:root {
    --bg-page: #f5f7fb;
    --bg-card: #ffffff;
    --border-subtle: #e5e7eb;
    --text-main: #111827;
    --text-muted: #6b7280;
    --primary: #2563eb;
    --primary-soft: #e0ecff;
    --primary-hover: #1d4ed8;
    --danger: #ef4444;
    --danger-soft: #fee2e2;
    --success: #16a34a;
    --success-soft: #dcfce7;
    --radius-lg: 18px;
    --radius-full: 999px;
    --shadow-soft: 0 16px 40px rgba(15, 23, 42, 0.08);
    --transition-fast: 150ms ease-out;
    --accent: #8b5cf6;
}

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

html, body {
    margin: 0;
    padding: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-page);
    color: var(--text-main);
}

/* Layout base */

body {
    min-height: 100vh;
}

.main-container {
    max-width: 1200px;
    margin: 0 auto 2rem auto;
    padding: 0 1.5rem;
}

/* Top bar / header */

.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem 0.75rem 1.5rem;
    margin-bottom: 0.5rem;
}

.app-header-left {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.app-logo {
    font-weight: 800;
    letter-spacing: 0.08em;
    font-size: 1.1rem;
    text-transform: uppercase;
    color: #6366f1;
}

.app-header-nav {
    display: flex;
    gap: 0.75rem;
}

.app-header-nav a {
    font-size: 0.9rem;
    padding: 0.4rem 0.9rem;
    border-radius: var(--radius-full);
    text-decoration: none;
    color: var(--text-muted);
    transition: background var(--transition-fast), color var(--transition-fast);
}

.app-header-nav a.active,
.app-header-nav a:hover {
    background: var(--primary-soft);
    color: var(--primary);
}

.app-header-right {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Generic buttons */

.btn-primary {
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: var(--radius-full);
    padding: 0.55rem 1.2rem;
    font-size: 0.9rem;
    cursor: pointer;
    font-weight: 500;
    box-shadow: 0 10px 25px rgba(37, 99, 235, 0.30);
    transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 18px 40px rgba(37, 99, 235, 0.35);
}

.btn-secondary {
    background: #f9fafb;
    color: var(--text-main);
    border-radius: var(--radius-full);
    padding: 0.55rem 1.2rem;
    border: 1px solid var(--border-subtle);
    font-size: 0.9rem;
    cursor: pointer;
    transition: background var(--transition-fast), border-color var(--transition-fast);
}

.btn-secondary:hover {
    background: #eef2ff;
    border-color: #c7d2fe;
}

.btn-outline {
    background: transparent;
    border-radius: var(--radius-full);
    border: 1px solid var(--primary);
    color: var(--primary);
    padding: 0.5rem 1.1rem;
    font-size: 0.9rem;
    cursor: pointer;
    font-weight: 500;
    text-decoration: none;
}

.btn-outline:hover {
    background: var(--primary-soft);
}

.btn-link {
    border: none;
    background: transparent;
    color: var(--primary);
    font-size: 0.85rem;
    padding: 0;
    cursor: pointer;
    text-decoration: none;
}

.btn-full {
    width: 100%;
}

/* Cards */

.card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
    padding: 1.25rem 1.4rem;
    margin-bottom: 1rem;
}

/* Page header */

.page-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    margin: 0 0 1rem 0;
    gap: 0.75rem;
}

.page-header h1 {
    margin: 0;
    font-size: 1.4rem;
}

.page-header p {
    margin: 0.15rem 0 0 0;
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Forms */

.form {
    display: block;
}

.form label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 0.2rem;
}

.form input[type="text"],
.form input[type="email"],
.form input[type="number"],
.form input[type="password"],
.form input[type="date"],
.form select,
.form textarea {
    width: 100%;
    padding: 0.5rem 0.7rem;
    border-radius: 0.7rem;
    border: 1px solid var(--border-subtle);
    font-size: 0.9rem;
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
    background: #f9fafb;
}

.form input:focus,
.form select:focus,
.form textarea:focus {
    border-color: #93c5fd;
    box-shadow: 0 0 0 1px rgba(59,130,246,0.2);
    background: #ffffff;
}

