/**
 * ============================================================================
 * DRAWER - DESIGN SYSTEM SIDASP
 * ============================================================================
 *
 * Componente de painel lateral deslizante reutilizável.
 * Usado para painéis de edição, notificações, detalhes, etc.
 *
 * Baseado no Figma UI Kit - Drawer Component
 * @see /home/kennedy/.claude/plans/staged-coalescing-lobster.md
 *
 * @version 1.0.0
 * @author SIDASP Design System
 */

/* ============================================================================
   CSS CUSTOM PROPERTIES
   ============================================================================ */

.drawer {
    --drawer-width: 520px;
    --drawer-bg: var(--color-bg-primary, #FFFFFF);
    --drawer-border-color: var(--color-border-light, #ECEDF2);
    --drawer-shadow: -4px 0 24px rgba(18, 21, 31, 0.15);
    --drawer-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --drawer-header-padding: var(--spacing-xl, 24px);
    --drawer-body-padding: var(--spacing-xl, 24px);
    --drawer-footer-padding: var(--spacing-lg, 16px) var(--spacing-xl, 24px);
    --drawer-footer-bg: var(--color-bg-secondary, #F9FAFB);
}

/* ============================================================================
   BACKDROP
   ============================================================================ */

.drawer-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(18, 21, 31, 0.5);
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--drawer-transition), visibility var(--drawer-transition);
}

.drawer-backdrop.is-active {
    opacity: 1;
    visibility: visible;
}

/* ============================================================================
   DRAWER CONTAINER
   ============================================================================ */

.drawer {
    position: fixed;
    top: 0;
    right: 0;
    width: var(--drawer-width);
    max-width: 100%;
    height: 100vh;
    height: 100dvh; /* Dynamic viewport height for mobile */
    display: flex;
    flex-direction: column;
    background: var(--drawer-bg);
    box-shadow: var(--drawer-shadow);
    z-index: 1001;
    transform: translateX(100%);
    transition: transform var(--drawer-transition);
}

.drawer.is-active {
    transform: translateX(0);
}

/* ============================================================================
   SIZE VARIANTS
   ============================================================================ */

.drawer--sm { --drawer-width: 400px; }
.drawer--md { --drawer-width: 520px; }
.drawer--lg { --drawer-width: 700px; }
.drawer--xl { --drawer-width: 900px; }
.drawer--full { --drawer-width: 100%; }

/* ============================================================================
   HEADER
   ============================================================================ */

.drawer__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--drawer-header-padding);
    border-bottom: 1px solid var(--drawer-border-color);
    flex-shrink: 0;
}

.drawer__title {
    font-family: var(--font-heading, 'Space Grotesk', sans-serif);
    font-size: var(--font-size-h2, 20px);
    font-weight: 600;
    color: var(--color-text-primary, #12151F);
    margin: 0;
    line-height: 1.4;
}

.drawer__subtitle {
    font-family: var(--font-body, 'Inter', sans-serif);
    font-size: var(--font-size-p4, 13px);
    color: var(--color-text-muted, #7A839F);
    margin: 4px 0 0 0;
}

.drawer__header-content {
    flex: 1;
    min-width: 0;
}

.drawer__close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    margin-left: var(--spacing-md, 12px);
    padding: 0;
    background: transparent;
    border: none;
    border-radius: var(--radius-md, 8px);
    color: var(--color-text-muted, #7A839F);
    cursor: pointer;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.drawer__close:hover {
    background: var(--color-bg-secondary, #F3F4F6);
    color: var(--color-text-primary, #12151F);
}

.drawer__close:focus {
    outline: 2px solid var(--color-primary, #3E68FB);
    outline-offset: 2px;
}

.drawer__close:active {
    transform: scale(0.95);
}

.drawer__close i,
.drawer__close .mdi {
    font-size: 24px;
}

/* ============================================================================
   BODY
   ============================================================================ */

.drawer__body {
    flex: 1;
    overflow-y: auto;
    padding: var(--drawer-body-padding);
}

