/* =====================================================================
 *  Generador de Rutinas Anti-Estrés — Estilos Mejorados
 * ===================================================================== */

:root {
    --color-primary: #6366f1;
    --color-primary-dark: #4f46e5;
    --color-primary-light: #818cf8;
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --color-accent: #06b6d4;
    --color-accent-light: #22d3ee;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    --color-text: #1f2937;
    --color-text-secondary: #6b7280;
    --color-text-light: #9ca3af;
    --color-border: #e5e7eb;
    --color-bg: #f9fafb;
    --color-bg-soft: #f3f4f6;
    --color-bg-softer: #eff6ff;
    --color-bg-white: #ffffff;
    --radius-lg: 16px;
    --radius-md: 12px;
    --radius-sm: 8px;
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-md: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 25px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 25px 50px rgba(0, 0, 0, 0.15);
    --transition-fast: 0.15s ease;
    --transition: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    background: linear-gradient(135deg, #f3f4f6 0%, #eff6ff 100%);
    min-height: 100vh;
    padding: 24px;
    color: var(--color-text);
    line-height: 1.6;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    background: var(--color-bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    min-height: calc(100vh - 48px);
}

/* ---------- Header ---------- */
.header {
    background: var(--gradient-primary);
    color: #fff;
    padding: 48px 32px;
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 400px;
    height: 400px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
    pointer-events: none;
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 32px;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

.header-top > div:first-child {
    flex: 1;
}

.header-top > div:last-child {
    text-align: right;
    flex-shrink: 0;
}

.user-bar {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.95em;
    margin-top: 12px;
    display: flex;
    align-items: center;
    gap: 16px;
    justify-content: flex-end;
    flex-wrap: wrap;
}

.user-bar a {
    color: #fff;
    font-weight: 600;
    text-decoration: none;
    padding: 6px 16px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
}

.user-bar a:hover {
    background: rgba(255, 255, 255, 0.3);
}

.header h1 {
    font-size: 2.25em;
    margin-bottom: 12px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.header p {
    opacity: 0.95;
    font-size: 1.05em;
    font-weight: 400;
    margin: 0;
}

/* ---------- Content ---------- */
.content {
    padding: 40px 32px;
    flex: 1;
    overflow-y: auto;
}

.brand-card {
    background: var(--color-bg-softer);
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-md);
    padding: 24px;
    margin-bottom: 32px;
    text-align: center;
    box-shadow: var(--shadow-xs);
    color: var(--color-primary);
}

/* ---------- Form ---------- */
.form-group {
    margin-bottom: 28px;
}

label {
    display: block;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--color-text);
    font-size: 0.95em;
}

input[type="number"],
input[type="text"],
input[type="email"],
input[type="password"],
select,
textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 0.95em;
    font-family: inherit;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
    background: var(--color-bg-white);
    color: var(--color-text);
}

input[type="number"]::placeholder,
input[type="text"]::placeholder,
textarea::placeholder {
    color: var(--color-text-light);
}

input[type="number"]:focus,
input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
    background-color: rgba(99, 102, 241, 0.02);
}

textarea {
    resize: vertical;
    min-height: 110px;
    line-height: 1.5;
}

.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    background: linear-gradient(135deg, #f3f4f6 0%, #eff6ff 100%);
}

.auth-card {
    width: 100%;
    max-width: 420px;
    background: var(--color-bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 40px;
    border: 1px solid var(--color-border);
}

.auth-card h2 {
    margin-bottom: 28px;
    font-size: 1.875rem;
    color: var(--color-primary);
    font-weight: 700;
}

.auth-message {
    margin-bottom: 24px;
    padding: 14px 16px;
    border-radius: var(--radius-md);
    font-size: 0.95em;
    border-left: 4px solid;
}

.auth-message.error {
    background: #fef2f2;
    color: #991b1b;
    border-left-color: #dc2626;
}

.auth-message.success {
    background: #f0fdf4;
    color: #166534;
    border-left-color: #22c55e;
}

.auth-card form {
    display: grid;
    gap: 20px;
}

.auth-card .form-group label {
    margin-bottom: 8px;
    font-size: 0.9em;
}

.auth-card input[type="email"],
.auth-card input[type="password"],
.auth-card input[type="text"] {
    width: 100%;
}

.auth-submit {
    width: 100%;
    padding: 12px 24px;
    background: var(--gradient-primary);
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.95em;
    cursor: pointer;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.auth-submit:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.auth-submit:active {
    transform: translateY(0);
}

.auth-footer {
    margin-top: 24px;
    text-align: center;
    font-size: 0.9em;
    color: var(--color-text-secondary);
}

.auth-footer a {
    color: var(--color-primary);
    font-weight: 600;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.auth-footer a:hover {
    color: var(--color-primary-dark);
}

