/* Reset e variáveis - Baseado no design do sistemagigantes.com */
:root {
    --color-primary: #0066cc;
    --color-primary-dark: #0052a3;
    --color-primary-light: #007bff;
    --color-secondary: #0066cc;
    --color-accent: #ff6b35;
    --color-success: #28a745;
    --color-warning: #ffc107;
    --color-danger: #dc3545;
    --color-bg: #ffffff;
    --color-bg-secondary: #f8f9fa;
    --color-bg-tertiary: #e9ecef;
    --color-text: #212529;
    --color-text-secondary: #6c757d;
    --color-text-light: #adb5bd;
    --color-border: #dee2e6;
    --color-border-light: #e9ecef;
    --color-border-focus: #0066cc;
    --color-yellow-banner: #fff3cd;
    --color-yellow-border: #ffc107;
    --font-primary: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    --font-heading: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Roboto', sans-serif;
    --border-radius: 6px;
    --border-radius-lg: 10px;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --transition: all 0.3s ease;
}

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

body {
    font-family: var(--font-primary);
    color: var(--color-text);
    background: linear-gradient(135deg, #001a33 0%, #003366 50%, #001a33 100%);
    background-attachment: fixed;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-size: 15px;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 30%, rgba(0, 102, 204, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(0, 102, 204, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(0, 51, 102, 0.1) 0%, transparent 60%);
    pointer-events: none;
    z-index: 0;
}

.container {
    display: flex;
    min-height: 100vh;
    gap: 24px;
    padding: 24px;
    max-width: 1600px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

/* Painel de Configurações */
.config-panel {
    flex: 0 0 420px;
    background: var(--color-bg);
    border-radius: var(--border-radius-lg);
    padding: 28px;
    box-shadow: var(--shadow-lg);
    overflow-y: auto;
    max-height: calc(100vh - 48px);
    border: 1px solid var(--color-border-light);
}

.panel-title {
    font-family: var(--font-heading);
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--color-primary);
    letter-spacing: -0.5px;
}

.instruction-banner {
    background: linear-gradient(135deg, #fff3cd 0%, #ffe69c 100%);
    border: 2px solid var(--color-yellow-border);
    border-radius: var(--border-radius);
    padding: 14px 18px;
    margin-bottom: 28px;
    font-size: 14px;
    font-weight: 500;
    color: #856404;
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--color-text);
    font-size: 14px;
    letter-spacing: 0.2px;
}

.input-field {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    font-size: 15px;
    font-family: var(--font-primary);
    transition: var(--transition);
    background: var(--color-bg);
    color: var(--color-text);
    font-weight: 400;
}

.input-field:focus {
    outline: none;
    border-color: var(--color-border-focus);
    box-shadow: 0 0 0 4px rgba(0, 102, 204, 0.1);
    background: #ffffff;
}

.input-field:hover {
    border-color: var(--color-border-focus);
}

.input-field::placeholder {
    color: var(--color-text-light);
    font-weight: 400;
}

/* File Input Customizado */
.file-input-wrapper {
    position: relative;
}

.file-input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.file-input-label {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
}

.file-button {
    display: inline-block;
    padding: 12px 20px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    border-radius: var(--border-radius);
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
    white-space: nowrap;
    box-shadow: var(--shadow-sm);
    border: none;
    cursor: pointer;
}

.file-button:hover {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.file-name {
    color: var(--color-text-secondary);
    font-size: 14px;
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.template-info {
    margin-top: 10px;
    padding: 10px 14px;
    background: linear-gradient(135deg, var(--color-bg-tertiary) 0%, var(--color-bg-secondary) 100%);
    border-radius: var(--border-radius);
    font-size: 13px;
    font-weight: 500;
    color: var(--color-primary);
    border: 1px solid var(--color-border-light);
}

/* Controles */
.control-row {
    display: flex;
    gap: 8px;
    margin-bottom: 8px;
    flex-wrap: wrap;
}

