:root {
    --color-bg: #f1f5f9;
    --color-text: #1e293b;
    --color-muted: #64748b;
    --color-border: #e2e8f0;
    --color-accent: #0d9488;
    --color-accent-soft: #f0fdfa;
    --color-button-dark: #334155;
    --color-button-dark-hover: #1e293b;
    --color-danger: #dc2626;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    font-size: 20px;
    color: var(--color-text);
    background: var(--color-bg);
}

/* Header */
.header {
    background: #fff;
    border-bottom: 1px solid #e2e8f0;
    padding: 16px 24px;
}

.header-inner {
    max-width: 90%;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: #1e293b;
    font-weight: 900;
    font-size: 40px;
}

.logo svg {
    width: 40px;
    height: 40px;
    color: #0d9488;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.cart-link {
    position: relative;
    padding: 8px;
    color: #475569;
    text-decoration: none;
    border-radius: 4px;
}

.cart-link:hover {
    background: #f1f5f9;
}

.cart-link svg {
    width: 20px;
    height: 20px;
    display: block;
}

.cart-badge {
    position: absolute;
    top: 2px;
    right: 2px;
    min-width: 16px;
    height: 16px;
    padding: 0 4px;
    font-size: 15px;
    font-weight: 500;
    line-height: 16px;
    text-align: center;
    background: #cbd5e1;
    color: #334155;
    border-radius: 999px;
}

.btn {
    display: inline-block;
    padding: 8px 16px;
    font-size: 20px;
    font-weight: 500;
    text-decoration: none;
    border-radius: 4px;
    border: 1px solid;
    cursor: pointer;
}

.btn-signin {
    background: #e2e8f0;
    border-color: #cbd5e1;
    color: #1e293b;
}

.btn-signup {
    background: #475569;
    border-color: #475569;
    color: #fff;
}

.btn-signup:hover {
    background: #334155;
}

/* Login page - main card */
.main {
    max-width: 90%;
    margin: 0 auto;
    padding: 48px 24px;
}

.card {
    min-height: 600px;
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
    overflow: hidden;
    display: grid;
    grid-template-columns: 1fr 1fr;
}

@media (max-width: 768px) {
    .card {
        grid-template-columns: 1fr;
    }
}

.card-form {
    padding: 60px 80px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.card-form h1 {
    margin: 0 0 24px 0;
    font-size: 34px;
    font-weight: 700;
    color: #1e293b;
}

/* Form */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    color: #334155;
}

.form-group input {
    width: 100%;
    padding: 10px 12px;
    font-size: 20px;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    background: #fff;
    color: #1e293b;
}

.form-group input:focus {
    outline: none;
    border-color: #0d9488;
    box-shadow: 0 0 0 1px #0d9488;
}

.form-group input.error {
    border-color: #dc2626;
}

.form-group select {
    width: 100%;
    padding: 10px 12px;
    font-size: 20px;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    background: #fff;
    color: #1e293b;
}

.form-group select:focus {
    outline: none;
    border-color: #0d9488;
    box-shadow: 0 0 0 1px #0d9488;
}

.form-group select.error {
    border-color: #dc2626;
}

.form-group .error-message {
    margin-top: 4px;
    font-size: 13px;
    color: #dc2626;
}

.form-actions {
    margin-top: 8px;
}

.btn-submit {
    width: 100%;
    padding: 12px;
    font-size: 20px;
    font-weight: 500;
    color: #fff;
    background: #334155;
    border: none;
    border-radius: 6px;
    cursor: pointer;
}

.btn-submit:hover {
    background: #1e293b;
}

.btn-submit:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.forgot-link {
    display: inline-block;
    margin-top: 12px;
    font-size: 18px;
    color: #0d9488;
    text-decoration: none;
}

.forgot-link:hover {
    text-decoration: underline;
}

/* Card side - benefits */
.card-side {
    padding: 32px 48px;
    background: rgba(241, 245, 249, 0.8);
    border-top: 1px solid #e2e8f0;
}

@media (min-width: 769px) {
    .card-side {
        border-top: none;
        border-left: 1px solid #e2e8f0;
    }
}

