/* ========================================
   VARIABLES Y RESET
   ======================================== */
:root {
    /* Colores principales - Tema Telecomunicaciones (Azul/Morado) */
    --gradient-start: #E0E7FF;
    --gradient-end: #F5E6FF;
    --primary-color: #6366F1;
    --primary-hover: #4F46E5;
    --secondary-color: #EC4899;
    --text-dark: #1E293B;
    --text-light: #64748B;
    --white: #FFFFFF;
    --error-color: #EF4444;
    --success-color: #10B981;
    --border-color: #E2E8F0;
    --shadow-light: 0 4px 6px rgba(99, 102, 241, 0.08);
    --shadow-medium: 0 8px 16px rgba(99, 102, 241, 0.12);
    --shadow-heavy: 0 12px 24px rgba(99, 102, 241, 0.15);
    
    /* Tipografía */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    
    /* Espaciado */
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;
    
    /* Border radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-circle: 50%;
    
    /* Transiciones */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

body {
    font-family: var(--font-family);
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
    min-height: 100vh;
    color: var(--text-dark);
    line-height: 1.6;
    padding: 0;
    padding-top: 60px;
    overflow-x: hidden;
}

/* ========================================
   HEADER
   ======================================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.95) 0%, rgba(139, 92, 246, 0.95) 100%);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
    z-index: 1000;
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 2px solid rgba(255, 255, 255, 0.3);
}

.header-content {
    max-width: 680px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
}

.header-brand {
    font-size: 1.1rem;
    font-weight: var(--font-weight-extrabold);
    color: var(--white);
    letter-spacing: 0.5px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    white-space: nowrap;
}

.header-tagline {
    font-size: 0.75rem;
    font-weight: var(--font-weight-medium);
    color: rgba(255, 255, 255, 0.95);
    text-align: right;
    line-height: 1.3;
}

/* ========================================
   CONTAINER PRINCIPAL
   ======================================== */
.container {
    max-width: 680px;
    margin: 0 auto;
    padding: var(--spacing-md);
    position: relative;
}

/* ========================================
   INDICADORES DE PROGRESO (3 DOTS)
   ======================================== */
.progress-indicators {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
}

.indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    opacity: 0.4;
    transition: var(--transition-normal);
}

.indicator.active {
    opacity: 1;
}

.indicator-dot {
    width: 16px;
    height: 16px;
    border-radius: var(--radius-circle);
    background-color: var(--text-light);
    transition: var(--transition-normal);
}

.indicator.active .indicator-dot {
    background-color: var(--primary-color);
    transform: scale(1.2);
    box-shadow: 0 0 0 4px rgba(255, 165, 0, 0.2);
}

.indicator-label {
    font-size: 0.85rem;
    font-weight: var(--font-weight-medium);
    color: var(--text-dark);
    text-align: center;
}

/* ========================================
   AVATAR SECTION
   ======================================== */
.avatar-section {
    text-align: left;
    margin-bottom: var(--spacing-lg);
    animation: fadeInDown 0.6s ease;
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.avatar-circle {
    width: 60px;
    height: 60px;
    min-width: 60px;
    border-radius: var(--radius-circle);
    background: var(--white);
    box-shadow: var(--shadow-medium);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.avatar-img {
    width: 55px;
    height: 55px;
    border-radius: var(--radius-circle);
    object-fit: cover;
}

.avatar-message {
    background: var(--white);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: 0 var(--radius-md) var(--radius-md) var(--radius-md);
    box-shadow: var(--shadow-light);
    max-width: 85%;
    position: relative;
}

.avatar-message::before {
    content: '';
    position: absolute;
    left: -8px;
    top: 0;
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 0 8px 8px 0;
    border-color: transparent var(--white) transparent transparent;
}

.avatar-message p {
    margin: 0;
    font-size: 0.95rem;
    color: var(--text-dark);
    font-weight: var(--font-weight-medium);
    line-height: 1.5;
}

