/**
 * NexoTienda - Estilos Principales
 * Paleta: Celeste (#00BCD4), Negro (#1a1a1a), Grises (#f5f5f5, #e0e0e0, #757575)
 */

/* ========================================
   RESET Y BASE
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-primary: #00BCD4;
    --color-primary-dark: #0097A7;
    --color-primary-light: #B2EBF2;
    --color-secondary: #1a1a1a;
    --color-gray-light: #f5f5f5;
    --color-gray-medium: #e0e0e0;
    --color-gray-dark: #757575;
    --color-white: #ffffff;
    --color-error: #f44336;
    --color-success: #4CAF50;
    --color-warning: #FF9800;
    --color-info: #2196F3;
    
    --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --border-radius: 8px;
    --box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-secondary);
    background-color: var(--color-gray-light);
}

/* ========================================
   TIPOGRAFÍA
   ======================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--color-secondary);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: 1rem;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: var(--transition);
}

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

/* ========================================
   BOTONES
   ======================================== */
.btn {
    display: inline-block;
    padding: 12px 24px;
    font-size: 16px;
    font-weight: 500;
    text-align: center;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    color: var(--color-white);
}

.btn-secondary {
    background-color: var(--color-gray-dark);
    color: var(--color-white);
}

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

.btn-success {
    background-color: var(--color-success);
    color: var(--color-white);
}

.btn-danger {
    background-color: var(--color-error);
    color: var(--color-white);
}

.btn-link {
    background: none;
    color: var(--color-primary);
    padding: 0;
}

.btn-block {
    display: block;
    width: 100%;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 14px;
}

/* ========================================
   FORMULARIOS
   ======================================== */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--color-secondary);
}

.form-control,
input[type="text"],
input[type="email"],
input[type="password"],
input[type="tel"],
input[type="number"],
input[type="date"],
select,
textarea {
    width: 100%;
    padding: 12px;
    font-size: 16px;
    border: 2px solid var(--color-gray-medium);
    border-radius: var(--border-radius);
    transition: var(--transition);
    font-family: inherit;
}

.form-control:focus,
input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 188, 212, 0.1);
}

.form-control.error,
input.error {
    border-color: var(--color-error);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.form-section {
    display: none;
    animation: fadeIn 0.3s ease;
}

.form-section.active {
    display: block;
}

small, .help-text {
    display: block;
    margin-top: 0.5rem;
    font-size: 14px;
    color: var(--color-gray-dark);
}

.required {
    color: var(--color-error);
}

.checkbox-group,
.radio-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.checkbox-label,
.radio-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

input[type="checkbox"],
input[type="radio"] {
    width: auto;
    margin: 0;
}

.input-group {
    display: flex;
    align-items: stretch;
}

.input-addon {
    display: flex;
    align-items: center;
    padding: 12px;
    background-color: var(--color-gray-light);
    border: 2px solid var(--color-gray-medium);
    border-right: none;
    border-radius: var(--border-radius) 0 0 var(--border-radius);
    color: var(--color-gray-dark);
}

.input-group input {
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

/* ========================================
   ALERTAS
   ======================================== */
.alert {
    padding: 1rem 1.5rem;
    margin-bottom: 1.5rem;
    border-radius: var(--border-radius);
    border-left: 4px solid;
}

.alert-success {
    background-color: #E8F5E9;
    border-color: var(--color-success);
    color: #2E7D32;
}

.alert-error {
    background-color: #FFEBEE;
    border-color: var(--color-error);
    color: #C62828;
}

.alert-warning {
    background-color: #FFF3E0;
    border-color: var(--color-warning);
    color: #E65100;
}

.alert-info {
    background-color: #E3F2FD;
    border-color: var(--color-info);
    color: #1565C0;
}

/* ========================================
   BADGES
   ======================================== */
.badge {
    display: inline-block;
    padding: 4px 12px;
    font-size: 14px;
    font-weight: 500;
    border-radius: 12px;
    text-transform: uppercase;
}

.badge-primary {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.badge-success {
    background-color: var(--color-success);
    color: var(--color-white);
}

.badge-warning {
    background-color: var(--color-warning);
    color: var(--color-white);
}

.badge-secondary {
    background-color: var(--color-gray-medium);
    color: var(--color-secondary);
}

/* ========================================
   PÁGINA DE REGISTRO
   ======================================== */
.registro-page,
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
}

.registro-container,
.login-container {
    width: 100%;
    max-width: 800px;
}

.login-container {
    max-width: 450px;
}

.registro-card,
.login-card {
    background: var(--color-white);
    border-radius: var(--border-radius);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    overflow: hidden;
}

.registro-header,
.login-header {
    background: linear-gradient(135deg, var(--color-secondary) 0%, #2d2d2d 100%);
    color: var(--color-white);
    padding: 2rem;
    text-align: center;
}

.registro-header h1,
.login-header h1 {
    color: var(--color-primary);
    margin-bottom: 0.5rem;
    font-size: 2.5rem;
}

.registro-header p,
.login-header p {
    color: var(--color-gray-medium);
    margin: 0;
}

.registro-form,
.login-form {
    padding: 2rem;
}

.form-actions {
    margin-top: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.login-link,
.login-footer {
    text-align: center;
    margin-top: 1rem;
    color: var(--color-gray-dark);
}

.login-footer {
    padding: 1.5rem 2rem;
    background-color: var(--color-gray-light);
    border-top: 1px solid var(--color-gray-medium);
}

.login-footer p {
    margin-bottom: 0.5rem;
}

/* ========================================
   ANIMACIONES
   ======================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.5rem; }
    
    .registro-container,
    .login-container {
        padding: 1rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}