/**
 * Django Puzzle CAPTCHA - Estilos CSS
 * 
 * Estilos modernos e responsivos para o modal de quebra-cabeça.
 * Suporta customização via CSS Variables.
 * 
 * @author IntGest Development Team
 * @version 2.0.0
 */

/* ==================== CSS VARIABLES (CUSTOMIZÁVEIS) ==================== */
:root {
    /* Cores principais */
    --puzzle-primary-color: #667eea;
    --puzzle-primary-color-dark: #764ba2;
    --puzzle-secondary-color: #6b7280;
    
    /* Header */
    --puzzle-header-bg: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --puzzle-header-text-color: #ffffff;
    --puzzle-header-font-size: 1rem;
    --puzzle-header-font-weight: 600;
    --puzzle-title-font-size: 1.5rem;
    --puzzle-title-font-weight: 800;
    
    /* Modal */
    --puzzle-modal-bg: #ffffff;
    --puzzle-modal-border-radius: 0.5rem;
    --puzzle-modal-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --puzzle-overlay-color: rgba(0, 0, 0, 0.75);
    
    /* Body */
    --puzzle-body-bg: #ffffff;
    --puzzle-body-padding: 2.5rem 1.5rem;
    
    /* Canvas */
    --puzzle-canvas-border-color: #e5e7eb;
    --puzzle-canvas-bg: #f9fafb;
    --puzzle-canvas-border-radius: 0.5rem;
    --puzzle-piece-highlight-color: rgba(59, 130, 246, 0.5);
    --puzzle-piece-shadow-color: rgba(0, 0, 0, 0.4);
    --puzzle-piece-success-color: rgba(34, 197, 94, 0.6);
    --puzzle-piece-error-color: rgba(239, 68, 68, 0.6);
    
    /* Footer */
    --puzzle-footer-bg: #f9fafb;
    --puzzle-footer-border-color: #e5e7eb;
    
    /* Botões */
    --puzzle-button-bg: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --puzzle-button-text-color: #ffffff;
    --puzzle-button-font-size: 0.875rem;
    --puzzle-button-font-weight: 700;
    --puzzle-button-padding: 0.75rem 2rem;
    --puzzle-button-border-radius: 0.5rem;
    
    /* Mensagens */
    --puzzle-error-color: #dc2626;
    --puzzle-success-color: #16a34a;
    --puzzle-warning-color: #d97706;
    
    /* Loading */
    --puzzle-spinner-color: #667eea;
    --puzzle-spinner-bg: #f3f4f6;
    --puzzle-loading-text-color: #374151;
    
    /* Fontes */
    --puzzle-font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    
    /* Animações */
    --puzzle-animation-duration: 0.3s;
    --puzzle-transition-timing: ease;
}

/* ==================== TEMA ESCURO (data-theme="dark") ==================== */
[data-puzzle-theme="dark"] {
    --puzzle-primary-color: #818cf8;
    --puzzle-primary-color-dark: #6366f1;
    --puzzle-header-bg: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    --puzzle-modal-bg: #1f2937;
    --puzzle-overlay-color: rgba(0, 0, 0, 0.85);
    --puzzle-body-bg: #1f2937;
    --puzzle-canvas-border-color: #374151;
    --puzzle-canvas-bg: #111827;
    --puzzle-footer-bg: #111827;
    --puzzle-footer-border-color: #374151;
    --puzzle-button-bg: linear-gradient(135deg, #6366f1 0%, #7c3aed 100%);
    --puzzle-loading-text-color: #d1d5db;
    --puzzle-error-color: #f87171;
    --puzzle-success-color: #4ade80;
}

/* ==================== MODAL BASE ==================== */
#modal-puzzle {
    position: fixed;
    z-index: 9999;
    inset: 0;
    overflow-y: auto;
    font-family: var(--puzzle-font-family);
}

#modal-puzzle.hidden {
    display: none;
}

#modal-puzzle.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Background overlay */
.bg-overlay {
    position: fixed;
    inset: 0;
    background-color: var(--puzzle-overlay-color);
    transition: opacity var(--puzzle-animation-duration) var(--puzzle-transition-timing);
}

