/* Estilos del dashboard de analytics Ferrobamba */
/* Identidad gráfica: ferrobamba.com — dark corporativo minero */

:root {
    /* Fondos */
    --color-bg-primary:     #1a1a1a;
    --color-bg-secondary:   #222222;
    --color-bg-header:      #000000;
    --color-bg-input:       #111111;

    /* Texto */
    --color-text-primary:   #FFFFFF;
    --color-text-secondary: #CCCCCC;
    --color-text-muted:     #999999;

    /* Acentos */
    --color-accent:         #CC3333;
    --color-accent-hover:   #E04040;
    --color-accent-gold:    #C4943A;

    /* Bordes */
    --color-border:         #333333;
    --color-border-input:   #444444;

    /* Semánticos */
    --color-success:        #22c55e;
    --color-error:          #ef4444;

    /* Tipografía */
    --font-body:            'Roboto', Arial, 'Helvetica Neue', sans-serif;
    --font-heading:         'Montserrat', Arial, 'Helvetica Neue', sans-serif;
}

/* ========== Base ========== */
body {
    font-family: var(--font-body);
    background: var(--color-bg-primary);
    color: var(--color-text-secondary);
    margin: 0;
    padding: 0;
    min-height: 100vh;
}

h1, h2, h3, .kpi-label, .section-title {
    font-family: var(--font-heading);
}

.hidden { display: none !important; }

/* ========== Login ========== */
.login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 1rem;
}

.login-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 1rem;
    padding: 2.5rem;
    width: 100%;
    max-width: 400px;
    text-align: center;
}

.login-card h1 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 0 0.5rem;
    color: var(--color-text-primary);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.login-card .subtitle {
    color: var(--color-text-muted);
    margin: 0 0 2rem;
    font-size: 0.9rem;
}

.login-card input[type="password"] {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--color-border-input);
    border-radius: 0.5rem;
    background: var(--color-bg-input);
    color: var(--color-text-secondary);
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s;
    box-sizing: border-box;
}

.login-card input[type="password"]:focus {
    border-color: var(--color-accent);
}

.login-card button {
    width: 100%;
    padding: 0.75rem;
    margin-top: 1rem;
    border: none;
    border-radius: 0.5rem;
    background: var(--color-accent);
    color: white;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.login-card button:hover { background: var(--color-accent-hover); }
.login-card button:disabled { background: var(--color-border-input); cursor: not-allowed; }

.login-error {
    color: var(--color-error);
    font-size: 0.85rem;
    margin-top: 0.75rem;
}

/* ========== Dashboard Layout ========== */
.dashboard-header {
    background: var(--color-bg-header);
    border-bottom: 1px solid var(--color-border);
    padding: 0.75rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 50;
}

.dashboard-header h1 {
    font-size: 1.1rem;
    font-weight: 700;
    margin: 0;
    color: var(--color-text-primary);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.dashboard-header .header-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.btn-logout {
    padding: 0.4rem 0.85rem;
    border: 1px solid var(--color-border);
    border-radius: 0.375rem;
    background: transparent;
    color: var(--color-text-muted);
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s;
}

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

/* ========== Tabs ========== */
.tab-nav {
    display: flex;
    gap: 0.25rem;
    padding: 0.75rem 1.5rem 0;
    background: var(--color-bg-header);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.tab-btn {
    padding: 0.5rem 1rem;
    border: none;
    border-bottom: 2px solid transparent;
    background: transparent;
    color: var(--color-text-muted);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s;
}

.tab-btn:hover { color: var(--color-text-primary); }

.tab-btn.tab-active {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}

/* ========== Content ========== */
.tab-content {
    padding: 1.5rem;
    max-width: 1400px;
    margin: 0 auto;
}

/* ========== KPI Cards ========== */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.kpi-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 0.75rem;
    padding: 1.25rem;
}

.kpi-card .kpi-label {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin: 0 0 0.5rem;
}

.kpi-card .kpi-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin: 0;
}

.kpi-card .kpi-value.text-green { color: var(--color-success); }
.kpi-card .kpi-value.text-red { color: var(--color-error); }
.kpi-card .kpi-value.text-yellow { color: var(--color-accent-gold); }
.kpi-card .kpi-value.text-blue { color: var(--color-accent); }
.kpi-card .kpi-value.text-cyan { color: var(--color-accent-gold); }
.kpi-card .kpi-value.text-sm { font-size: 1rem; }

/* ========== Chart Containers ========== */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.chart-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 0.75rem;
    padding: 1.25rem;
}

.chart-card h3 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    margin: 0 0 1rem;
}

.chart-container {
    position: relative;
    height: 300px;
}

.chart-container-sm {
    position: relative;
    height: 250px;
}

/* ========== Tables ========== */
.section-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    margin: 1.5rem 0 0.75rem;
}

