/**
 * Estimador de Costos de Construcción
 * Application stylesheet built on Graf Design System tokens
 *
 * Requires: graf-design-system.min.css loaded first
 * Fonts: Playfair Display (headings), Varela Round (body) — loaded by graf_page_start()
 */

/* ===========================
   BASE / RESET
   =========================== */

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

body {
    font-family: var(--graf-font-family);
    line-height: var(--graf-line-height-normal);
    color: var(--graf-body-color);
    background-color: var(--graf-body-bg);
    min-height: 100vh;
}

/* ===========================
   LAYOUT
   =========================== */

.estimador-container {
    max-width: var(--graf-container-xl);
    margin: 0 auto;
    padding: var(--graf-spacing-lg);
}

.estimacion-container {
    max-width: var(--graf-container-lg);
    margin: 0 auto;
    padding: var(--graf-spacing-lg);
}

/* ===========================
   HEADINGS (Playfair Display)
   =========================== */

h1, h2 {
    font-family: var(--graf-font-family-display);
    font-weight: var(--graf-font-weight-bold);
}

h1 {
    font-size: var(--graf-font-size-4xl);
    color: var(--graf-primary);
    margin-bottom: var(--graf-spacing-sm);
    line-height: var(--graf-line-height-tight);
}

h2 {
    font-size: var(--graf-font-size-2xl);
    color: var(--graf-primary);
    margin-bottom: var(--graf-spacing-md);
}

h3 {
    font-size: var(--graf-font-size-xl);
    font-weight: var(--graf-font-weight-semibold);
    color: var(--graf-primary);
    margin-bottom: var(--graf-spacing-md);
}

h4 {
    font-size: var(--graf-font-size-lg);
    font-weight: var(--graf-font-weight-semibold);
    color: var(--graf-primary);
    margin-bottom: var(--graf-spacing-sm);
}

/* ===========================
   TOOLTIP OVERRIDES (match HBU styling)
   =========================== */

.tooltip-inner {
    background-color: var(--graf-warm-900);
    color: var(--graf-white);
    border-radius: var(--graf-border-radius-sm);
    padding: var(--graf-spacing-xs) var(--graf-spacing-sm);
}

.tooltip .tooltip-arrow::before {
    border-top-color: var(--graf-warm-900);
}

/* ===========================
   LEAD TEXT
   =========================== */

.lead {
    font-size: var(--graf-font-size-lg);
    color: var(--graf-text-secondary);
    margin-bottom: var(--graf-spacing-xl);
}

/* ===========================
   WIZARD STEPPER
   =========================== */

.graf-wizard {
    background: var(--graf-white);
    border-radius: var(--graf-border-radius-xl);
    box-shadow: var(--graf-shadow-lg);
    overflow: hidden;
}

.graf-wizard-steps {
    display: flex;
    background: var(--graf-warm-100);
    padding: 0;
    list-style: none;
}

.graf-wizard-step {
    flex: 1;
    padding: var(--graf-spacing-md);
    text-align: center;
    position: relative;
    cursor: pointer;
    transition: var(--graf-transition-colors);
    font-weight: var(--graf-font-weight-medium);
    color: var(--graf-warm-600);
    font-size: var(--graf-font-size-sm);
}

.graf-wizard-step:not(:last-child)::after {
    content: '';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 1px;
    height: 60%;
    background: var(--graf-warm-300);
}

.graf-wizard-step .step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: var(--graf-border-radius-full);
    background: var(--graf-warm-300);
    color: var(--graf-warm-700);
    font-weight: var(--graf-font-weight-bold);
    font-size: var(--graf-font-size-sm);
    margin-bottom: var(--graf-spacing-xs);
}

.graf-wizard-step-active {
    background: var(--graf-primary);
    color: var(--graf-white);
}

.graf-wizard-step-active .step-number {
    background: rgba(255, 255, 255, 0.3);
    color: var(--graf-white);
}

.graf-wizard-step-completed {
    background: var(--graf-success);
    color: var(--graf-white);
}

.graf-wizard-step-completed .step-number {
    background: rgba(255, 255, 255, 0.3);
    color: var(--graf-white);
}