/* Custom scrollbar */
.drawer__body::-webkit-scrollbar {
    width: 6px;
}

.drawer__body::-webkit-scrollbar-track {
    background: transparent;
}

.drawer__body::-webkit-scrollbar-thumb {
    background: var(--color-border, #CED3E2);
    border-radius: 3px;
}

.drawer__body::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-muted, #7A839F);
}

/* Firefox scrollbar */
.drawer__body {
    scrollbar-width: thin;
    scrollbar-color: var(--color-border, #CED3E2) transparent;
}

/* ============================================================================
   FOOTER
   ============================================================================ */

.drawer__footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--spacing-md, 12px);
    padding: var(--drawer-footer-padding);
    border-top: 1px solid var(--drawer-border-color);
    background: var(--drawer-footer-bg);
    flex-shrink: 0;
}

/* Footer alignment variants */
.drawer__footer--start {
    justify-content: flex-start;
}

.drawer__footer--center {
    justify-content: center;
}

.drawer__footer--between {
    justify-content: space-between;
}

/* ============================================================================
   CONTENT SECTIONS (for structured content)
   ============================================================================ */

.drawer__section {
    margin-bottom: var(--spacing-xl, 24px);
}

.drawer__section:last-child {
    margin-bottom: 0;
}

.drawer__section-title {
    font-family: var(--font-body, 'Inter', sans-serif);
    font-size: var(--font-size-p3, 14px);
    font-weight: 600;
    color: var(--color-text-primary, #12151F);
    margin: 0 0 var(--spacing-md, 12px) 0;
}

/* ============================================================================
   FORM INSIDE DRAWER
   ============================================================================ */

.drawer__form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg, 20px);
}

.drawer__form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm, 8px);
}

.drawer__form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg, 20px);
}

.drawer__form-row--3 {
    grid-template-columns: repeat(3, 1fr);
}

.drawer__label {
    font-family: var(--font-body, 'Inter', sans-serif);
    font-size: var(--font-size-p3, 14px);
    font-weight: 500;
    color: var(--color-text-primary, #12151F);
}

.drawer__label--required::after {
    content: ' *';
    color: var(--color-danger, #C90A0A);
}

/* ============================================================================
   ERROR DISPLAY
   ============================================================================ */

.drawer__errors {
    padding: var(--spacing-md, 12px);
    background: rgba(201, 10, 10, 0.08);
    border: 1px solid var(--color-danger, #C90A0A);
    border-radius: var(--radius-md, 8px);
    margin-bottom: var(--spacing-lg, 20px);
}

.drawer__errors ul {
    margin: 0;
    padding-left: var(--spacing-lg, 20px);
}

.drawer__errors li {
    font-size: var(--font-size-p4, 13px);
    color: var(--color-danger, #C90A0A);
    margin-bottom: var(--spacing-xs, 4px);
}

.drawer__errors li:last-child {
    margin-bottom: 0;
}

/* ============================================================================
   LOADING STATE
   ============================================================================ */

.drawer--loading {
    pointer-events: none;
}

.drawer--loading .drawer__body {
    position: relative;
}

.drawer--loading .drawer__body::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
}

.drawer__loading-spinner {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    border: 4px solid var(--color-border-light, #ECEDF2);
    border-top-color: var(--color-primary, #3E68FB);
    border-radius: 50%;
    animation: drawer-spinner 0.8s linear infinite;
    z-index: 1;
}

@keyframes drawer-spinner {
    to {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

/* ============================================================================
   EMPTY STATE
   ============================================================================ */

.drawer__empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3xl, 48px) var(--spacing-xl, 24px);
    text-align: center;
}

.drawer__empty-icon {
    font-size: 48px;
    color: var(--color-text-muted, #7A839F);
    margin-bottom: var(--spacing-lg, 16px);
}

.drawer__empty-title {
    font-size: var(--font-size-p2, 16px);
    font-weight: 500;
    color: var(--color-text-primary, #12151F);
    margin: 0 0 var(--spacing-sm, 8px) 0;
}

.drawer__empty-text {
    font-size: var(--font-size-p4, 13px);
    color: var(--color-text-muted, #7A839F);
    margin: 0;
}