/* ========================================
   FORM CARD
   ======================================== */
.form-card {
    background: transparent;
    border-radius: 0;
    box-shadow: none;
    padding: 0;
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 0.6s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   FORM STEPS
   ======================================== */
.form-step {
    display: none;
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

.step-title {
    font-size: 1.3rem;
    font-weight: var(--font-weight-bold);
    color: var(--text-dark);
    margin-bottom: var(--spacing-lg);
    text-align: left;
    line-height: 1.4;
    background: var(--white);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: 0 var(--radius-md) var(--radius-md) var(--radius-md);
    box-shadow: var(--shadow-light);
    position: relative;
    max-width: calc(100% - 80px);
    margin-left: 80px;
}

.step-title::before {
    content: '';
    position: absolute;
    left: -8px;
    top: 0;
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 0 8px 8px 0;
    border-color: transparent var(--white) transparent transparent;
}

/* ========================================
   OPTIONS GRID
   ======================================== */
.options-grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    margin-left: 68px;
    max-width: 85%;
}

.options-grid.provider-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
}

.option-card {
    position: relative;
    cursor: pointer;
    transition: var(--transition-normal);
}

.option-card input[type="radio"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.option-content {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--white);
    transition: var(--transition-normal);
    min-height: auto;
}

.option-content i {
    font-size: 1.5rem;
    color: var(--primary-color);
    transition: var(--transition-normal);
}

.option-content span {
    font-size: 1rem;
    font-weight: var(--font-weight-semibold);
    color: var(--text-dark);
    text-align: left;
}

.option-card:hover .option-content {
    border-color: var(--primary-color);
    transform: translateX(4px);
    box-shadow: var(--shadow-medium);
}

.option-card input[type="radio"]:checked + .option-content {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15) 0%, rgba(139, 92, 246, 0.08) 100%);
    box-shadow: var(--shadow-medium);
    transform: translateX(4px);
}

.option-card input[type="radio"]:checked + .option-content i {
    transform: scale(1.1);
}

/* Full width option */
.option-card.full-width {
    width: 100%;
}

/* Provider cards con logos */
.provider-card .option-content {
    flex-direction: column;
    justify-content: center;
    padding: var(--spacing-md);
    min-height: 100px;
}

.provider-card .option-content img {
    width: 100%;
    max-width: 120px;
    height: auto;
    object-fit: contain;
}

.provider-card .option-content .provider-text {
    font-size: 1.1rem;
    font-weight: var(--font-weight-bold);
    color: var(--text-dark);
    text-align: center;
}

.option-card input[type="radio"]:checked + .option-content .provider-text {
    color: var(--primary-color);
}

/* ========================================
   FORM FIELDS
   ======================================== */
.form-fields {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-left: 68px;
    max-width: 85%;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.input-group label {
    font-size: 0.85rem;
    font-weight: var(--font-weight-semibold);
    color: var(--text-light);
    margin-left: var(--spacing-xs);
}

.input-group input {
    padding: var(--spacing-md) var(--spacing-lg);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: var(--font-family);
    color: var(--text-dark);
    transition: var(--transition-fast);
    background: var(--white);
}

.input-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(255, 165, 0, 0.1);
    transform: translateX(4px);
}

.input-group input.error {
    border-color: var(--error-color);
}

.input-group input.success {
    border-color: var(--success-color);
}

/* ========================================
   CHECKBOX
   ======================================== */
.checkbox-group {
    margin-top: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    background: var(--white);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 2px solid var(--border-color);
}

.checkbox-group label {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    cursor: pointer;
    font-size: 0.85rem;
    color: var(--text-light);
    line-height: 1.5;
}

.checkbox-group input[type="checkbox"] {
    margin-top: 3px;
    width: 18px;
    height: 18px;
    min-width: 18px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.checkbox-group a {
    color: var(--primary-color);
    text-decoration: underline;
    font-weight: var(--font-weight-semibold);
}

.checkbox-group a:hover {
    color: var(--primary-hover);
}

/* ========================================
   ERROR MESSAGES
   ======================================== */
.error-message {
    color: var(--error-color);
    font-size: 0.85rem;
    font-weight: var(--font-weight-medium);
    margin-top: var(--spacing-xs);
    display: none;
}