/* ===========================
   WIZARD CONTENT AREA
   =========================== */

.wizard-content {
    padding: var(--graf-spacing-2xl);
}

.step {
    display: none;
}

.step.active {
    display: block;
}

/* ===========================
   FORMS
   =========================== */

.graf-form-group {
    margin-bottom: var(--graf-spacing-lg);
}

.graf-form-label {
    display: block;
    margin-bottom: var(--graf-spacing-xs);
    font-weight: var(--graf-font-weight-medium);
    color: var(--graf-warm-700);
    font-size: var(--graf-font-size-sm);
}

.graf-required {
    color: var(--graf-danger);
    margin-left: 2px;
}

.graf-form-control {
    width: 100%;
    padding: var(--graf-spacing-sm) var(--graf-spacing-md);
    border: var(--graf-border-width) solid var(--graf-border-color);
    border-radius: var(--graf-border-radius);
    font-size: var(--graf-font-size-base);
    font-family: var(--graf-font-family);
    transition: var(--graf-transition-colors);
    background: var(--graf-white);
    color: var(--graf-body-color);
}

.graf-form-control:focus {
    outline: none;
    border-color: var(--graf-primary);
    box-shadow: 0 0 0 var(--graf-focus-ring-width) var(--graf-focus-ring-color);
}

.graf-form-control.is-invalid {
    border-color: var(--graf-danger);
}

.graf-form-control.is-invalid:focus {
    box-shadow: 0 0 0 var(--graf-focus-ring-width) rgba(220, 53, 69, 0.25);
}

.graf-form-control.is-valid {
    border-color: var(--graf-success);
}

.graf-form-hint {
    display: block;
    margin-top: var(--graf-spacing-xs);
    font-size: var(--graf-font-size-xs);
    color: var(--graf-text-secondary);
}

.graf-invalid-feedback {
    display: block;
    margin-top: var(--graf-spacing-xs);
    font-size: var(--graf-font-size-xs);
    color: var(--graf-danger);
}

/* Input groups (value + unit addon) */
.input-group {
    display: flex;
    align-items: center;
}

.input-group .graf-form-control {
    border-radius: var(--graf-border-radius) 0 0 var(--graf-border-radius);
}

.input-addon {
    background: var(--graf-warm-100);
    border: var(--graf-border-width) solid var(--graf-border-color);
    border-left: 0;
    padding: var(--graf-spacing-sm) var(--graf-spacing-md);
    border-radius: 0 var(--graf-border-radius) var(--graf-border-radius) 0;
    font-weight: var(--graf-font-weight-medium);
    color: var(--graf-warm-600);
    font-size: var(--graf-font-size-sm);
    white-space: nowrap;
}

/* ===========================
   GRID LAYOUT (graf-row / graf-col)
   =========================== */

.graf-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--graf-spacing-lg);
}

.graf-row.three-cols {
    grid-template-columns: 1fr 1fr 1fr;
}

.graf-row.full {
    grid-template-columns: 1fr;
}

.graf-col-12 {
    grid-column: 1 / -1;
}

/* ===========================
   CARDS
   =========================== */

.graf-card {
    background: var(--graf-white);
    border-radius: var(--graf-border-radius-lg);
    box-shadow: var(--graf-shadow-sm);
    overflow: hidden;
}

.graf-card-header {
    padding: var(--graf-spacing-md) var(--graf-spacing-lg);
    background: var(--graf-warm-50);
    border-bottom: 1px solid var(--graf-border-color);
    font-weight: var(--graf-font-weight-semibold);
    color: var(--graf-primary);
}

.graf-card-body {
    padding: var(--graf-spacing-lg);
}

/* ===========================
   BUTTONS
   =========================== */

.graf-btn {
    padding: var(--graf-spacing-sm) var(--graf-spacing-lg);
    border: none;
    border-radius: var(--graf-border-radius);
    font-size: var(--graf-font-size-base);
    font-weight: var(--graf-font-weight-medium);
    font-family: var(--graf-font-family);
    cursor: pointer;
    transition: var(--graf-transition-interactive);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: var(--graf-spacing-xs);
    line-height: var(--graf-line-height-normal);
}

.graf-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

.graf-btn-primary {
    background: var(--graf-primary);
    color: var(--graf-white);
}

.graf-btn-primary:hover:not(:disabled) {
    background: var(--graf-primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--graf-shadow-md);
}

.graf-btn-secondary {
    background: var(--graf-warm-300);
    color: var(--graf-warm-700);
}