/* ---------- Buttons ---------- */
.button-group {
    display: flex;
    gap: 12px;
    margin-top: 32px;
    flex-wrap: wrap;
}

button {
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.95em;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: inherit;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-generar,
.btn-limpiar {
    flex: 1;
    min-width: 140px;
}

.btn-generar {
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: var(--shadow-sm);
    font-weight: 600;
}

.btn-generar:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-generar:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-limpiar {
    background: var(--color-bg-soft);
    color: var(--color-text);
    border: 1.5px solid var(--color-border);
}

.btn-limpiar:hover {
    background: var(--color-border);
    border-color: var(--color-text-light);
}

.btn-secondary,
.btn-danger {
    width: auto;
    min-width: 140px;
    padding: 10px 20px;
    font-size: 0.9em;
}

.btn-secondary {
    background: var(--color-bg-soft);
    color: var(--color-text);
    border: 1.5px solid var(--color-border);
}

.btn-secondary:hover {
    background: var(--color-border);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.btn-danger {
    background: #fecaca;
    color: #7f1d1d;
    border: 1.5px solid #fca5a5;
}

.btn-danger:hover {
    background: #fca5a5;
    color: #581c1c;
}

.resultado-actions {
    margin-top: 20px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
}

.mensaje-guardado {
    color: var(--color-primary);
    font-weight: 600;
}

/* ---------- Tabs ---------- */
.tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 32px;
    border-bottom: 2px solid var(--color-border);
    flex-wrap: wrap;
}

.tab-btn {
    background: none;
    border: none;
    padding: 14px 20px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.95em;
    color: var(--color-text-light);
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
    transition: color var(--transition-fast), border-color var(--transition-fast);
    position: relative;
}

.tab-btn:hover {
    color: var(--color-text-secondary);
}

.tab-btn.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ---------- Resultado ---------- */
.resultado {
    background: var(--color-bg-softer);
    border-left: 5px solid var(--color-primary);
    padding: 24px;
    border-radius: var(--radius-md);
    margin-top: 24px;
    max-height: 600px;
    overflow-y: auto;
    line-height: 1.8;
    display: none;
    box-shadow: var(--shadow-xs);
}

.resultado.mostrar {
    display: block;
}

.resultado h3 {
    color: var(--color-primary);
    margin-bottom: 16px;
    font-size: 1.25em;
}

.resultado ol,
.resultado ul {
    margin-left: 24px;
    margin-top: 12px;
}

.resultado li {
    margin-bottom: 10px;
    color: var(--color-text-secondary);
}

.resultado strong {
    color: var(--color-text);
    font-weight: 600;
}

.continuar-chat {
    margin-top: 28px;
    padding: 20px;
    border-radius: var(--radius-md);
    background: var(--color-bg-white);
    border: 2px solid var(--color-border);
}

.continuar-chat textarea {
    min-height: 120px;
    margin-bottom: 16px;
}

.continuacion-rutina {
    margin-top: 28px;
    padding: 20px;
    border-radius: var(--radius-md);
    background: var(--color-bg-softer);
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.mensaje-usuario {
    margin-bottom: 16px;
    padding: 14px 16px;
    border-radius: var(--radius-sm);
    background: var(--color-bg-white);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-left: 4px solid var(--color-primary);
}

.mensaje-usuario strong {
    display: block;
    margin-bottom: 8px;
    color: var(--color-primary);
    font-size: 0.9em;
    font-weight: 600;
}

.mensaje-usuario div {
    white-space: pre-wrap;
    line-height: 1.6;
    color: var(--color-text);
}

.separador-chat {
    margin: 16px 0;
    height: 1px;
    background: rgba(99, 102, 241, 0.2);
}

#contenido-rutina > * + * {
    margin-top: 20px;
}

.resultado-footer {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 2px solid var(--color-border);
    text-align: center;
    font-size: 0.9em;
    color: var(--color-text-light);
}

/* ---------- Loading ---------- */
.loading {
    display: none;
    text-align: center;
    padding: 40px;
}

.loading.activo {
    display: block;
}

.spinner {
    border: 4px solid var(--color-bg);
    border-top: 4px solid var(--color-primary);
    border-radius: 50%;
    width: 48px;
    height: 48px;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 16px;
}

.loading p {
    color: var(--color-text-secondary);
    font-size: 0.95em;
    margin: 0;
}

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

/* ---------- Historial ---------- */
.historial {
    max-height: 600px;
    overflow-y: auto;
}

.historial-item {
    background: var(--color-bg-white);
    padding: 16px;
    margin-bottom: 12px;
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-primary);
    transition: box-shadow var(--transition-fast);
    border: 1px solid var(--color-border);
}

