:root {
    --bg: #080E1A;
    --bg2: #0D1526;
    --bg3: #111D33;
    --border: #1E2D4A;
    --accent: #00D4FF;
    --accent2: #00FF9D;
    --warn: #FFB800;
    --err: #FF4757;
    --text: #C8D8F0;
    --text2: #6B89B0;
}

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

body {
    font-family: 'Space Grotesk', sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
}

.hidden { display: none !important; }

/* PIN Screen */
.pin-screen, .login-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.pin-container, .login-container {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 40px;
    text-align: center;
    max-width: 400px;
    width: 90%;
}

.pin-container h2, .login-container h2 {
    color: var(--accent);
    margin-bottom: 10px;
}

.pin-container p, .login-container p {
    color: var(--text2);
    margin-bottom: 30px;
}

.pin-inputs {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin-bottom: 20px;
}

.pin-digit {
    width: 50px;
    height: 60px;
    background: var(--bg3);
    border: 2px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-size: 24px;
    text-align: center;
    font-family: 'IBM Plex Mono', monospace;
}

.pin-digit:focus {
    outline: none;
    border-color: var(--accent);
}

.error-text {
    color: var(--err);
    font-size: 14px;
    min-height: 20px;
}

.login-container input {
    width: 100%;
    padding: 12px;
    margin-bottom: 15px;
    background: var(--bg3);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font-family: 'Space Grotesk', sans-serif;
}

.login-container button {
    width: 100%;
    padding: 12px;
    background: var(--accent);
    color: var(--bg);
    border: none;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    font-family: 'Space Grotesk', sans-serif;
}

.back-link {
    display: block;
    margin-top: 20px;
    color: var(--text2);
    text-decoration: none;
}

/* Main App */
.app {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

.header {
    background: var(--bg2);
    border-bottom: 1px solid var(--border);
    padding: 15px 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo {
    font-size: 24px;
}

.negocio-name {
    font-weight: 600;
    font-size: 18px;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.admin-link {
    color: var(--text2);
    text-decoration: none;
    font-size: 14px;
}

.admin-link:hover {
    color: var(--accent);
}

.main-container {
    flex: 1;
    display: flex;
    overflow: hidden;
}

.chat-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 20px;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 15px;
    padding-bottom: 20px;
}

.message {
    max-width: 80%;
    padding: 15px;
    border-radius: 12px;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.bot-message {
    background: var(--bg2);
    border: 1px solid var(--border);
    align-self: flex-start;
}

.user-message {
    background: var(--accent);
    color: var(--bg);
    align-self: flex-end;
}

.message-content {
    line-height: 1.5;
}

.message-time {
    font-size: 11px;
    color: var(--text2);
    margin-top: 5px;
    font-family: 'IBM Plex Mono', monospace;
}

.user-message .message-time {
    color: rgba(8, 14, 26, 0.7);
}

.typing-indicator {
    display: flex;
    gap: 5px;
    padding: 15px;
    align-self: flex-start;
}

.typing-indicator span {
    width: 8px;
    height: 8px;
    background: var(--text2);
    border-radius: 50%;
    animation: typing 1.4s infinite;
}

.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing {
    0%, 60%, 100% { transform: translateY(0); }
    30% { transform: translateY(-10px); }
}

.chat-input-container {
    display: flex;
    gap: 10px;
    padding-top: 15px;
    border-top: 1px solid var(--border);
}

#chat-input {
    flex: 1;
    padding: 15px 20px;
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 25px;
    color: var(--text);
    font-family: 'Space Grotesk', sans-serif;
    font-size: 15px;
}

#chat-input:focus {
    outline: none;
    border-color: var(--accent);
}

#send-btn {
    width: 50px;
    height: 50px;
    background: var(--accent);
    color: var(--bg);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

#send-btn:hover {
    background: var(--accent2);
}

/* Sidebar */
.sidebar {
    width: 280px;
    background: var(--bg2);
    border-left: 1px solid var(--border);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    overflow-y: auto;
}

.stats-card, .alertas-card, .quick-actions {
    background: var(--bg3);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 15px;
}

.stats-card h3, .alertas-card h3, .quick-actions h3 {
    font-size: 14px;
    color: var(--text2);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.stat-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid var(--border);
}

.stat-row:last-child {
    border-bottom: none;
}

.alertas-card .alerta-item {
    padding: 8px;
    background: rgba(255, 71, 87, 0.1);
    border-left: 3px solid var(--err);
    margin-bottom: 8px;
    border-radius: 0 4px 4px 0;
}

.no-alertas {
    color: var(--text2);
    font-size: 13px;
}

.action-btn {
    width: 100%;
    padding: 10px;
    background: var(--bg);
    border: 1px solid var(--border);
    color: var(--text);
    border-radius: 6px;
    cursor: pointer;
    font-family: 'Space Grotesk', sans-serif;
}

.action-btn:hover {
    background: var(--accent);
    color: var(--bg);
}

/* Admin Styles */
.admin-body {
    background: var(--bg);
}

.admin-app {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.admin-header {
    background: var(--bg2);
    border-bottom: 1px solid var(--border);
    padding: 15px 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logout-btn {
    padding: 8px 16px;
    background: var(--err);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
}

.admin-nav {
    background: var(--bg2);
    border-bottom: 1px solid var(--border);
    display: flex;
    gap: 5px;
    padding: 0 25px;
}

.nav-btn {
    padding: 15px 25px;
    background: transparent;
    border: none;
    color: var(--text2);
    cursor: pointer;
    font-family: 'Space Grotesk', sans-serif;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
}

.nav-btn:hover, .nav-btn.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

.admin-main {
    flex: 1;
    padding: 25px;
    overflow-y: auto;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 20px;
}

.stat-card h4 {
    color: var(--text2);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 10px;
}

.stat-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--accent);
    font-family: 'IBM Plex Mono', monospace;
}

/* Tables */
.data-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
}

.data-table th, .data-table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.data-table th {
    background: var(--bg3);
    color: var(--text2);
    font-weight: 500;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.data-table tr:hover {
    background: var(--bg3);
}

/* Section Headers */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 15px;
}

.filters {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}

.filters input, .filters select {
    padding: 8px 12px;
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font-family: 'Space Grotesk', sans-serif;
}

.filters button {
    padding: 8px 16px;
    background: var(--accent);
    color: var(--bg);
    border: none;
    border-radius: 6px;
    cursor: pointer;
}

/* Import Section */
.import-section {
    max-width: 600px;
}

.import-info {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
}

.import-info code {
    display: block;
    margin-top: 10px;
    padding: 10px;
    background: var(--bg3);
    border-radius: 4px;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 13px;
}

.import-form {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

#import-file {
    padding: 10px;
    background: var(--bg3);
    border: 1px dashed var(--border);
    border-radius: 6px;
    color: var(--text);
}

#import-btn {
    padding: 12px;
    background: var(--accent2);
    color: var(--bg);
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
}

/* Responsive */
@media (max-width: 900px) {
    .sidebar {
        display: none;
    }
    
    .message {
        max-width: 90%;
    }
}

@media (max-width: 600px) {
    .admin-nav {
        flex-wrap: wrap;
        padding: 10px;
    }
    
    .nav-btn {
        padding: 10px 15px;
        font-size: 13px;
    }
    
    .section-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .data-table {
        font-size: 13px;
    }
    
    .data-table th, .data-table td {
        padding: 8px 10px;
    }
}