block;
    }
}