/* ============================================================================
   DARK MODE
   ============================================================================ */

.dark .drawer-backdrop,
[data-theme="dark"] .drawer-backdrop,
body.dark-mode .drawer-backdrop {
    background: rgba(0, 0, 0, 0.7);
}

.dark .drawer,
[data-theme="dark"] .drawer,
body.dark-mode .drawer {
    --drawer-bg: #10141D;
    --drawer-border-color: #212533;
    --drawer-footer-bg: #161B26;
    background: #10141D;
}

.dark .drawer__title,
[data-theme="dark"] .drawer__title,
body.dark-mode .drawer__title {
    color: var(--color-text-primary, #E5E7EB);
}

.dark .drawer__subtitle,
[data-theme="dark"] .drawer__subtitle,
body.dark-mode .drawer__subtitle {
    color: var(--color-text-muted, #9CA3AF);
}

.dark .drawer__close,
[data-theme="dark"] .drawer__close,
body.dark-mode .drawer__close {
    color: var(--color-text-muted, #9CA3AF);
}

.dark .drawer__close:hover,
[data-theme="dark"] .drawer__close:hover,
body.dark-mode .drawer__close:hover {
    background: var(--color-bg-tertiary, #1E2432);
    color: var(--color-text-primary, #E5E7EB);
}

.dark .drawer__section-title,
[data-theme="dark"] .drawer__section-title,
body.dark-mode .drawer__section-title {
    color: var(--color-text-primary, #E5E7EB);
}

.dark .drawer__label,
[data-theme="dark"] .drawer__label,
body.dark-mode .drawer__label {
    color: var(--color-text-primary, #E5E7EB);
}

.dark .drawer--loading .drawer__body::after,
[data-theme="dark"] .drawer--loading .drawer__body::after,
body.dark-mode .drawer--loading .drawer__body::after {
    background: rgba(16, 20, 29, 0.8);
}

.dark .drawer__empty-title,
[data-theme="dark"] .drawer__empty-title,
body.dark-mode .drawer__empty-title {
    color: var(--color-text-primary, #E5E7EB);
}

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

@media (max-width: 640px) {
    .drawer {
        max-width: 100%;
        --drawer-width: 100%;
    }

    .drawer__header {
        padding: var(--spacing-lg, 16px);
    }

    .drawer__body {
        padding: var(--spacing-lg, 16px);
    }

    .drawer__footer {
        padding: var(--spacing-md, 12px) var(--spacing-lg, 16px);
        flex-direction: column;
    }

    .drawer__footer > * {
        width: 100%;
    }

    .drawer__form-row,
    .drawer__form-row--3 {
        grid-template-columns: 1fr;
    }
}

/* ============================================================================
   ACCESSIBILITY
   ============================================================================ */

@media (prefers-reduced-motion: reduce) {
    .drawer-backdrop,
    .drawer,
    .drawer__close {
        animation: none !important;
        transition: none !important;
    }

    .drawer-backdrop.is-active {
        opacity: 1;
    }

    .drawer.is-active {
        transform: translateX(0);
    }
}

/* Focus visible for keyboard navigation */
.drawer__close:focus-visible {
    outline: 2px solid var(--color-primary, #3E68FB);
    outline-offset: 2px;
}

/* High contrast mode */
@media (prefers-contrast: high) {
    .drawer {
        border-left: 2px solid var(--color-border, #CED3E2);
    }

    .drawer__header,
    .drawer__footer {
        border-color: var(--color-border, #CED3E2);
    }
}

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

/* Prevent body scroll when drawer is open */
body.drawer-open {
    overflow: hidden;
}

/* No header variant */
.drawer--no-header .drawer__header {
    display: none;
}

/* No footer variant */
.drawer--no-footer .drawer__footer {
    display: none;
}

/* No padding variant */
.drawer--no-padding .drawer__body {
    padding: 0;
}

/* ============================================================================
   PRINT
   ============================================================================ */

@media print {
    .drawer-backdrop,
    .drawer {
        display: none !important;
    }
}