.error-message.show {
    display: block;
    animation: shake 0.4s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-8px); }
    75% { transform: translateX(8px); }
}

/* ========================================
   NAVIGATION BUTTONS
   ======================================== */
.navigation-buttons {
    display: flex;
    justify-content: flex-start;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
    margin-left: 68px;
}

.btn {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1rem;
    font-weight: var(--font-weight-semibold);
    font-family: var(--font-family);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-normal);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    min-width: 160px;
    justify-content: center;
}

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

.btn-primary:hover {
    transform: translateY(-2px) translateX(2px);
    box-shadow: var(--shadow-medium);
}

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

.btn-secondary {
    background: var(--white);
    color: var(--text-dark);
    border: 2px solid var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--text-light);
    background: #F8F9FA;
}

/* ========================================
   SECURITY BADGE
   ======================================== */
.security-badge {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
    margin-left: 68px;
    padding: var(--spacing-sm);
    color: var(--text-light);
    font-size: 0.8rem;
}

.security-badge i {
    color: var(--success-color);
    font-size: 1rem;
}

/* ========================================
   THANK YOU SCREEN
   ======================================== */
.thank-you-screen {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-heavy);
    padding: var(--spacing-xxl);
    text-align: center;
    animation: fadeInUp 0.6s ease;
}

.thank-you-content {
    max-width: 500px;
    margin: 0 auto;
}

.success-icon {
    margin-bottom: var(--spacing-lg);
}

.success-icon i {
    font-size: 5rem;
    color: var(--success-color);
    animation: scaleIn 0.5s ease;
}

@keyframes scaleIn {
    from {
        transform: scale(0);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

.thank-you-screen h2 {
    font-size: 2rem;
    font-weight: var(--font-weight-bold);
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
}

.thank-you-screen p {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-lg);
}

.recommended-provider {
    background: #F8F9FA;
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

.recommended-provider img {
    max-width: 200px;
    height: auto;
}

.contact-message {
    font-size: 0.95rem !important;
    color: var(--text-dark) !important;
    font-weight: var(--font-weight-medium);
}

.savings-estimate {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, rgba(255, 165, 0, 0.1) 0%, rgba(255, 165, 0, 0.05) 100%);
    border-radius: var(--radius-md);
}

.savings-estimate i {
    font-size: 2rem;
    color: var(--primary-color);
}

.savings-estimate span {
    font-size: 1.1rem;
    color: var(--text-dark);
}

.savings-estimate strong {
    color: var(--primary-color);
    font-weight: var(--font-weight-bold);
}

/* ========================================
   MODAL
   ======================================== */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background-color: var(--white);
    margin: 5% auto;
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 700px;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: var(--shadow-heavy);
    animation: slideDown 0.4s ease;
}

@keyframes slideDown {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.close {
    color: var(--text-light);
    float: right;
    font-size: 2rem;
    font-weight: var(--font-weight-bold);
    line-height: 1;
    cursor: pointer;
    transition: var(--transition-fast);
}

.close:hover,
.close:focus {
    color: var(--text-dark);
}

.modal-content h2 {
    font-size: 1.8rem;
    font-weight: var(--font-weight-bold);
    color: var(--text-dark);
    margin-bottom: var(--spacing-lg);
}

.modal-body h3 {
    font-size: 1.2rem;
    font-weight: var(--font-weight-semibold);
    color: var(--text-dark);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

.modal-body p,
.modal-body ul {
    font-size: 0.95rem;
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.modal-body ul {
    padding-left: var(--spacing-lg);
}

.modal-body a {
    color: var(--primary-color);
    text-decoration: underline;
}

.modal-body a:hover {
    color: var(--primary-hover);
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
    background: transparent;
    margin-top: 16px;
    padding: 8px 0;
    opacity: 0.3;
    transition: opacity 0.3s ease;
}