.graf-btn-secondary:hover:not(:disabled) {
    background: var(--graf-warm-400);
}

.graf-btn-outline {
    background: transparent;
    border: var(--graf-border-width) solid var(--graf-primary);
    color: var(--graf-primary);
}

.graf-btn-outline:hover:not(:disabled) {
    background: var(--graf-primary);
    color: var(--graf-white);
}

.graf-btn-outline.active {
    background: var(--graf-primary);
    color: var(--graf-white);
}

.graf-btn-loading {
    position: relative;
    pointer-events: none;
}

.graf-btn-loading::after {
    content: '';
    display: inline-block;
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--graf-border-radius-full);
    border-top-color: var(--graf-white);
    animation: graf-spin 0.8s ease-in-out infinite;
    margin-left: var(--graf-spacing-xs);
}

@keyframes graf-spin {
    to { transform: rotate(360deg); }
}

/* ===========================
   ALERTS
   =========================== */

.graf-alert {
    padding: var(--graf-spacing-md) var(--graf-spacing-lg);
    border-radius: var(--graf-border-radius);
    margin-bottom: var(--graf-spacing-lg);
    border-left: var(--graf-border-width-thick) solid;
    font-size: var(--graf-font-size-sm);
}

.graf-alert-warning {
    background: var(--graf-warning-bg, #fffbeb);
    color: var(--graf-warning-dark);
    border-color: var(--graf-warning);
}

.graf-alert-danger {
    background: var(--graf-danger-bg, #fef2f2);
    color: var(--graf-danger-dark);
    border-color: var(--graf-danger);
}

.graf-alert-success {
    background: var(--graf-success-bg, #f0fdf4);
    color: var(--graf-success-dark);
    border-color: var(--graf-success);
}

.graf-alert-info {
    background: var(--graf-info-bg, #eff6ff);
    color: var(--graf-info);
    border-color: var(--graf-info, var(--graf-teal-500));
}

/* ===========================
   BADGES
   =========================== */

.graf-badge {
    display: inline-flex;
    align-items: center;
    padding: 2px var(--graf-spacing-sm);
    border-radius: var(--graf-border-radius-full);
    font-size: var(--graf-font-size-xs);
    font-weight: var(--graf-font-weight-semibold);
    line-height: var(--graf-line-height-normal);
}

.graf-badge-primary {
    background: var(--graf-teal-100);
    color: var(--graf-teal-800);
}

.graf-badge-success {
    background: var(--graf-success-bg, #dcfce7);
    color: var(--graf-success-dark);
}

.graf-badge-warning {
    background: var(--graf-warning-bg, #fef9c3);
    color: var(--graf-warning-dark);
}

.graf-badge-danger {
    background: var(--graf-danger-bg, #fef2f2);
    color: var(--graf-danger-dark);
}

/* ===========================
   TABLES
   =========================== */

.graf-table {
    width: 100%;
    border-collapse: collapse;
}

.graf-table th,
.graf-table td {
    padding: var(--graf-spacing-sm) var(--graf-spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--graf-border-color);
}

.graf-table th {
    background: var(--graf-warm-100);
    font-weight: var(--graf-font-weight-semibold);
    color: var(--graf-warm-700);
    font-size: var(--graf-font-size-sm);
}

.graf-table .amount {
    text-align: right;
    font-weight: var(--graf-font-weight-semibold);
}

/* ===========================
   WIZARD NAVIGATION BAR
   =========================== */

.wizard-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--graf-spacing-lg) var(--graf-spacing-2xl);
    background: var(--graf-warm-50);
    border-top: 1px solid var(--graf-border-color);
}

/* ===========================
   COST DISPLAY (Results Hero)
   =========================== */

.cost-display {
    text-align: center;
    padding: var(--graf-spacing-2xl);
    background: linear-gradient(135deg, var(--graf-teal-600), var(--graf-teal-500));
    color: var(--graf-white);
}

.cost-display .main-cost {
    font-family: var(--graf-font-family-display);
    font-size: 3rem;
    font-weight: var(--graf-font-weight-bold);
    margin-bottom: var(--graf-spacing-sm);
}

.cost-display .secondary-cost {
    font-size: var(--graf-font-size-2xl);
    opacity: 0.9;
    margin-bottom: var(--graf-spacing-sm);
}