.form textarea {
    resize: vertical;
}

/* Grid helpers */

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.75rem;
}

/* Alerts */

.alert {
    border-radius: 0.75rem;
    padding: 0.6rem 0.8rem;
    font-size: 0.85rem;
    margin-bottom: 0.75rem;
}

.alert-success {
    background: var(--success-soft);
    color: var(--success);
}

.alert-error {
    background: var(--danger-soft);
    color: var(--danger);
}

/* Table */

.table-wrapper {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
    padding: 0.5rem 0.75rem;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

thead tr {
    border-bottom: 1px solid var(--border-subtle);
}

th, td {
    text-align: left;
    padding: 0.5rem 0.35rem;
}

th {
    font-weight: 600;
    color: var(--text-muted);
}

tbody tr:nth-child(even) {
    background: #f9fafb;
}

/* Status pills */

.status {
    display: inline-flex;
    align-items: center;
    padding: 0.15rem 0.55rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 500;
}

.status-draft {
    background: #e5e7eb;
    color: #374151;
}

.status-active {
    background: #dcfce7;
    color: #166534;
}

.status-paused {
    background: #fef3c7;
    color: #92400e;
}

.status-finished {
    background: #e5e7eb;
    color: #4b5563;
}

/* Layout helpers */

.two-columns {
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: 1rem;
}

.cards-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    gap: 1rem;
}

.header-actions {
    display: flex;
    gap: 0.5rem;
}

/* MARKETPLACE */

.market-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.market-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
    display: flex;
    overflow: hidden;
}

.market-card-image {
    width: 40%;
    object-fit: cover;
}

.market-card-body {
    padding: 1rem 1rem;
    flex: 1;
}

.market-card-body h2 {
    margin: 0 0 0.2rem 0;
    font-size: 1rem;
}

.market-location {
    margin: 0;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.market-type {
    margin: 0.4rem 0;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.market-price {
    margin: 0.4rem 0 0.6rem 0;
    font-size: 0.9rem;
}

/* Filters */

.market-filters {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr) minmax(0, 1fr) auto;
    gap: 0.75rem;
    align-items: flex-end;
}

.market-filters-actions {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

/* Login */

.login-wrapper {
    max-width: 420px;
    margin: 3rem auto;
    padding: 1.5rem;
    background: var(--bg-card);
    border-radius: 1.2rem;
    box-shadow: var(--shadow-soft);
}

/* Links / Guía interna */

.links-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
}

.links-section-title {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 0.35rem;
}

.links-list {
    list-style: none;
    padding: 0;
    margin: 0.2rem 0 0 0;
}

.links-list li {
    margin: 0.15rem 0;
}

.links-list a {
    font-size: 0.83rem;
    color: var(--primary);
    text-decoration: none;
}

.links-list a:hover {
    text-decoration: underline;
}

/* SSP Screens form enhancements */

.screen-form-wrapper {
    margin-top: 1rem;
}

.screen-form .card h2 {
    font-size: 1.05rem;
    margin-bottom: 0.25rem;
}

.field-hint {
    font-size: 0.8rem;
    color: #6b7280;
    margin-bottom: 0.75rem;
}

.screen-field-group {
    margin-bottom: 0.9rem;
}

.screen-field-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.btn-chip {
    margin-top: 0.35rem;
    display: inline-block;
    padding: 0.3rem 0.7rem;
    border-radius: 999px;
    border: 1px solid #e5e7eb;
    background: #f3f4ff;
    font-size: 0.8rem;
    cursor: pointer;
}

.btn-chip:hover {
    background: #e0e7ff;
    border-color: #c7d2fe;
}

.screen-image-preview {
    margin-bottom: 0.5rem;
    border-radius: 0.75rem;
    overflow: hidden;
    border: 1px solid #e5e7eb;
    max-height: 180px;
}

.screen-image-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.screen-form-actions {
    margin-top: 1rem;
    display: flex;
    gap: 0.75rem;
    justify-content: flex-end;
}

/* Responsive */

@media (max-width: 960px) {
    .two-columns,
    .cards-grid,
    .market-grid,
    .links-grid,
    .market-filters {
        grid-template-columns: minmax(0, 1fr);
    }
    .market-card {
        flex-direction: column;
    }
    .market-card-image {
        width: 100%;
        height: 180px;
    }
}