.footer:hover {
    opacity: 0.6;
}

.footer-content {
    max-width: 680px;
    margin: 0 auto;
    text-align: center;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

.footer-content a {
    color: rgba(99, 110, 114, 0.8);
    text-decoration: none;
    font-size: 0.55rem;
    font-weight: 400;
    transition: var(--transition-fast);
    line-height: 1;
}

.footer-content a:hover {
    color: rgba(99, 110, 114, 1);
}

.footer-content .separator {
    color: rgba(99, 110, 114, 0.4);
    font-size: 0.55rem;
    line-height: 1;
}

.footer-content .copyright {
    color: rgba(99, 110, 114, 0.6);
    font-size: 0.5rem;
    line-height: 1;
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 768px) {
    body {
        padding: 0;
        padding-top: 55px;
    }
    
    .site-header {
        padding: 10px var(--spacing-md);
    }
    
    .header-content {
        flex-direction: column;
        gap: 4px;
        text-align: center;
    }
    
    .header-brand {
        font-size: 0.95rem;
    }
    
    .header-tagline {
        font-size: 0.7rem;
        text-align: center;
    }
    
    .container {
        padding: 0;
    }
    
    .progress-indicators {
        gap: var(--spacing-md);
        padding: var(--spacing-md);
    }
    
    .indicator-label {
        font-size: 0.75rem;
    }
    
    .avatar-section {
        gap: var(--spacing-sm);
    }
    
    .avatar-circle {
        width: 50px;
        height: 50px;
        min-width: 50px;
    }
    
    .avatar-img {
        width: 45px;
        height: 45px;
    }
    
    .avatar-message {
        font-size: 0.85rem;
        padding: var(--spacing-sm) var(--spacing-md);
        max-width: calc(100% - 60px);
    }
    
    .form-card,
    .thank-you-screen {
        padding: 0;
    }
    
    .step-title {
        font-size: 1rem;
        padding: var(--spacing-sm) var(--spacing-md);
        margin-left: 68px;
        max-width: calc(100% - 76px);
    }
    
    .options-grid {
        margin-left: 68px;
        max-width: calc(100% - 76px);
    }
    
    .form-fields {
        margin-left: 68px;
        max-width: calc(100% - 76px);
    }
    
    .option-content {
        padding: var(--spacing-sm) var(--spacing-md);
        min-height: auto;
    }
    
    .option-content i {
        font-size: 1.3rem;
    }
    
    .option-content span {
        font-size: 0.9rem;
    }
    
    .navigation-buttons {
        flex-direction: column;
        margin-left: 68px;
        max-width: calc(100% - 76px);
    }
    
    .security-badge {
        margin-left: 68px;
        font-size: 0.75rem;
    }
    
    .btn {
        width: 100%;
    }
    
    .modal-content {
        width: 95%;
        margin: 10% auto;
        padding: var(--spacing-lg);
    }
    
    .thank-you-screen h2 {
        font-size: 1.5rem;
    }
    
    .footer-content {
        gap: 4px;
    }
    
    .footer-content a,
    .footer-content .separator {
        font-size: 0.5rem;
    }
    
    .footer-content .copyright {
        font-size: 0.45rem;
    }
}

@media (max-width: 480px) {
    body {
        padding-top: 50px;
    }
    
    .site-header {
        padding: 8px var(--spacing-sm);
    }
    
    .header-brand {
        font-size: 0.85rem;
    }
    
    .header-tagline {
        font-size: 0.65rem;
    }
    
    .options-grid {
        grid-template-columns: 1fr;
    }
    
    .options-grid.provider-grid {
        grid-template-columns: 1fr;
    }
    
    .option-card.full-width {
        grid-column: 1;
    }
    
    .step-title {
        font-size: 0.95rem;
        padding: 10px 12px;
        margin-left: 68px;
        max-width: calc(100% - 76px);
        line-height: 1.3;
    }
    
    .avatar-circle {
        width: 48px;
        height: 48px;
        min-width: 48px;
    }
    
    .avatar-img {
        width: 43px;
        height: 43px;
    }
}