/* ... Previous styles ... */
/* Stick to the existing style.css content and append/modify as needed. 
   Since I am overwriting, I should include the FULL content or use append. 
   I will use replace_file_content to append to style.css or overwrite if I have the full content in memory (I do, from view_file, but it was truncated).
   I'll just append the new styles to the end of style.css using read_file/append logic or just a big replace.
   Actually, I'll use read_file to get the full style.css first to be safe, then overwrite it with the new distinct additions.
   
   Wait, I already viewed style.css in Step 16 (lines 380-509). I need the beginning too?
   I wrote it in Step 10. I have the full content in my context memory from Step 10.
   Top is standard variables.
   I will just Append the specific new CSS for the float button.
*/

:root {
    --primary-color: #b90000;
    --primary-dark: #8a0000;
    --secondary-color: #6c757d;
    --text-color: #212529;
    --light-bg: #f8f9fa;
    --white: #ffffff;
    --warning: #ffc107;
    --danger: #dc3545;
    --success: #198754;
    --whatsapp-green: #25D366;

    --spacing-unit: 1rem;
    --container-width: 1140px;

    --shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    --radius: 1rem;
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    line-height: 1.5;
    color: var(--text-color);
    background-color: var(--light-bg);
    /* padding-bottom: 80px; Removed fixed bar padding */
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

/* Utilities */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-unit);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-weight: 700;
    border-radius: 0.375rem;
    transition: all 0.2s ease;
    cursor: pointer;
    border: none;
    text-transform: uppercase;
    font-size: 0.9rem;
    gap: 0.5rem;
}

.btn-primary {
    background-color: var(--warning);
    color: #000;
    width: 100%;
    animation: btn-pulse 2s infinite ease-in-out;
}

.btn-primary:hover {
    background-color: #e0a800;
    animation: none;
}

@keyframes btn-pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(255, 193, 7, 0.6);
    }

    70% {
        box-shadow: 0 0 0 12px rgba(255, 193, 7, 0);
    }

    100% {
        box-shadow: 0 0 0 0 rgba(255, 193, 7, 0);
    }
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--secondary-color);
    color: var(--secondary-color);
    width: 100%;
}

.btn-outline:hover {
    border-color: var(--success);
    color: var(--success);
}

.btn-success {
    background-color: var(--whatsapp-green);
    color: white;
    width: 100%;
}

.btn-success:hover {
    background-color: #128C7E;
}

/* Header */
.header {
    background-color: var(--primary-color);
    padding: 1rem 0;
    color: white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.main-nav ul {
    display: flex;
    gap: 1.5rem;
    padding: 0;
    margin: 0;
}

.main-nav a {
    color: white;
    font-weight: 600;
    font-size: 0.9rem;
    transition: opacity 0.2s;
}

.main-nav a:hover {
    opacity: 0.8;
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        text-align: center;
        gap: 1.25rem;
    }

    .brand {
        width: 100%;
    }

    .city-select {
        width: 100%;
        max-width: 400px;
        margin: 0 auto;
    }

    .city-select select {
        text-align-last: center;
        /* Centraliza o texto selecionado */
        text-align: center;
    }

    .main-nav {
        order: 3;
        width: 100%;
        justify-content: center;
        display: flex;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        padding-top: 1rem;
    }
}

@media (min-width: 768px) {
    .header-content {
        flex-direction: row;
        justify-content: space-between;
    }
}

.brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    text-align: center;
}

@media (min-width: 768px) {
    .brand {
        flex-direction: row;
        text-align: left;
        gap: 1rem;
    }
}

.brand h1 {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0;
    text-transform: uppercase;
}

.city-select {
    width: 100%;
}

.city-select select {
    padding: 0.75rem 1.25rem;
    border-radius: 0.5rem;
    border: none;
    width: 100%;
    font-size: 1rem;
    min-width: 280px;
}