/* Modal box */
.modal-box {
    position: relative;
    background-color: var(--puzzle-modal-bg);
    border-radius: var(--puzzle-modal-border-radius);
    text-align: left;
    overflow: hidden;
    box-shadow: var(--puzzle-modal-shadow);
    transform: scale(1);
    transition: all var(--puzzle-animation-duration) var(--puzzle-transition-timing);
    min-height: 200px;
    max-width: 90vw;
    max-height: 90vh;
}

@media (min-width: 768px) {
    .modal-box {
        min-height: 500px;
        max-width: 800px;
    }
}

/* ==================== MODAL HEADER ==================== */
.modal-header {
    background: var(--puzzle-header-bg);
    color: var(--puzzle-header-text-color);
    padding: 1.5rem;
    text-align: center;
}

.modal-title {
    font-size: var(--puzzle-header-font-size);
    font-weight: var(--puzzle-header-font-weight);
    text-transform: uppercase;
    margin: 0;
    color: var(--puzzle-header-text-color);
}

.modal-title strong {
    display: block;
    font-size: var(--puzzle-title-font-size);
    font-weight: var(--puzzle-title-font-weight);
    margin-top: 0.5rem;
    line-height: 1.2;
}

@media (min-width: 1024px) {
    .modal-header {
        padding: 2rem;
    }
    
    .modal-title {
        font-size: 1.125rem;
    }
    
    .modal-title strong {
        font-size: 2.5rem;
    }
}

/* Botão fechar */
.close-button,
.modal-box > div[data-dismiss="modal"] {
    position: absolute;
    top: 0.25rem;
    right: 1rem;
    font-size: 2.5rem;
    color: var(--puzzle-header-text-color);
    cursor: pointer;
    z-index: 10;
    transition: transform 0.2s var(--puzzle-transition-timing), opacity 0.2s var(--puzzle-transition-timing);
    background: none;
    border: none;
    line-height: 1;
}

.close-button:hover,
.modal-box > div[data-dismiss="modal"]:hover {
    transform: scale(1.1);
    opacity: 0.8;
}

/* ==================== MODAL BODY ==================== */
.modal-body {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    padding: var(--puzzle-body-padding);
    min-height: 300px;
    background-color: var(--puzzle-body-bg);
}

@media (min-width: 1024px) {
    .modal-body {
        flex-direction: row;
        padding: 2.5rem 3rem;
        gap: 2rem;
    }
}

/* Linha vertical separadora */
.vertical-line {
    display: none;
    width: 1px;
    height: 300px;
    background-color: var(--puzzle-canvas-border-color);
}

@media (min-width: 1024px) {
    .vertical-line {
        display: block;
    }
}

/* ==================== PUZZLE COMPONENTS ==================== */

/* Imagem original (preview) */
.original-puzzle-piece {
    width: 150px;
    height: 150px;
    flex-shrink: 0;
    border: 2px solid var(--puzzle-canvas-border-color);
    border-radius: var(--puzzle-canvas-border-radius);
    overflow: hidden;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.original-puzzle-piece img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Canvas do puzzle */
#puzzleCanvas {
    border: 2px solid var(--puzzle-canvas-border-color);
    border-radius: var(--puzzle-canvas-border-radius);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    background-color: var(--puzzle-canvas-bg);
}

/* Peças do puzzle */
.puzzle-piece {
    width: 200px;
    height: 200px;
    background-size: 400px 400px;
    cursor: grab;
    transition: transform 0.1s var(--puzzle-transition-timing), box-shadow 0.1s var(--puzzle-transition-timing);
}

.puzzle-piece:active {
    cursor: grabbing;
}

.puzzle-piece.elevated {
    box-shadow: 0 8px 16px var(--puzzle-piece-shadow-color);
    transform: translateY(-5px);
}

/* ==================== LOADING STATE ==================== */
.loading-container {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--puzzle-loading-text-color);
    gap: 1rem;
}

.spinner {
    border: 4px solid var(--puzzle-spinner-bg);
    border-top: 4px solid var(--puzzle-spinner-color);
    border-radius: 50%;
    width: 48px;
    height: 48px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

.loading-container p {
    font-weight: 700;
    font-size: 0.875rem;
    letter-spacing: 0.05em;
}

/* ==================== MODAL FOOTER ==================== */
.modal-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--puzzle-footer-bg);
    padding: 1.25rem 1.5rem;
    border-top: 1px solid var(--puzzle-footer-border-color);
}