.historial-item:hover {
    box-shadow: var(--shadow-sm);
}

.historial-item h4 {
    color: var(--color-primary);
    margin-bottom: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    font-size: 0.95em;
    font-weight: 600;
}

.historial-item p {
    color: var(--color-text-secondary);
    font-size: 0.9em;
    margin-bottom: 4px;
}

.fecha {
    font-size: 0.8em;
    color: var(--color-text-light);
    font-weight: 400;
}

.btn-toggle-rutina {
    margin-top: 12px;
    width: 100%;
    background: var(--gradient-primary);
    color: #fff;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.85em;
    font-weight: 500;
    border: none;
    cursor: pointer;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-toggle-rutina:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.rutina-completa {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--color-border);
    line-height: 1.7;
    color: var(--color-text);
    font-size: 0.9em;
}

.empty-state {
    text-align: center;
    color: var(--color-text-light);
    padding: 40px 20px;
}

/* ---------- Opciones tipo ---------- */
.opciones-tipo {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 12px;
    margin-bottom: 8px;
}

.opcion-tipo {
    padding: 14px 12px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    background: var(--color-bg-white);
    font-size: 0.9em;
    font-weight: 500;
    color: var(--color-text);
    min-height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.opcion-tipo:hover {
    border-color: var(--color-primary);
    background: var(--color-bg-softer);
    transform: translateY(-2px);
    box-shadow: var(--shadow-xs);
}

.opcion-tipo.seleccionado {
    background: var(--gradient-primary);
    color: #fff;
    border-color: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

/* ---------- Info cards ---------- */
.info-card {
    padding: 20px;
    border-radius: var(--radius-md);
    margin-bottom: 20px;
    background: var(--color-bg-softer);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-left: 4px solid var(--color-primary);
}

.info-card h4 {
    margin-bottom: 10px;
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.95em;
}

.info-card p {
    color: var(--color-text-secondary);
    font-size: 0.9em;
    margin-bottom: 8px;
}

.info-card ul {
    margin-left: 20px;
    margin-top: 10px;
    color: var(--color-text-secondary);
}

.info-card li {
    margin-bottom: 6px;
    font-size: 0.9em;
}

.info-card--primary {
    background: var(--color-bg-softer);
    border-left-color: var(--color-primary);
}

.info-card--primary h4 {
    color: var(--color-primary);
}

.info-card--warning {
    background: #fefce8;
    border-left-color: var(--color-warning);
}

.info-card--warning h4 {
    color: var(--color-warning);
}

.info-card--info {
    background: #f0f9ff;
    border-left-color: var(--color-accent);
}

.info-card--info h4 {
    color: var(--color-accent);
}

.info-card a {
    color: var(--color-primary);
    font-weight: 600;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.info-card a:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
    :root {
        --radius-lg: 12px;
    }

    body {
        padding: 16px;
    }

    .container {
        min-height: auto;
    }

    .header {
        padding: 32px 20px;
    }

    .header::before {
        display: none;
    }

    .header h1 {
        font-size: 1.75em;
    }

    .header-top {
        flex-direction: column;
        gap: 16px;
    }

    .user-bar {
        justify-content: flex-start;
    }

    .content {
        padding: 20px;
    }

    .tab-btn {
        padding: 12px 16px;
        font-size: 0.9em;
    }

    .button-group {
        flex-direction: column;
        gap: 10px;
    }

    .btn-generar,
    .btn-limpiar {
        flex: 1;
    }

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

    .resultado {
        max-height: 400px;
        padding: 16px;
    }

    .form-group {
        margin-bottom: 20px;
    }
}

@media (max-width: 480px) {
    .header h1 {
        font-size: 1.5em;
    }

    .header p {
        font-size: 0.95em;
    }

    .tab-btn {
        padding: 10px 12px;
        font-size: 0.85em;
    }

    label {
        font-size: 0.9em;
    }

    input[type="number"],
    input[type="text"],
    input[type="email"],
    input[type="password"],
    select,
    textarea {
        font-size: 16px;
        padding: 10px 12px;
    }

    .opciones-tipo {
        grid-template-columns: 1fr;
    }

    .button-group {
        flex-direction: column;
    }

    .auth-card {
        padding: 24px;
    }
}

/* ---------- Scrollbar ---------- */
.resultado::-webkit-scrollbar,
.historial::-webkit-scrollbar {
    width: 6px;
}

.resultado::-webkit-scrollbar-track,
.historial::-webkit-scrollbar-track {
    background: var(--color-bg);
}

.resultado::-webkit-scrollbar-thumb,
.historial::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 3px;
}

.resultado::-webkit-scrollbar-thumb:hover,
.historial::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary);
}

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

/* Focus visible para accesibilidad */
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
a:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}