@media (min-width: 768px) {
    .city-select {
        width: auto;
    }

    .city-select select {
        padding: 0.5rem 1rem;
        min-width: 200px;
        font-size: 0.9rem;
    }
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 3rem 0 2rem;
    text-align: center;
}

.hero-title {
    margin-bottom: 3rem;
}

.hero-title h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

/* Cards (Carousel on Mobile) */
.cards-container {
    display: flex;
    gap: 1rem;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    padding-bottom: 2rem;
    padding-left: 1rem;
    /* spacing for mobile scroll */
    padding-right: 1rem;
    -webkit-overflow-scrolling: touch;
}

@media (min-width: 992px) {
    .cards-container {
        justify-content: center;
        overflow-x: visible;
        padding-left: 0;
    }
}

.plan-card {
    background: white;
    border-radius: var(--radius);
    padding: 2rem;
    min-width: 300px;
    /* Fixed width for scrolling */
    flex: 0 0 320px;
    scroll-snap-align: center;
    box-shadow: var(--shadow);
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    color: var(--text-color);
}

.card-badge {
    position: absolute;
    top: 0;
    left: 0;
    background-color: var(--warning);
    padding: 0.25rem 1rem;
    border-bottom-right-radius: var(--radius);
    font-weight: 700;
    font-size: 0.8rem;
    text-transform: uppercase;
}

.card-header {
    text-align: center;
    margin-bottom: 1.5rem;
    padding-top: 1.5rem;
}

.plan-speed {
    color: var(--danger);
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.price-value {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1;
}

.price-value small {
    font-size: 1rem;
    color: var(--primary-color);
}

.price-old {
    color: var(--secondary-color);
    font-size: 0.9rem;
    text-decoration: line-through;
    margin: 0.5rem 0;
}

.badge-off {
    background-color: #d1e7dd;
    color: var(--success);
    padding: 0.1rem 0.4rem;
    border-radius: 0.25rem;
    font-size: 0.8em;
    text-decoration: none;
    margin-left: 0.5rem;
}

.price-condition {
    display: inline-block;
    background-color: #fff3cd;
    padding: 0.25rem 1rem;
    border-radius: 1rem;
    font-size: 0.9rem;
    font-weight: 600;
}

.plan-features li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    font-size: 0.95rem;
}

.plan-apps {
    margin: 1.5rem 0;
    text-align: center;
}

.apps-label {
    color: var(--danger);
    font-weight: 700;
    font-size: 0.8rem;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
}

.apps-icons {
    display: grid;
    grid-template-columns: repeat(3, auto);
    justify-content: center;
    gap: 0.5rem;
}

.apps-icons img {
    background: white;
    padding: 4px;
    border-radius: 4px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    width: 32px;
    height: 32px;
    object-fit: contain;
}

.app-more {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--warning);
    color: var(--warning);
    border-radius: 4px;
    font-weight: 700;
    font-size: 0.8rem;
}

.plan-actions {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

/* Advantages */
.advantages {
    padding: 4rem 0;
    background-color: white;
}

.section-title {
    text-align: center;
    color: var(--primary-color);
    font-size: 1.75rem;
    margin-bottom: 3rem;
}

.grid-advantages {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.advantage-card {
    text-align: center;
    padding: 2rem;
    border-radius: 1rem;
    background: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

.advantage-card:hover {
    transform: translateY(-5px);
}

.icon-circle {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-circle .material-symbols-outlined {
    font-size: 40px;
}

.icon-wifi {
    background: linear-gradient(135deg, #fef3c7, #fde68a);
    color: #d97706;
}

.icon-verified {
    background: linear-gradient(135deg, #dbeafe, #bfdbfe);
    color: #0d6efd;
}

.icon-phone {
    background: linear-gradient(135deg, #dcfce7, #bbf7d0);
    color: #198754;
}

.icon-unlimited {
    background: linear-gradient(135deg, #ede9fe, #ddd6fe);
    color: #6f42c1;
}

.advantage-card h4 {
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.advantage-card p {
    color: var(--secondary-color);
    font-size: 0.9rem;
}