.cost-display .area-info {
    font-size: var(--graf-font-size-lg);
    opacity: 0.8;
}

.cost-display .cost-per-m2 {
    font-size: var(--graf-font-size-xl);
    font-weight: var(--graf-font-weight-semibold);
    margin-top: var(--graf-spacing-sm);
    padding-top: var(--graf-spacing-sm);
    border-top: 1px solid rgba(255, 255, 255, 0.3);
}

/* ===========================
   SUMMARY SECTIONS
   =========================== */

.summary-section {
    background: var(--graf-warm-50);
    padding: var(--graf-spacing-lg);
    border-radius: var(--graf-border-radius-lg);
    margin-bottom: var(--graf-spacing-lg);
}

.summary-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--graf-spacing-md);
}

.summary-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--graf-spacing-sm) var(--graf-spacing-md);
    background: var(--graf-warm-50);
    border-radius: var(--graf-border-radius);
    border-left: var(--graf-border-width-thick) solid var(--graf-primary);
}

.summary-item .label {
    font-weight: var(--graf-font-weight-medium);
    color: var(--graf-warm-700);
    font-size: var(--graf-font-size-sm);
}

.summary-item .value {
    font-weight: var(--graf-font-weight-semibold);
    color: var(--graf-warm-900);
}

/* ===========================
   LINE ITEMS TABLE
   =========================== */

.line-items-section {
    margin-top: var(--graf-spacing-xl);
}

.add-item-btn {
    background: var(--graf-success);
    color: var(--graf-white);
    border: none;
    padding: var(--graf-spacing-xs) var(--graf-spacing-md);
    border-radius: var(--graf-border-radius);
    cursor: pointer;
    font-size: var(--graf-font-size-sm);
    font-family: var(--graf-font-family);
    margin-top: var(--graf-spacing-sm);
    transition: var(--graf-transition-colors);
}

.add-item-btn:hover {
    background: var(--graf-success-hover, #16a34a);
}

.remove-item-btn {
    background: var(--graf-danger);
    color: var(--graf-white);
    border: none;
    padding: var(--graf-spacing-xs) var(--graf-spacing-sm);
    border-radius: var(--graf-border-radius-sm);
    cursor: pointer;
    font-size: var(--graf-font-size-xs);
    font-family: var(--graf-font-family);
    transition: var(--graf-transition-colors);
}

.remove-item-btn:hover {
    background: var(--graf-danger-hover, #dc2626);
}

/* Social sharing now handled by graf-share-suite.js */

/* ===========================
   ACTIONS BAR
   =========================== */

.actions {
    display: flex;
    gap: var(--graf-spacing-md);
    flex-wrap: wrap;
    justify-content: center;
    padding: var(--graf-spacing-xl);
    background: var(--graf-warm-50);
    border-top: 1px solid var(--graf-border-color);
}

/* ===========================
   LOADING / SKELETON
   =========================== */

.loading {
    text-align: center;
    padding: var(--graf-spacing-2xl);
}

.loading-spinner {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 4px solid var(--graf-warm-200);
    border-radius: var(--graf-border-radius-full);
    border-top-color: var(--graf-primary);
    animation: graf-spin 0.8s ease-in-out infinite;
}

.graf-skeleton-card {
    background: var(--graf-warm-100);
    border-radius: var(--graf-border-radius-lg);
    padding: var(--graf-spacing-lg);
    animation: graf-skeleton-pulse 1.5s ease-in-out infinite;
}

.graf-skeleton-card .skeleton-line {
    height: 16px;
    background: var(--graf-warm-200);
    border-radius: var(--graf-border-radius-sm);
    margin-bottom: var(--graf-spacing-sm);
}

.graf-skeleton-card .skeleton-line:last-child {
    width: 60%;
}

@keyframes graf-skeleton-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* ===========================
   CURRENCY TOGGLE
   =========================== */

.currency-toggle {
    display: inline-flex;
    border-radius: var(--graf-border-radius);
    overflow: hidden;
    border: var(--graf-border-width) solid var(--graf-primary);
}

.currency-toggle .graf-btn-outline {
    border: none;
    border-radius: 0;
    padding: var(--graf-spacing-xs) var(--graf-spacing-md);
    font-size: var(--graf-font-size-sm);
}