@media (min-width: 1024px) {
    .modal-footer {
        padding: 1.5rem 2.5rem;
    }
}

/* Mensagem de erro */
#error_puzzle {
    font-size: 0.875rem;
    color: var(--puzzle-error-color);
    font-weight: 500;
    max-width: 60%;
    margin: 0;
}

/* Botão enviar */
.btn-ver-mais-primary,
#check_solution {
    background: var(--puzzle-button-bg);
    color: var(--puzzle-button-text-color);
    font-weight: var(--puzzle-button-font-weight);
    font-size: var(--puzzle-button-font-size);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: var(--puzzle-button-padding);
    border: none;
    border-radius: var(--puzzle-button-border-radius);
    cursor: pointer;
    transition: all var(--puzzle-animation-duration) var(--puzzle-transition-timing);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.btn-ver-mais-primary:hover,
#check_solution:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    filter: brightness(1.1);
}

.btn-ver-mais-primary:active,
#check_solution:active {
    transform: translateY(0);
}

.btn-ver-mais-primary:disabled,
#check_solution:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* ==================== RESPONSIVE ADJUSTMENTS ==================== */
@media (max-width: 767px) {
    .modal-body {
        gap: 1rem;
        padding: 1.5rem 1rem;
    }
    
    .original-puzzle-piece {
        width: 100px;
        height: 100px;
    }
    
    #puzzleCanvas {
        width: 250px !important;
        height: 250px !important;
    }
    
    .modal-footer {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    
    #error_puzzle {
        max-width: 100%;
        text-align: center;
    }
    
    .btn-ver-mais-primary,
    #check_solution {
        width: 100%;
    }
}

/* ==================== ACCESSIBILITY ==================== */
#check_solution:focus,
.btn-ver-mais-primary:focus {
    outline: 2px solid var(--puzzle-primary-color);
    outline-offset: 2px;
}

/* Reduz motion para usuários com preferência */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ==================== TEMAS PREDEFINIDOS ==================== */

/* Tema Verde/Natureza */
[data-puzzle-theme="nature"] {
    --puzzle-primary-color: #059669;
    --puzzle-primary-color-dark: #047857;
    --puzzle-header-bg: linear-gradient(135deg, #059669 0%, #047857 100%);
    --puzzle-button-bg: linear-gradient(135deg, #059669 0%, #047857 100%);
    --puzzle-spinner-color: #059669;
}

/* Tema Laranja/Sunset */
[data-puzzle-theme="sunset"] {
    --puzzle-primary-color: #ea580c;
    --puzzle-primary-color-dark: #c2410c;
    --puzzle-header-bg: linear-gradient(135deg, #f97316 0%, #ea580c 100%);
    --puzzle-button-bg: linear-gradient(135deg, #f97316 0%, #ea580c 100%);
    --puzzle-spinner-color: #ea580c;
}

/* Tema Azul/Ocean */
[data-puzzle-theme="ocean"] {
    --puzzle-primary-color: #0284c7;
    --puzzle-primary-color-dark: #0369a1;
    --puzzle-header-bg: linear-gradient(135deg, #0ea5e9 0%, #0284c7 100%);
    --puzzle-button-bg: linear-gradient(135deg, #0ea5e9 0%, #0284c7 100%);
    --puzzle-spinner-color: #0284c7;
}

/* Tema Rosa/Rose */
[data-puzzle-theme="rose"] {
    --puzzle-primary-color: #db2777;
    --puzzle-primary-color-dark: #be185d;
    --puzzle-header-bg: linear-gradient(135deg, #ec4899 0%, #db2777 100%);
    --puzzle-button-bg: linear-gradient(135deg, #ec4899 0%, #db2777 100%);
    --puzzle-spinner-color: #db2777;
}

/* Tema Cinza/Minimal */
[data-puzzle-theme="minimal"] {
    --puzzle-primary-color: #374151;
    --puzzle-primary-color-dark: #1f2937;
    --puzzle-header-bg: linear-gradient(135deg, #4b5563 0%, #374151 100%);
    --puzzle-button-bg: linear-gradient(135deg, #4b5563 0%, #374151 100%);
    --puzzle-spinner-color: #374151;
}