:root {
    --color-primary: #2EBD59;
    --color-primary-dark: #22A04A;
    --color-primary-light: #E8F8EE;
    --color-text: #1A1A1A;
    --color-text-secondary: #6B7280;
    --color-text-muted: #9CA3AF;
    --color-bg: #FFFFFF;
    --color-bg-secondary: #F7F8FA;
    --color-border: #E5E7EB;
    --color-border-light: #F3F4F6;
    --color-error: #EF4444;
    --color-success: #22C55E;
    --color-warning: #F59E0B;
    --color-info: #3B82F6;

    --shadow-sm: 0 1px 3px rgba(0,0,0,.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,.10);
    --shadow-lg: 0 8px 24px rgba(0,0,0,.12);

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;

    --header-height: 68px;
    --nav-height: 52px;

    --transition: 0.2s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: 14px;
    line-height: 1.5;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

img {
    max-width: 100%;
    display: block;
}

input, select, textarea {
    font-family: inherit;
}

ul, ol {
    list-style: none;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
    white-space: nowrap;
}

.btn--primary {
    background: var(--color-primary);
    color: #fff;
}
.btn--primary:hover {
    background: var(--color-primary-dark);
}

.btn--outline {
    background: transparent;
    border-color: var(--color-primary);
    color: var(--color-primary);
}
.btn--outline:hover {
    background: var(--color-primary);
    color: #fff;
}

.btn--ghost {
    background: var(--color-bg-secondary);
    color: var(--color-text);
}
.btn--ghost:hover {
    background: var(--color-border);
}

.btn--danger {
    background: var(--color-error);
    color: #fff;
}
.btn--danger:hover {
    background: #DC2626;
}

.btn--full {
    width: 100%;
}

.btn--sm {
    padding: 6px 14px;
    font-size: 13px;
}

.btn--lg {
    padding: 14px 28px;
    font-size: 16px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 16px;
}

.form-group label {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.form-input {
    width: 100%;
    padding: 10px 14px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--color-text);
    background: var(--color-bg);
    transition: border-color var(--transition);
    outline: none;
}

.form-input:focus {
    border-color: var(--color-primary);
}

.form-input.is-invalid {
    border-color: var(--color-error);
}

.form-error {
    color: var(--color-error);
    font-size: 13px;
    min-height: 18px;
    margin-bottom: 12px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.form-group--row {
    flex-direction: row;
    align-items: center;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 13px;
}

.checkbox-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--color-primary);
}

.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.badge--new {
    background: var(--color-primary);
    color: #fff;
}

.badge--sale {
    background: var(--color-error);
    color: #fff;
}

.status-pending { color: var(--color-warning); }
.status-processing { color: var(--color-info); }
.status-shipped { color: var(--color-primary); }
.status-delivered { color: var(--color-success); }
.status-cancelled { color: var(--color-error); }

.page-title {
    font-size: 26px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 24px;
}

.section-title {
    font-size: 22px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}

.section-title a {
    color: var(--color-primary);
    display: flex;
    align-items: center;
}

.section-title a img {
    width: 20px;
    height: 20px;
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--color-text-secondary);
}

.empty-state img {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
    opacity: 0.4;
}

.empty-state p {
    font-size: 16px;
    margin-bottom: 20px;
}

.pagination {
    display: flex;
    align-items: center;
    gap: 6px;
    justify-content: center;
    margin-top: 32px;
}

.pagination a, .pagination span {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    border: 2px solid var(--color-border);
    color: var(--color-text);
    transition: var(--transition);
}

.pagination a:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.pagination span.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}