/* ===========================
   CHARTS CONTAINER
   =========================== */

.charts-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--graf-spacing-lg);
    margin-top: var(--graf-spacing-lg);
}

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

.chart-container.chart-wide {
    height: 350px;
}

#chart-waterfall-card,
#chart-tornado-card,
#chart-gantt-card {
    margin-top: var(--graf-spacing-lg);
}

.gantt-bar-row {
    display: flex;
    align-items: center;
    margin-bottom: var(--graf-spacing-sm);
}

.gantt-label {
    width: 120px;
    font-size: var(--graf-font-size-sm);
    font-weight: var(--graf-font-weight-medium);
    color: var(--graf-warm-700);
    flex-shrink: 0;
}

.gantt-track {
    flex: 1;
    height: 28px;
    background: var(--graf-warm-100);
    border-radius: var(--graf-border-radius-sm);
    position: relative;
    overflow: hidden;
}

.gantt-fill {
    height: 100%;
    border-radius: var(--graf-border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--graf-white);
    font-size: var(--graf-font-size-xs);
    font-weight: var(--graf-font-weight-semibold);
    position: absolute;
    top: 0;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ===========================
   ERROR PAGE (404)
   =========================== */

.error-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 60vh;
}

.error-page .graf-card {
    max-width: 500px;
    text-align: center;
}

.error-page .error-icon {
    font-size: 4rem;
    color: var(--graf-warm-400);
    margin-bottom: var(--graf-spacing-md);
}

/* ===========================
   FOOTER / ESTIMACION VIEW
   =========================== */

.estimacion-footer {
    text-align: center;
    margin-top: var(--graf-spacing-xl);
    padding: var(--graf-spacing-lg);
    color: var(--graf-text-secondary);
    font-size: var(--graf-font-size-sm);
}

/* ===========================
   SPACING UTILITIES
   =========================== */

.mt-lg  { margin-top: var(--graf-spacing-lg); }
.mt-md  { margin-top: var(--graf-spacing-md); }
.mt-sm  { margin-top: var(--graf-spacing-sm); }
.mb-lg  { margin-bottom: var(--graf-spacing-lg); }

/* Privacy consent card */
.privacy-consent-body {
    display: flex;
    align-items: flex-start;
    gap: var(--graf-spacing-sm);
}

.privacy-consent-body input[type="checkbox"] {
    margin-top: 4px;
}

.privacy-consent-body label {
    font-size: var(--graf-font-size-sm);
    line-height: 1.5;
    cursor: pointer;
}

/* Actions card body (Step 4) */
.actions-card-body {
    display: flex;
    gap: var(--graf-spacing-md);
    flex-wrap: wrap;
}

/* Line item controls row */
.line-item-controls {
    display: flex;
    gap: var(--graf-spacing-sm);
    margin-top: var(--graf-spacing-sm);
    flex-wrap: wrap;
}

/* ===========================
   RESPONSIVE
   =========================== */

@media (max-width: 768px) {
    h1 {
        font-size: var(--graf-font-size-2xl);
    }

    .graf-row,
    .graf-row.three-cols {
        grid-template-columns: 1fr;
    }

    .summary-grid {
        grid-template-columns: 1fr;
    }

    .wizard-content {
        padding: var(--graf-spacing-lg);
    }

    .wizard-navigation {
        padding: var(--graf-spacing-md);
    }

    .cost-display .main-cost {
        font-size: 2rem;
    }

    .cost-display .secondary-cost {
        font-size: var(--graf-font-size-xl);
    }

    .actions {
        flex-direction: column;
        align-items: center;
    }

    .actions .graf-btn {
        width: 100%;
        justify-content: center;
    }

    .charts-row {
        grid-template-columns: 1fr;
    }

    .chart-container {
        height: 250px;
    }

    .chart-container.chart-wide {
        height: 300px;
    }

    .graf-wizard-steps {
        flex-direction: column;
    }

    .graf-wizard-step:not(:last-child)::after {
        display: none;
    }
}

@media (max-width: 480px) {
    .estimador-container,
    .estimacion-container {
        padding: var(--graf-spacing-sm);
    }

    .graf-btn {
        font-size: var(--graf-font-size-sm);
        padding: var(--graf-spacing-xs) var(--graf-spacing-md);
    }
}