.control-btn {
    flex: 1;
    min-width: 90px;
    padding: 10px 14px;
    background: var(--color-bg);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    color: var(--color-text);
    box-shadow: var(--shadow-sm);
}

.control-btn:hover {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.control-btn:active {
    transform: translateY(0);
}

.hint-text {
    font-size: 12px;
    color: var(--color-text-secondary);
    margin-top: 4px;
    line-height: 1.4;
}

/* Botões de Ação */
.action-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 24px;
}

.btn {
    padding: 14px 28px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-primary);
    box-shadow: var(--shadow-md);
    letter-spacing: 0.3px;
    text-transform: uppercase;
    font-size: 14px;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    box-shadow: var(--shadow-sm);
}

.btn-preview {
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-primary-light) 100%);
    color: white;
}

.btn-preview:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-secondary) 100%);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.btn-download {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
}

.btn-download:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

/* Painel de Preview */
.preview-panel {
    flex: 1;
    background: var(--color-bg);
    border-radius: var(--border-radius-lg);
    padding: 28px;
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    min-width: 0;
    border: 1px solid var(--color-border-light);
}

.preview-container {
    flex: 1;
    position: relative;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 50%, #f8f9fa 100%);
    border-radius: var(--border-radius);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 500px;
    border: 2px dashed var(--color-border);
    padding: 20px;
}

#preview-canvas {
    max-width: 100%;
    max-height: 100%;
    display: block;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    background: white;
}

/* Texto fixo do nome (não flutuante) */
.fixed-name-text {
    position: absolute;
    left: 0;
    top: 0;
    color: #ffffff;
    font-weight: 700;
    letter-spacing: 2px;
    pointer-events: none; /* não interfere com drag da foto */
    text-shadow: 0 1px 2px rgba(0,0,0,0.25);
    user-select: none;
}

/* Label Overlay para Drag */
.label-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.label-box {
    position: absolute;
    cursor: move;
    pointer-events: all;
    border: none;
    background: transparent;
    border-radius: var(--border-radius);
    min-width: 50px;
    min-height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    user-select: none;
    transition: var(--transition);
}

.label-box.dragging {
    opacity: 0.9;
    border-color: var(--color-primary);
    background: rgba(0, 102, 204, 0.15);
    box-shadow: 0 4px 12px rgba(0, 102, 204, 0.3);
}

.label-text {
    padding: 4px 8px;
    color: var(--color-text);
    font-weight: 700;
    white-space: nowrap;
    pointer-events: none;
}

.resize-handle {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 18px;
    height: 18px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    cursor: nwse-resize;
    border-radius: 4px 0 var(--border-radius) 0;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.resize-handle:hover {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    transform: scale(1.1);
}

.resize-handle::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 10px;
    height: 10px;
    border-right: 2px solid white;
    border-bottom: 2px solid white;
}

.footer-info {
    margin-top: 20px;
    text-align: center;
    font-size: 12px;
    color: var(--color-text-secondary);
    font-weight: 500;
    letter-spacing: 0.5px;
}

/* Responsividade */
@media (max-width: 1024px) {
    .container {
        flex-direction: column;
        gap: 20px;
        padding: 20px;
    }

    .config-panel {
        flex: 1;
        max-height: none;
        flex-basis: auto;
    }

    .preview-panel {
        min-height: 500px;
    }
}

@media (max-width: 640px) {
    .container {
        padding: 16px;
        gap: 16px;
    }

    .config-panel,
    .preview-panel {
        padding: 20px;
    }

    .panel-title {
        font-size: 22px;
    }

    .control-row {
        flex-direction: column;
    }

    .control-btn {
        width: 100%;
    }

    .btn {
        padding: 12px 20px;
        font-size: 13px;
    }
}

/* Acessibilidade */
*:focus-visible {
    outline: 2px solid var(--color-border-focus);
    outline-offset: 2px;
}

button:focus-visible,
input:focus-visible,
select:focus-visible {
    outline: 2px solid var(--color-border-focus);
    outline-offset: 2px;
}

/* Loading state */
.loading {
    opacity: 0.6;
    pointer-events: none;
}