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

/* Large Screens */
@media (max-width: 1600px) {
    .kpi-grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
}

/* Medium-Large Screens (1200px to 1399px) */
@media (max-width: 1400px) {
    .header-content {
        padding: var(--spacing-lg);
    }

    .kpi-grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }

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

    .forecast-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Tablets (768px to 1199px) */
@media (max-width: 1199px) {
    .app-container {
        height: auto;
        min-height: 100vh;
    }

    .sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--color-neutral-200);
        flex-direction: row;
        overflow-x: auto;
        display: flex;
        flex-wrap: wrap;
    }

    .sidebar-section {
        flex: 0 1 auto;
        min-width: 250px;
        border-bottom: none;
        border-right: 1px solid var(--color-neutral-200);
        padding: var(--spacing-md);
    }

    .main-content {
        flex-direction: column;
        overflow: visible;
    }

    .sidebar {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 0;
    }

    .sidebar-section {
        border-right: 1px solid var(--color-neutral-200);
        border-bottom: 1px solid var(--color-neutral-200);
    }

    .kpi-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: var(--spacing-md);
    }

    .timeline-deal-label,
    .timeline-corner {
        width: 140px !important;
        min-width: 140px !important;
    }

    .forecast-stats {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .header-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .header-side-left {
        display: none;
    }

    .app-title {
        font-size: var(--font-size-base);
    }

    .header-actions {
        justify-self: stretch;
        width: 100%;
    }

    .view-section {
        padding: var(--spacing-lg);
    }
}

/* Small Tablets (600px to 767px) */
@media (max-width: 767px) {
    html {
        font-size: 14px;
    }

    .kpi-section {
        padding: var(--spacing-md) var(--spacing-lg);
        top: 48px;
    }

    .kpi-section.collapsed {
        padding: var(--spacing-xs) var(--spacing-lg);
    }

    .filter-chips-section {
        padding: var(--spacing-sm) var(--spacing-lg);
    }

    .filter-chips-bar {
        flex-wrap: wrap;
    }

    .filter-chips-controls {
        margin-left: 0;
        justify-content: flex-end;
    }

    .kpi-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
    }

    .kpi-card {
        padding: var(--spacing-md);
    }

    .kpi-label {
        font-size: var(--font-size-xs);
    }

    .kpi-value {
        font-size: var(--font-size-xl);
    }

    .sidebar {
        display: none;
    }

    .main-content {
        flex-direction: column;
    }

    .sidebar.active {
        display: grid;
        position: fixed;
        top: 140px;
        left: 0;
        right: 0;
        z-index: var(--z-dropdown);
        background-color: white;
        border-bottom: 1px solid var(--color-neutral-200);
        grid-template-columns: 1fr;
        gap: 0;
    }

    .sidebar-section {
        border-right: none;
        border-bottom: 1px solid var(--color-neutral-200);
    }

    .content-area {
        overflow-y: visible;
        padding-top: 0;
    }

    .kanban-board-wrapper {
        margin: 0;
        padding: 0;
    }

    .kanban-column {
        flex: 0 0 280px;
        width: 280px;
        min-width: 280px;
        max-width: 280px;
        max-height: none;
    }

    .kanban-scroll-hint {
        display: block;
        width: 100%;
        text-align: right;
        margin-top: var(--spacing-xs);
    }

    .timeline-container {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .timeline-deal {
        flex-wrap: wrap;
        min-height: auto;
    }

    .timeline-deal-name {
        width: 100%;
        min-width: auto;
        border-right: none;
        border-bottom: 1px solid var(--color-neutral-200);
        padding-bottom: var(--spacing-sm);
        margin-bottom: var(--spacing-sm);
    }

    .timeline-deal-bars {
        width: 100%;
        min-height: 50px;
    }

    .deals-list-table {
        min-width: 700px;
    }

    .list-actions {
        flex-direction: column;
    }

    .forecast-stats {
        grid-template-columns: 1fr;
    }

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

    .modal-content {
        width: 95%;
        max-height: 90vh;
    }

    .modal-header {
        padding: var(--spacing-lg);
    }

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

    .view-section {
        padding: var(--spacing-md);
    }

    .timeline-markers {
        gap: var(--spacing-sm);
    }

    .timeline-marker {
        min-width: 60px;
        padding: 0 var(--spacing-sm);
        font-size: var(--font-size-xs);
    }
}

/* Mobile Phones (< 600px) */
@media (max-width: 599px) {
    html {
        font-size: 14px;
    }

    .app-header {
        position: sticky;
        top: 0;
    }

    .header-content {
        padding: var(--spacing-md);
        flex-direction: column;
    }

    .app-title {
        font-size: var(--font-size-xl);
    }

    .header-actions {
        width: 100%;
        gap: var(--spacing-sm);
    }

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

    .kpi-section {
        padding: var(--spacing-md);
        top: auto;
    }

    .kpi-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }

    .kpi-card {
        padding: var(--spacing-md);
        min-width: auto;
    }

    .kpi-label {
        font-size: var(--font-size-xs);
    }

    .kpi-value {
        font-size: var(--font-size-lg);
    }

    .main-content {
        flex-direction: column;
    }

    .sidebar {
        display: none;
    }

    .view-section {
        padding: var(--spacing-md);
    }

    .timeline-container {
        padding: var(--spacing-md);
        min-height: 300px;
    }

