/* GUST-G - Space 4X Theme */
:root {
    --bg-primary: #0f1320;
    --bg-secondary: #161b2e;
    --bg-tertiary: #1f2533;
    --text-primary: #e8e8e8;
    --text-secondary: #a0a8b8;
    --accent-gold: #d4af37;
    --accent-blue: #4a90d9;
    --border-color: #2a3142;
}

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

body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}

/* Header */
header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

header h1 {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--accent-gold);
    letter-spacing: 1px;
}

.stats-bar {
    display: flex;
    gap: 2rem;
    font-size: 0.95rem;
}

.stats-bar .stat {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.stats-bar .stat-value {
    font-weight: 600;
    color: var(--accent-gold);
}

/* Main Layout */
.main-container {
    display: flex;
    min-height: calc(100vh - 120px);
}

/* Left Navigation */
nav {
    width: 160px;
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    padding: 1.25rem 0;
    transition: width 0.2s ease;
    overflow: hidden;
}

nav ul {
    list-style: none;
}

nav li a {
    display: block;
    padding: 0.65rem 1.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.2s ease;
    border-left: 3px solid transparent;
}

nav li a:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border-left-color: var(--accent-gold);
}

nav li a.active {
    background-color: var(--bg-tertiary);
    color: var(--accent-gold);
    border-left-color: var(--accent-gold);
}

nav.collapsed {
    width: 48px;
}

nav.collapsed li a {
    padding: 0.65rem 0.35rem;
    text-align: center;
    font-size: 1.15rem;
}

nav.collapsed li a span.label {
    display: none;
}

nav.collapsed #nav-toggle {
    font-size: 1.4rem;
}

/* Main Content */
main {
    flex: 1;
    padding: 2rem;
    max-width: 1200px;
}

/* Cards */
.card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.card h2 {
    color: var(--accent-gold);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

/* Buttons */
button {
    background-color: var(--accent-gold);
    color: #0f1320;
    border: none;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
}

button:hover {
    background-color: #e8c872;
    transform: translateY(-1px);
}

button:active {
    transform: translateY(0);
}

/* Footer */
footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 1rem 2rem;
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Utility */
.text-muted {
    color: var(--text-secondary);
}

.highlight {
    color: var(--accent-gold);
    font-weight: 600;
}

/* User Bar in Header */
.user-bar {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.user-bar a {
    color: var(--accent-gold);
    text-decoration: none;
    transition: color 0.2s ease;
}

.user-bar a:hover {
    color: #e8c872;
    text-decoration: underline;
}

.logout-btn {
    background-color: #911515;
    color: white;
    padding: 0.35rem 0.75rem;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 500;
    transition: background-color 0.2s ease;
}

.logout-btn:hover {
    background-color: #c41313;
    color: white;
    text-decoration: none;
}

.content-link {
    color: var(--accent-gold);
    text-decoration: none;
    transition: color 0.2s ease, text-decoration 0.2s ease;
}

.content-link:hover {
    color: #e8c872;
    text-decoration: underline;
}

.content-list {
    padding-left: 1.5rem;
    margin: 0.5rem 0 0 0;
    list-style-position: outside;
}

.content-list li {
    margin-bottom: 0.35rem;
    color: var(--text-primary);
}

.card h3 {
    margin-top: 1.75rem;
}

.card h3:first-of-type {
    margin-top: 1rem;
}

.form-label {
    display: block;
    margin-bottom: 0.25rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.form-input {
    width: 100%;
    padding: 0.6rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 4px;
    font-size: 1rem;
    margin-bottom: 1rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-input:focus {
    outline: none;
    border-color: var(--accent-gold);
    box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.15);
}

.form-help {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: -0.5rem;
    margin-bottom: 1.25rem;
}

.checkbox-container {
    margin-bottom: 1.25rem;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.checkbox-container input[type="checkbox"] {
    accent-color: var(--accent-gold);
    width: 1rem;
    height: 1rem;
    cursor: pointer;
}

.form-disclaimer {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.4;
}

.terms-link {
    color: var(--accent-gold);
    text-decoration: none;
    font-weight: 500;
}

.terms-link:hover {
    text-decoration: underline;
    color: #e8c872;
}

.alert {
    margin-bottom: 1rem;
    padding: 0.75rem 1rem;
    border-radius: 6px;
    font-size: 0.95rem;
}

.alert-danger {
    background: #3a1f1f;
    border: 1px solid #5c2a2a;
    color: #ff6b6b;
}

/* Leaderboard Table */
.leaderboard-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 0.5rem;
}

.leaderboard-table th,
.leaderboard-table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.leaderboard-table th {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.leaderboard-table .rank-col {
    width: 70px;
    text-align: center;
    color: var(--accent-gold);
    font-weight: 600;
}