.table-controls {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    flex-wrap: wrap;
    align-items: center;
}

.table-search {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--color-border-input);
    border-radius: 0.375rem;
    background: var(--color-bg-input);
    color: var(--color-text-secondary);
    font-size: 0.85rem;
    outline: none;
    flex: 1;
    min-width: 200px;
    max-width: 350px;
}

.table-search:focus { border-color: var(--color-accent); }

.btn-export {
    padding: 0.5rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: 0.375rem;
    background: var(--color-bg-secondary);
    color: var(--color-text-secondary);
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-export:hover { background: var(--color-border); }

.table-wrapper {
    overflow-x: auto;
    border: 1px solid var(--color-border);
    border-radius: 0.5rem;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.82rem;
}

.data-table th {
    background: var(--color-bg-secondary);
    color: var(--color-text-muted);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.72rem;
    letter-spacing: 0.05em;
    padding: 0.65rem 0.75rem;
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    white-space: nowrap;
    user-select: none;
}

.data-table th.sort-asc::after { content: " \25B2"; font-size: 0.6rem; }
.data-table th.sort-desc::after { content: " \25BC"; font-size: 0.6rem; }

.data-table td {
    padding: 0.55rem 0.75rem;
    border-bottom: 1px solid #2a2a2a;
    color: var(--color-text-secondary);
    white-space: nowrap;
}

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

/* ========== Badges ========== */
.badge-alert {
    background: #3d1111;
    color: #fca5a5;
    padding: 0.15rem 0.5rem;
    border-radius: 9999px;
    font-size: 0.72rem;
    font-weight: 600;
}

.badge-ok {
    background: #0a2e1f;
    color: #6ee7b7;
    padding: 0.15rem 0.5rem;
    border-radius: 9999px;
    font-size: 0.72rem;
    font-weight: 600;
}

.tag-alert {
    display: inline-block;
    background: #3a3520;
    color: var(--color-accent-gold);
    padding: 0.1rem 0.4rem;
    border-radius: 0.25rem;
    font-size: 0.65rem;
    margin: 0.1rem;
}

/* ========== Filters ========== */
.filter-label {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--color-text-muted);
    font-size: 0.85rem;
    cursor: pointer;
}

.filter-label input[type="checkbox"] {
    accent-color: var(--color-accent);
}

/* ========== Chat / Agente ========== */
.chat-container {
    display: flex;
    flex-direction: column;
    height: calc(100vh - 140px);
    max-width: 900px;
    margin: 0 auto;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 0.75rem;
    overflow: hidden;
}

.chat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1.25rem;
    border-bottom: 1px solid var(--color-border);
    background: var(--color-bg-secondary);
    flex-shrink: 0;
}

.chat-header-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.chat-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--color-accent);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.8rem;
    flex-shrink: 0;
}

.chat-header h3 {
    margin: 0;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text-primary);
}

.chat-status {
    margin: 0;
    font-size: 0.72rem;
    color: var(--color-text-muted);
}

.btn-chat-clear {
    padding: 0.35rem 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: 0.375rem;
    background: transparent;
    color: var(--color-text-muted);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.2s;
}

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

/* Area de mensajes */
.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1rem 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.chat-messages::-webkit-scrollbar { width: 6px; }
.chat-messages::-webkit-scrollbar-track { background: transparent; }
.chat-messages::-webkit-scrollbar-thumb { background: var(--color-border-input); border-radius: 3px; }

/* Mensajes */
.chat-message {
    display: flex;
    max-width: 85%;
}

.chat-message-user { align-self: flex-end; }
.chat-message-assistant { align-self: flex-start; }

/* Burbujas */
.chat-bubble {
    padding: 0.65rem 1rem;
    border-radius: 0.75rem;
    line-height: 1.5;
    font-size: 0.85rem;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.chat-bubble-user {
    background: var(--color-accent);
    color: #ffffff;
    border-bottom-right-radius: 0.25rem;
}

.chat-bubble-assistant {
    background: var(--color-bg-primary);
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
    border-bottom-left-radius: 0.25rem;
}

.chat-text-content {
    line-height: 1.6;
}

.chat-text-content strong {
    color: var(--color-text-primary);
}

.chat-text-content a.chat-download-link {
    color: var(--color-accent-gold);
    text-decoration: underline;
    word-break: break-all;
}

.chat-text-content a.chat-download-link:hover {
    color: #d4a94e;
}

/* Indicador de herramientas */
.chat-tool-indicator {
    align-self: flex-start;
    font-size: 0.68rem;
    color: var(--color-text-muted);
    padding: 0.15rem 0.5rem;
    font-style: italic;
}