/* FAQ */
.faq {
    padding: 4rem 0;
    background-color: var(--light-bg);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

details {
    background: white;
    border-radius: 0.5rem;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

summary {
    padding: 1.25rem;
    cursor: pointer;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
    list-style: none;
    /* Hide default triangle */
}

summary::-webkit-details-marker {
    display: none;
}

.arrow::after {
    content: '+';
    font-size: 1.5rem;
    font-weight: 300;
}

details[open] .arrow::after {
    content: '-';
}

details p {
    padding: 0 1.25rem 1.25rem;
    color: var(--secondary-color);
    border-top: 1px solid #f0f0f0;
    margin-top: 0;
    padding-top: 1rem;
}

/* Footer */
footer {
    background: linear-gradient(to right, var(--primary-dark), var(--primary-color));
    color: white;
    padding: 3rem 0;
    margin-top: 2rem;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
    text-align: center;
    padding-bottom: 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-left img {
    margin: 0 auto;
}

@media (min-width: 768px) {
    .footer-content {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
}

.footer-right h5 {
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.footer-right .phone {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.footer-right .hours {
    font-size: 0.85rem;
    opacity: 0.8;
}

.footer-bottom {
    text-align: center;
    margin-top: 2rem;
    font-size: 0.8rem;
    opacity: 0.7;
}

/* Floating WhatsApp Button */
.whatsapp-float {
    position: fixed;
    bottom: 25px;
    right: 25px;
    background-color: var(--whatsapp-green);
    color: #fff;
    width: 68px;
    height: 68px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    animation: pulse 2s infinite;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.25);
    animation: none;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7);
    }

    70% {
        box-shadow: 0 0 0 15px rgba(37, 211, 102, 0);
    }

    100% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
    }
}



/* Animations */
.fade-in-section {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
    will-change: opacity, transform;
}

.fade-in-section.visible {
    opacity: 1;
    transform: translateY(0);
}

/* New Solution Choice Modal */
.modal-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.7);
    display: none;
    /* hidden by default */
    align-items: center;
    justify-content: center;
    padding: 1rem;
    z-index: 9999;
}

.modal-overlay.active {
    display: flex;
}

.modal-content {
    width: 100%;
    max-width: 42rem;
    /* approx 2xl */
    background-color: white;
    color: #0f172a;
    /* slate-900 */
    border-radius: 1rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    overflow: hidden;
    animation: modalFadeIn 0.2s ease-out;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

.modal-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid #e2e8f0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    font-size: 1.125rem;
    font-weight: 600;
    margin: 0;
}

.close-btn {
    background: none;
    border: none;
    font-weight: 700;
    font-size: 1.25rem;
    cursor: pointer;
    color: inherit;
    padding: 0.5rem;
}

.modal-body {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.modal-option {
    width: 100%;
    text-align: left;
    border: 1px solid #e2e8f0;
    border-radius: 0.75rem;
    padding: 1.25rem;
    background: white;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.modal-option:hover {
    background-color: #f8fafc;
    border-color: var(--primary-color);
}

.option-icon {
    font-size: 2.5rem !important;
    color: #0f172a;
}

.modal-option strong {
    display: block;
    margin-bottom: 0.25rem;
    font-size: 1.1rem;
    color: #0f172a;
}

.modal-option .small-text {
    font-size: 0.875rem;
    color: #475569;
    /* slate-600 */
}

/* Ensure buttons look clickable */
button.whatsapp-float,
button.open-modal-btn {
    cursor: pointer;
    border: none;
}

button.whatsapp-float {
    background-color: var(--whatsapp-green);
    /* Ensure color stays */
    padding: 0;
}

/* Content Pages */
.page-content {
    padding: 4rem 0;
    min-height: 60vh;
}

.content-block {
    background: white;
    padding: 3rem !important;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    line-height: 1.8;
    max-width: 900px;
    margin: 0 auto;
}

.content-block h2 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-size: 2rem;
}

.content-block p {
    margin-bottom: 1rem;
    color: #444;
}