    .timeline-deal {
        flex-wrap: wrap;
    }

    .timeline-deal-name {
        width: 100%;
        font-size: var(--font-size-sm);
        padding-right: var(--spacing-md);
        border-right: none;
        border-bottom: 1px solid var(--color-neutral-200);
        padding-bottom: var(--spacing-sm);
        margin-bottom: var(--spacing-sm);
    }

    .timeline-deal-bars {
        width: 100%;
    }

    .timeline-bar-label {
        font-size: var(--font-size-xs);
    }

    .kanban-board-wrapper {
        margin: 0;
        padding: 0;
    }

    .kanban-column {
        flex: 0 0 280px;
        width: 280px;
        min-width: 280px;
        max-width: 280px;
        max-height: none;
    }

    .kanban-scroll-hint {
        display: block;
        width: 100%;
        text-align: right;
        margin-top: var(--spacing-xs);
    }

    .kanban-card {
        padding: var(--spacing-md);
    }

    .kanban-card-title {
        font-size: var(--font-size-sm);
    }

    .kanban-card-amount {
        font-size: var(--font-size-base);
    }

    .forecast-table {
        font-size: var(--font-size-xs);
    }

    .forecast-table th {
        padding: var(--spacing-sm);
    }

    .forecast-table td {
        padding: var(--spacing-sm);
    }

    .forecast-stats {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

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

    .form-section {
        padding: var(--spacing-md);
        margin-bottom: var(--spacing-md);
    }

    .form-group label {
        font-size: var(--font-size-sm);
    }

    .currency-input {
        flex-direction: column;
    }

    .currency-input span {
        width: 100%;
        text-align: left;
    }

    .currency-input input {
        width: 100%;
    }

    .form-actions {
        flex-direction: column;
    }

    .form-actions button {
        width: 100%;
    }

    .modal-content {
        width: calc(100% - var(--spacing-md));
        max-width: none;
        max-height: 95vh;
        margin: var(--spacing-md);
        border-radius: var(--radius-lg);
    }

    .modal-header {
        padding: var(--spacing-md);
    }

    .modal-header h2 {
        font-size: var(--font-size-lg);
    }

    .modal-body {
        padding: var(--spacing-md);
    }

    .modal-close {
        width: 28px;
        height: 28px;
    }

    .toolbar {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .toolbar-separator {
        display: none;
    }

    .timeline-range {
        min-width: auto;
        font-size: var(--font-size-sm);
    }

    .timeline-controls {
        flex-wrap: wrap;
        gap: var(--spacing-sm);
    }

    .timeline-controls button {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: var(--font-size-xs);
    }

    .view-toggle,
    .filter-group,
    .zoom-controls {
        flex-direction: row;
        flex-wrap: wrap;
    }

    .view-btn,
    .filter-btn,
    .zoom-btn {
        flex: 1;
        min-width: 100px;
    }

    .heatmap-grid {
        grid-template-columns: repeat(6, 1fr);
    }

    .breadcrumb {
        flex-wrap: wrap;
    }

    .stat-value {
        font-size: var(--font-size-lg);
    }

    .status-value {
        font-size: var(--font-size-lg);
    }
}

/* Extra Small Phones (< 375px) */
@media (max-width: 374px) {
    html {
        font-size: 12px;
    }

    .app-title {
        font-size: var(--font-size-lg);
    }

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

    .view-btn,
    .filter-btn,
    .zoom-btn {
        min-width: auto;
        flex: auto;
    }

    .modal-content {
        width: calc(100% - 8px);
        margin: 4px;
    }

    .timeline-markers {
        gap: var(--spacing-xs);
    }

    .timeline-marker {
        min-width: 50px;
        padding: 0 2px;
    }
}

/* Print Styles */
@media print {
    .header-actions,
    .sidebar,
    .timeline-controls,
    .view-toggle,
    .filter-group,
    .zoom-controls,
    .modal,
    .btn {
        display: none !important;
    }

    .main-content {
        flex-direction: column;
    }

    .content-area {
        overflow: visible;
    }

    .view-section.active {
        break-inside: avoid;
    }

    .forecast-table {
        page-break-inside: avoid;
    }

    .kanban-card {
        page-break-inside: avoid;
    }
}

/* Accessibility - Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
}

/* Accessibility - Dark Mode */
@media (prefers-color-scheme: dark) {
    :root {
        --color-neutral-50: #111827;
        --color-neutral-100: #1f2937;
        --color-neutral-200: #374151;
        --color-neutral-300: #4b5563;
        --color-neutral-400: #6b7280;
        --color-neutral-500: #9ca3af;
        --color-neutral-600: #d1d5db;
        --color-neutral-700: #e5e7eb;
        --color-neutral-800: #f3f4f6;
        --color-neutral-900: #f9fafb;
    }

    body {
        color: var(--color-neutral-600);
        background-color: var(--color-neutral-50);
    }

    .app-header,
    .modal-content,
    .timeline-container,
    .kanban-card,
    .form-section,
    .forecast-table,
    .kpi-card,
    .stat-card,
    .kanban-board,
    .sidebar {
        background-color: var(--color-neutral-100);
        color: var(--color-neutral-700);
    }

    input,
    select,
    textarea {
        background-color: var(--color-neutral-100);
        color: var(--color-neutral-700);
        border-color: var(--color-neutral-300);
    }

    .btn-secondary {
        background-color: var(--color-neutral-300);
        color: var(--color-neutral-100);
    }

    .timeline-tooltip {
        background-color: var(--color-neutral-800);
        color: var(--color-neutral-100);
    }
}