.card-side h2 {
    margin: 0 0 8px 0;
    font-size: 30px;
    font-weight: 700;
    color: #1e293b;
}

.card-side .signup-link {
    margin-bottom: 24px;
}

.card-side .signup-link a {
    color: #0d9488;
    text-decoration: none;
}

.card-side .signup-link a:hover {
    text-decoration: underline;
}

.card-side .benefits {
    margin-top: 16px;
}

.card-side ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.card-side li {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    margin-bottom: 10px;
    font-size: 20px;
    color: #334155;
}

.card-side li::before {
    content: '';
    flex-shrink: 0;
    width: 6px;
    height: 6px;
    margin-top: 6px;
    background: #0d9488;
    border-radius: 50%;
}

/* Signup page */
.main-centered {
    max-width: 512px;
    margin: 0 auto;
    padding: 64px 24px;
    text-align: center;
}

.main-centered h1 {
    margin: 0 0 8px 0;
    font-size: 24px;
    font-weight: 700;
    color: #1e293b;
}

.main-centered p {
    margin: 0;
    color: #64748b;
}

.main-centered .back-link {
    display: inline-block;
    margin-top: 24px;
    color: #0d9488;
    text-decoration: none;
}

.main-centered .back-link:hover {
    text-decoration: underline;
}

/* Admin dashboard layout */
.admin-shell {
    min-height: 100vh;
    background: #f1f5f9;
}

.admin-main-nav {
    max-width: 90%;
    margin: 0 auto;
    padding: 0 30px;
    background: #ffffff;
    border-top: 1px solid #e2e8f0;
    border-bottom: 1px solid #e2e8f0;
    display: flex;
    align-items: stretch;
    gap: 4px;
    overflow-x: auto;
}

.admin-main-nav::-webkit-scrollbar {
    height: 6px;
}

.admin-main-nav::-webkit-scrollbar-thumb {
    background: #4b5563;
    border-radius: 999px;
}

.admin-nav-link {
    position: relative;
    flex: 0 0 auto;
    padding: 10px 18px 12px 18px;
    font-size: 20px;
    font-weight: 500;
    color: #1e293b;
    text-decoration: none;
    background: transparent;
    border-radius: 4px 4px 0 0;
    margin-top: 30px;
}

.admin-nav-link:hover {
    background: #f3f4f6;
}

.admin-nav-link--active {
    color: #0f172a;
    border-bottom: 3px solid #0d9488;
}

.admin-main {
    max-width: 90%;
    margin: 0 auto;
    padding: 24px;
}

.admin-card {
    background: #ffffff;
    border-radius: 12px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.08);
    padding: 24px 28px;
}

.admin-card-title {
    margin: 0 0 8px 0;
    font-size: 32px;
    font-weight: 700;
    color: #1e293b;
}

.admin-card-subtitle {
    margin: 0;
    color: var(--color-muted);
}

@media (max-width: 768px) {
    .admin-header-main {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .admin-main {
        padding: 16px;
    }

    .admin-card {
        padding: 20px;
    }
}

/* Admin tables & forms */
.admin-table-wrapper {
    margin-top: 20px;
    overflow-x: auto;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 16px;
}

.admin-table thead {
    background: #f9fafb;
}

.admin-table th,
.admin-table td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.admin-table th {
    font-weight: 600;
    color: var(--color-text);
}

.admin-table tbody tr:hover {
    background: #f3f4f6;
}

.admin-badge-muted {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 13px;
    background: #e5e7eb;
    color: #374151;
}

.admin-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.btn-secondary {
    border-color: var(--color-border);
    background: #ffffff;
    color: var(--color-text);
}

.btn-secondary:hover {
    background: #f3f4f6;
}

.btn-danger {
    border-color: var(--color-danger);
    background: #fee2e2;
    color: #b91c1c;
}

.btn-danger:hover {
    background: #fecaca;
}

.admin-form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px 24px;
}

.admin-form-footer {
    margin-top: 24px;
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

@media (max-width: 768px) {
    .admin-form-grid {
        grid-template-columns: 1fr;
    }
}