/* Indicador de escritura */
.chat-typing {
    display: flex;
    gap: 0.3rem;
    padding: 0.25rem 0;
}

.typing-dot {
    width: 7px;
    height: 7px;
    background: var(--color-text-muted);
    border-radius: 50%;
    animation: typingBounce 1.4s infinite;
}

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

@keyframes typingBounce {
    0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
    30% { transform: translateY(-5px); opacity: 1; }
}

/* Sugerencias rápidas */
.chat-suggestions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    border-top: 1px solid var(--color-border);
    background: var(--color-bg-secondary);
    flex-shrink: 0;
    transition: max-height 0.3s ease, padding 0.3s ease, opacity 0.3s ease;
    max-height: 120px;
    overflow: hidden;
}

.chat-suggestions-hidden {
    max-height: 0;
    padding-top: 0;
    padding-bottom: 0;
    opacity: 0;
    border-top: none;
}

.chat-suggestion-pill {
    padding: 0.35rem 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: 9999px;
    background: transparent;
    color: var(--color-text-muted);
    font-size: 0.72rem;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.chat-suggestion-pill:hover {
    background: var(--color-border);
    color: var(--color-text-primary);
    border-color: var(--color-accent);
}

/* Barra de entrada */
.chat-input-bar {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    border-top: 1px solid var(--color-border);
    background: var(--color-bg-secondary);
    flex-shrink: 0;
}

.chat-input {
    flex: 1;
    padding: 0.6rem 0.85rem;
    border: 1px solid var(--color-border-input);
    border-radius: 0.5rem;
    background: var(--color-bg-input);
    color: var(--color-text-secondary);
    font-size: 0.85rem;
    font-family: var(--font-body);
    outline: none;
    transition: border-color 0.2s;
}

.chat-input:focus { border-color: var(--color-accent); }
.chat-input::placeholder { color: var(--color-text-muted); }

.chat-send-btn {
    width: 38px;
    height: 38px;
    border: none;
    border-radius: 0.5rem;
    background: var(--color-accent);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: background 0.2s;
}

.chat-send-btn:hover { background: var(--color-accent-hover); }

/* ========== Modal Visor PDF ========== */
.pdf-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
}

.pdf-modal.hidden {
    display: none !important;
}

.pdf-modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.75);
}

.pdf-modal-content {
    position: relative;
    width: 90%;
    max-width: 1000px;
    height: 85vh;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 0.75rem;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    z-index: 101;
}

.pdf-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1.25rem;
    border-bottom: 1px solid var(--color-border);
    background: var(--color-bg-header);
    flex-shrink: 0;
}

.pdf-modal-header h3 {
    margin: 0;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: calc(100% - 50px);
}

.pdf-modal-close-btn {
    width: 32px;
    height: 32px;
    border: 1px solid var(--color-border);
    border-radius: 0.375rem;
    background: transparent;
    color: var(--color-text-muted);
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    flex-shrink: 0;
}

.pdf-modal-close-btn:hover {
    background: var(--color-border);
    color: var(--color-text-primary);
}

.pdf-modal-body {
    flex: 1;
    position: relative;
    overflow: hidden;
}

.pdf-modal-iframe {
    width: 100%;
    height: 100%;
    border: none;
    background: #ffffff;
}

.pdf-modal-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.pdf-spinner {
    width: 36px;
    height: 36px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    animation: pdfSpin 0.8s linear infinite;
    margin-bottom: 1rem;
}

@keyframes pdfSpin {
    to { transform: rotate(360deg); }
}

.pdf-modal-error {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--color-error);
    font-size: 0.9rem;
    padding: 2rem;
    text-align: center;
}

.pdf-link {
    color: var(--color-accent-gold);
    cursor: pointer;
    text-decoration: underline;
    transition: color 0.2s;
}

.pdf-link:hover {
    color: #d4a94e;
}

/* ========== Responsive ========== */
@media (max-width: 768px) {
    .kpi-grid { grid-template-columns: repeat(2, 1fr); }
    .charts-grid { grid-template-columns: 1fr; }
    .tab-content { padding: 1rem; }
    .dashboard-header { padding: 0.75rem 1rem; }
    .tab-nav { padding: 0.5rem 1rem 0; }
    .kpi-card .kpi-value { font-size: 1.2rem; }
    .chat-container { height: calc(100vh - 120px); }
    .chat-message { max-width: 92%; }
    .chat-suggestion-pill { font-size: 0.68rem; }
    .pdf-modal-content { width: 95%; height: 90vh; }
}

@media (max-width: 480px) {
    .kpi-grid { grid-template-columns: 1fr; }
    .login-card { padding: 1.5rem; }
    .chat-container { height: calc(100vh - 100px); }
    .chat-suggestions { gap: 0.35rem; }
}