.leaderboard-table .presses-col {
    text-align: right;
    font-weight: 600;
    color: var(--accent-gold);
}

.leaderboard-table tbody tr:hover {
    background-color: var(--bg-tertiary);
}

.leaderboard-table .highlight-row {
    background-color: rgba(212, 175, 55, 0.1);
}

.leaderboard-table .highlight-row:hover {
    background-color: rgba(212, 175, 55, 0.15);
}

/* ========================================
   Empire / Planet Overview — Compact for 50+ planets
   ======================================== */

.system-group {
    background-color: var(--bg-secondary);
    border: 2px solid var(--accent-blue);
    border-radius: 10px;
    padding: 1rem 1.25rem;
    margin-bottom: 1.25rem;
}

.system-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.4rem;
}

.system-header h3 {
    color: var(--accent-blue);
    font-size: 1.15rem;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.system-badge {
    font-size: 0.68rem;
    padding: 0.15rem 0.55rem;
    border-radius: 9999px;
    background-color: #052e16;
    color: #4ade80;
    font-weight: 700;
    letter-spacing: 0.3px;
    white-space: nowrap;
    align-self: flex-start;
    margin-top: 0.15rem;
}

.planet-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(152px, 1fr));
    gap: 0.6rem;
}

.planet-card {
    display: block;
    text-decoration: none;
    color: inherit;
    background-color: #161b2b;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.5rem 0.65rem;
    transition: border-color 0.12s ease, transform 0.12s ease, box-shadow 0.12s ease;
}

.planet-card:hover {
    border-color: var(--accent-gold);
    transform: translateY(-2px);
    box-shadow: 0 6px 14px rgba(0, 0, 0, 0.25);
}

.planet-type {
    font-size: 0.65rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.08rem;
    font-weight: 600;
}

.planet-card h3 {
    font-size: 0.9rem;
    margin: 0 0 0.3rem 0;
    line-height: 1.15;
    color: var(--text-primary);
}

.planet-resources {
    display: flex;
    flex-direction: column;
    gap: 0.12rem;
}

.planet-resources .resource {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.71rem;
    line-height: 1.1;
}

.res-label {
    color: var(--text-muted);
    font-weight: 500;
}

.highlight {
    font-weight: 700;
    color: var(--accent-gold);
    font-feature-settings: "tnum";
}

.resource-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1rem;
}

.resource-table th,
.resource-table td {
    padding: 0.5rem 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.buildings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 0.75rem;
}

.building-card {
    background-color: #161b2b;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.65rem 0.75rem;
}

.building-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}

.level {
    color: var(--accent-gold);
    font-weight: 600;
}

.upgrade-btn {
    width: 100%;
    font-size: 0.85rem;
}

.resource-table.compact {
    font-size: 0.9rem;
    width: 100%;
    max-width: 520px;
}

.resource-table.compact th,
.resource-table.compact td {
    padding: 0.35rem 0.6rem;
}

/* Planet Detail */
.planet-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.rename-form {
    margin-bottom: 1.25rem;
    display: flex;
    gap: 0.5rem;
    max-width: 420px;
}

.rename-input {
    flex: 1;
    max-width: 320px;
    font-size: 0.95rem;
}

.rename-btn {
    padding: 0.45rem 1rem;
}

.section-header {
    margin: 1.5rem 0 0.5rem 0;
    font-size: 1.1rem;
}

.slots-info {
    margin-bottom: 0.75rem;
    font-size: 0.9rem;
}

.buildings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 0.75rem;
}

.building-card {
    background-color: #161b2b;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.65rem 0.75rem;
    cursor: pointer;
    transition: border-color 0.12s ease, transform 0.12s ease, box-shadow 0.12s ease;
}

.building-card:hover {
    border-color: var(--accent-gold);
    transform: translateY(-2px);
    box-shadow: 0 6px 14px rgba(0, 0, 0, 0.25);
}

.building-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.35rem;
}

.building-stats {
    font-size: 0.72rem;
    line-height: 1.3;
    color: var(--text-secondary);
}

.building-stats div {
    margin-bottom: 0.1rem;
}

.build-new {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 90px;
    text-align: center;
}

.build-new .plus {
    font-size: 3rem;
    line-height: 1;
    margin-bottom: 0.3rem;
    color: var(--accent-gold);
}

.build-new .slot-text {
    font-size: 0.8rem;
}

.modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--bg-secondary);
    padding: 2rem;
    border-radius: 12px;
    max-width: 420px;
    width: 90%;
}

.modal pre {
    background: #0f1320;
    padding: 1rem;
    border-radius: 6px;
    font-size: 0.85rem;
    white-space: pre-wrap;
    margin: 1rem 0;
}

.modal .cancel-btn {
    margin-top: 1rem;
}

.build-options {
    display: grid;
    gap: 0.5rem;
}