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

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --bg: #f1f5f9;
    --card-bg: #ffffff;
    --text: #1e293b;
    --text-light: #64748b;
    --border: #e2e8f0;
    --success: #16a34a;
    --danger: #dc2626;
    --warning: #f59e0b;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    background: var(--primary);
    color: white;
    padding: 0 20px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    min-height: 60px;
    flex-wrap: wrap;
    gap: 10px;
    padding: 10px 0;
}

header h1 {
    font-size: 1.2rem;
    white-space: nowrap;
}

#header-nav {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

#user-greeting {
    font-size: 0.9rem;
    opacity: 0.9;
    margin-right: 8px;
}

.nav-btn {
    background: rgba(255,255,255,0.15);
    color: white;
    border: 1px solid rgba(255,255,255,0.3);
    padding: 6px 14px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: background 0.2s;
}

.nav-btn:hover { background: rgba(255,255,255,0.25); }
.nav-btn.active { background: rgba(255,255,255,0.3); }

.btn-outline {
    background: transparent;
    border-color: rgba(255,255,255,0.5);
}

main {
    flex: 1;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 20px;
}

footer {
    text-align: center;
    padding: 15px;
    color: var(--text-light);
    font-size: 0.85rem;
    border-top: 1px solid var(--border);
}

.hidden { display: none !important; }

/* AUTH */
.auth-container {
    max-width: 400px;
    margin: 60px auto;
    background: var(--card-bg);
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

.tabs {
    display: flex;
    gap: 0;
    margin-bottom: 24px;
    border-bottom: 2px solid var(--border);
}

.tab {
    flex: 1;
    padding: 10px;
    border: none;
    background: none;
    font-size: 1rem;
    cursor: pointer;
    color: var(--text-light);
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: all 0.2s;
}

.tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
    font-weight: 600;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 4px;
    color: var(--text-light);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 0.95rem;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}

.btn-primary {
    background: var(--primary);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 0.95rem;
    cursor: pointer;
    transition: background 0.2s;
    width: 100%;
}

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

.btn-sm {
    padding: 6px 12px;
    font-size: 0.8rem;
    width: auto;
}

.btn-success { background: var(--success); }
.btn-success:hover { background: #15803d; }
.btn-danger { background: var(--danger); }
.btn-danger:hover { background: #b91c1c; }
.btn-warning { background: var(--warning); color: #1e293b; }

/* SPOTS */
.add-spot-form {
    background: var(--card-bg);
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 20px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.add-spot-form h3 { margin-bottom: 12px; }

.form-row {
    display: flex;
    gap: 12px;
    align-items: flex-end;
    flex-wrap: wrap;
}

.form-row .form-group { flex: 1; min-width: 150px; margin-bottom: 0; }
.form-row .btn-primary { width: auto; height: 42px; white-space: nowrap; }

.spots-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--card-bg);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.spots-table th,
.spots-table td {
    padding: 12px 14px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    font-size: 0.9rem;
}

.spots-table th {
    background: #f8fafc;
    font-weight: 600;
    color: var(--text-light);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.spots-table tr:hover { background: #f8fafc; }

.tg-link {
    color: #0088cc;
    text-decoration: none;
    font-weight: 500;
}

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

.info-text {
    text-align: center;
    color: var(--text-light);
    padding: 40px;
    font-size: 1.1rem;
}

/* Owner spot card */
.spot-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

.spot-card-info h4 { margin-bottom: 4px; }
.spot-card-info p { color: var(--text-light); font-size: 0.85rem; }

.spot-card-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    align-items: center;
}

.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-available { background: #dcfce7; color: #166534; }
.badge-unavailable { background: #fee2e2; color: #991b1b; }

/* CHAT */
.chat-layout {
    display: flex;
    height: calc(100vh - 180px);
    background: var(--card-bg);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.chat-sidebar {
    width: 280px;
    border-right: 1px solid var(--border);
    overflow-y: auto;
    flex-shrink: 0;
}

.chat-sidebar h3 {
    padding: 16px;
    border-bottom: 1px solid var(--border);
    font-size: 0.95rem;
}

.conv-item {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    cursor: pointer;
    transition: background 0.2s;
}

.conv-item:hover { background: #f8fafc; }
.conv-item.active { background: #eff6ff; border-left: 3px solid var(--primary); }

