/* ========================================================================= */
/*  ARCHIVO COMPLETO: static/css/style.css                                   */
/*  Versión Final: Logo Centrado                                             */
/* ========================================================================= */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
    --bg-dark-navy: #131c3b;
    --primary-action-teal: #18a085;
    --accent-title-green: #0b686b;
    --hover-turquoise: #18747c;
    --bg-input-dark: #1e294b;
    --border-dark: #2d3a5f;
    --text-light-primary: #e1e9f5;
    --text-light-secondary: #a0aec0;
    --text-on-action: #ffffff;
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --border-radius: 6px;
    --box-shadow-focus: 0 0 0 3px rgba(24, 160, 133, 0.4);
}

body, html {
    font-family: var(--font-main);
    margin: 0;
    padding: 0;
    background-color: var(--bg-dark-navy);
    color: var(--text-light-primary);
    height: 100vh;
    overflow: hidden;
    font-size: 14px;
}

.app-container {
    display: flex;
    width: 100%;
    height: 100%;
}

.sidebar {
    width: 340px;
    background-color: var(--bg-dark-navy);
    padding: 24px;
    display: flex;
    flex-direction: column;
    height: 100vh;
    box-sizing: border-box;
    overflow-y: auto;
    border-right: 1px solid var(--border-dark);
}

.sidebar-header {
    text-align: center; /* <<---- CAMBIO APLICADO AQUÍ */
    margin-bottom: 14px;
}

.sidebar-header .logo-image {
    max-width: 140px;
    height: auto;
    margin-bottom: 2px;
}

.sidebar-header h2 {
    font-size: 1.6em;
    color: var(--text-light-primary);
    margin: 0 0 8px 0;
    font-weight: 600;
}

.sidebar-header .sidebar-description {
    font-size: 0.9em;
    color: var(--text-light-secondary);
    line-height: 1.5;
    margin-bottom: 4px;
}

.form-group { margin-bottom: 16px; }

.form-group select,
.form-group input[type="text"] {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-dark);
    border-radius: var(--border-radius);
    background-color: var(--bg-input-dark);
    color: var(--text-light-primary);
    box-sizing: border-box;
    font-size: 0.95em;
    font-family: var(--font-main);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

/* --- Estilos SOLO para Selects (la flecha) --- */
.form-group select {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23a0aec0' viewBox='0 0 16 16'%3E%3Cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.8rem center;
    padding-right: 2.5rem; /* Espacio extra para que el texto no se ponga debajo de la flecha */
}
.form-group select:required:invalid {
    color: var(--text-light-secondary);
}
.form-group select option {
    color: var(--text-light-primary);
}

.form-group select:focus,
.form-group input[type="text"]:focus,
.instruction-area textarea:focus {
    outline: none;
    border-color: var(--primary-action-teal);
    box-shadow: var(--box-shadow-focus);
}

.content-area {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    height: 100vh;
    box-sizing: border-box;
}

.content-header {
    padding: 18px 24px;
    border-bottom: 1px solid var(--border-dark);
    flex-shrink: 0;
}
.content-header h1 {
    margin: 0;
    font-size: 1.4em;
    color: var(--text-light-primary);
    font-weight: 600;
}

.editor-container {
    flex-grow: 1;
    position: relative;
    padding: 10px 24px;
    display: flex;
}
#toastuiEditor { width: 100%; height: 100%; }
.placeholder-center-content {
    position: absolute;
    top: 40%; left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: var(--text-light-secondary);
    width: 80%;
}

.toastui-editor-defaultUI {
    border: 1px solid var(--border-dark) !important;
    background: var(--bg-dark-navy) !important;
    border-radius: var(--border-radius);
}
.toastui-editor-toolbar { background: transparent !important; border-bottom-color: var(--border-dark) !important; }
.toastui-editor-toolbar-icons { color: var(--text-light-secondary) !important; border-color: var(--border-dark) !important; }
.toastui-editor-toolbar-icons:hover { color: var(--text-light-primary) !important; background: var(--bg-input-dark) !important; }
.toastui-editor-md-container, .toastui-editor-ww-container, .toastui-editor-md-preview { background-color: #ffffff !important; }
.toastui-editor-contents, .toastui-editor-contents p, .toastui-editor-contents h1, .toastui-editor-contents h2, .toastui-editor-contents h3, .toastui-editor-contents li, .toastui-editor-contents strong { color: #0f172a !important; }
.toastui-editor-contents pre { background-color: #f1f5f9; }
.toastui-editor-contents pre code { color: #334155 !important; }
.toastui-editor-defaultUI-splitter { border-color: var(--border-dark) !important; }

.instruction-area {
    padding: 16px 24px;
    border-top: 1px solid var(--border-dark);
    background-color: #10182f;
    flex-shrink: 0;
}
.instruction-area .form-group { margin: 0; }
.instruction-area textarea {
    width: 100%; min-height: 80px;
    padding: 10px 12px; resize: vertical;
    background-color: var(--bg-input-dark);
    border: 1px solid var(--border-dark);
    border-radius: var(--border-radius);
    color: var(--text-light-primary);
    font-family: var(--font-main);
}

.actions-buttons-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 16px;
}
.action-button {
    border: none; padding: 8px 16px;
    text-align: center; font-size: 0.9em;
    font-weight: 500; border-radius: var(--border-radius);
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.1s ease;
    color: var(--text-on-action);
}
.action-button:active { transform: scale(0.98); }
.action-button:disabled { opacity: 0.5; cursor: not-allowed; }

.send-button, .refine-button { background-color: var(--primary-action-teal); }
.send-button:hover:not(:disabled), .refine-button:hover:not(:disabled) { background-color: var(--hover-turquoise); }
.reset-button, .export-pdf-button, .export-word-button {
    background-color: var(--bg-input-dark);
    border: 1px solid var(--border-dark);
    color: var(--text-light-secondary);
}
.reset-button:hover:not(:disabled), .export-pdf-button:hover:not(:disabled), .export-word-button:hover:not(:disabled) {
    background-color: var(--border-dark);
    color: var(--text-light-primary);
}

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg-dark-navy); }
::-webkit-scrollbar-thumb {
    background-color: var(--border-dark);
    border-radius: 5px;
    border: 2px solid var(--bg-dark-navy);
}
::-webkit-scrollbar-thumb:hover { background-color: var(--accent-title-green); }

.form-group select option {
    background-color: var(--bg-input-dark);
    color: var(--text-light-primary);
    padding: 12px 15px;
    font-weight: normal;
    border-bottom: 1px solid var(--border-dark);
}
.form-group select option:hover { background-color: green; color: white; cursor: pointer; }
.form-group select option:checked { background-color: var(--primary-action-teal); color: white; font-weight: bold; }
.form-group select optgroup {
    font-size: 0.9em;
    font-weight: bold;
    font-style: italic;
    color: var(--primary-action-teal);
    padding: 8px 5px;
    background-color: #2a385f;
}
.form-group select option:disabled { color: var(--primary-action-teal); text-decoration: line-through; background-color: var(--bg-dark-navy); }