.conv-item-name {
    font-weight: 600;
    font-size: 0.9rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.conv-item-preview {
    font-size: 0.8rem;
    color: var(--text-light);
    margin-top: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.unread-badge {
    background: var(--primary);
    color: white;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    flex-shrink: 0;
}

.chat-main {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.chat-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-light);
}

.chat-header {
    padding: 14px 20px;
    border-bottom: 1px solid var(--border);
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 16px 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.msg {
    max-width: 70%;
    padding: 10px 14px;
    border-radius: 16px;
    font-size: 0.9rem;
    line-height: 1.4;
    word-wrap: break-word;
}

.msg-out {
    align-self: flex-end;
    background: var(--primary);
    color: white;
    border-bottom-right-radius: 4px;
}

.msg-in {
    align-self: flex-start;
    background: #f1f5f9;
    color: var(--text);
    border-bottom-left-radius: 4px;
}

.msg-time {
    font-size: 0.7rem;
    opacity: 0.7;
    margin-top: 4px;
}

.chat-input-form {
    display: flex;
    gap: 8px;
    padding: 12px 16px;
    border-top: 1px solid var(--border);
}

.chat-input-form input {
    flex: 1;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: 24px;
    font-size: 0.9rem;
    outline: none;
}

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

.chat-input-form .btn-primary {
    width: auto;
    border-radius: 24px;
    padding: 10px 20px;
}

/* PROFILE */
.profile-form {
    max-width: 500px;
    background: var(--card-bg);
    padding: 24px;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

/* SPOT EDIT MODAL */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
}

.modal {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 24px;
    width: 90%;
    max-width: 450px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
}

.modal h3 { margin-bottom: 16px; }

.modal-actions {
    display: flex;
    gap: 8px;
    margin-top: 16px;
}

.modal-actions button { flex: 1; }

/* TOAST */
.toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    background: #1e293b;
    color: white;
    padding: 12px 24px;
    border-radius: 10px;
    font-size: 0.9rem;
    z-index: 300;
    transition: opacity 0.3s;
    box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}

.toast.error { background: var(--danger); }

/* Upload */
.upload-btn {
    display: inline-block;
    padding: 6px 12px;
    background: #f1f5f9;
    border: 1px dashed var(--border);
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.8rem;
    color: var(--text-light);
    transition: all 0.2s;
}

.upload-btn:hover { border-color: var(--primary); color: var(--primary); }
.upload-btn input[type=file] { display: none; }

.doc-uploaded { color: var(--success); font-size: 0.8rem; }

/* Filters */
.filters-bar {
    display: flex;
    gap: 12px;
    align-items: flex-end;
    flex-wrap: wrap;
    background: var(--card-bg);
    padding: 16px 20px;
    border-radius: 12px;
    margin-bottom: 16px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.filters-bar .form-group { flex: 1; min-width: 140px; margin-bottom: 0; }
.filters-bar .btn-sm { height: 42px; width: auto; white-space: nowrap; }

/* Schedule */
.schedule-row {
    display: flex;
    gap: 8px;
    align-items: center;
    margin-bottom: 8px;
    flex-wrap: wrap;
}

.schedule-row select,
.schedule-row input[type="time"] {
    padding: 8px 10px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 0.9rem;
}

.schedule-row select { flex: 2; min-width: 120px; }
.schedule-row input[type="time"] { flex: 1; min-width: 90px; }

.schedule-preview {
    font-size: 0.8rem;
    color: var(--primary);
    margin-top: 4px;
}

.info-text-sm {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-bottom: 12px;
}

.modal-wide { max-width: 600px; }

.schedule-quick-btns {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin: 12px 0;
}

/* Responsive */
@media (max-width: 768px) {
    .header-content { flex-direction: column; align-items: flex-start; }
    #header-nav { width: 100%; justify-content: flex-start; }
    .chat-layout { flex-direction: column; height: auto; }
    .chat-sidebar { width: 100%; max-height: 200px; }
    .chat-messages { min-height: 300px; }
    .spots-table { font-size: 0.8rem; }
    .spots-table th, .spots-table td { padding: 8px 6px; }
    .form-row { flex-direction: column; }
    .msg { max-width: 85%; }
}