/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-blue: #0066cc;
    --dark-blue: #004080;
    --light-blue: #3399ff;
    --accent-blue: #0080ff;
    --white: #ffffff;
    --light-gray: #f5f7fa;
    --gray: #e0e6ed;
    --dark-gray: #4a5568;
    --text-color: #2d3748;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background-color: var(--primary-blue);
    color: var(--white);
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.2rem;
}

.logo-img {
    height: 60px;
    width: auto;
    margin-bottom: 0.2rem;
    display: block;
}

.tagline {
    font-size: 0.9rem;
    opacity: 0.9;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

nav a {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.3s;
}

nav a:hover {
    opacity: 0.8;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--dark-blue) 100%);
    color: var(--white);
    padding: 5rem 0;
    text-align: center;
}

.hero-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    opacity: 0.95;
}

.hero-features {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}

.feature-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background-color: rgba(255, 255, 255, 0.15);
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    font-weight: 500;
}

.feature-badge svg {
    width: 24px;
    height: 24px;
}

.cta-button {
    display: inline-block;
    background-color: var(--white);
    color: var(--primary-blue);
    padding: 1rem 2.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: transform 0.3s, box-shadow 0.3s;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

/* Local Support Banner */
.local-banner {
    background-color: var(--light-blue);
    color: var(--white);
    padding: 2rem 0;
    text-align: center;
}

.local-banner h3 {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}

.local-banner p {
    font-size: 1.1rem;
    opacity: 0.95;
}

/* Plans Section */
.plans-section {
    padding: 5rem 0;
    background-color: var(--light-gray);
}

.plans-section h2 {
    text-align: center;
    font-size: 2.5rem;
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: var(--dark-gray);
    margin-bottom: 3rem;
}

/* SLA Banner */
.sla-banner {
    background: linear-gradient(135deg, rgba(0, 102, 204, 0.1) 0%, rgba(0, 128, 255, 0.15) 100%);
    border: 2px solid var(--light-blue);
    border-radius: 15px;
    padding: 2rem;
    margin-bottom: 3rem;
    text-align: center;
}

.sla-banner h3 {
    color: var(--primary-blue);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.sla-banner p {
    color: var(--text-color);
    font-size: 1.05rem;
    line-height: 1.8;
    max-width: 900px;
    margin: 0 auto;
}

/* Network Security Section */
.network-security {
    max-width: 1000px;
    margin: 0 auto 3rem;
}

.security-expandable {
    background: var(--light-gray);
    border: 2px solid var(--gray);
    border-radius: 15px;
    padding: 0;
    overflow: hidden;
    cursor: pointer;
}

.security-expandable summary {
    padding: 1.5rem 2rem;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-blue);
    text-align: center;
    list-style: none;
    cursor: pointer;
    user-select: none;
    transition: background-color 0.3s, color 0.3s;
    animation: pulse 2s ease-in-out infinite;
}

.security-expandable summary::-webkit-details-marker {
    display: none;
}

.security-expandable summary:hover {
    background-color: rgba(0, 102, 204, 0.05);
}

.security-expandable[open] summary {
    background-color: var(--primary-blue);
    color: var(--white);
    border-bottom: 2px solid var(--dark-blue);
    animation: none;
}

.security-content {
    padding: 2.5rem;
    animation: fadeIn 0.4s ease-out;
}

.security-content h4 {
    color: var(--primary-blue);
    font-size: 1.75rem;
    margin-bottom: 1rem;
    text-align: center;
}

.security-intro {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--text-color);
    text-align: center;
    margin-bottom: 2rem;
    padding: 0 1rem;
}

.security-features {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.security-feature {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.security-feature h5 {
    color: var(--primary-blue);
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.security-feature p {
    color: var(--text-color);
    line-height: 1.7;
    margin-bottom: 0.5rem;
}

.security-feature strong {
    color: var(--dark-blue);
}

.security-benefits {
    list-style: none;
    margin-top: 1rem;
}

.security-benefits li {
    padding: 0.75rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-color);
    line-height: 1.6;
    border-bottom: 1px solid var(--gray);
}

.security-benefits li:last-child {
    border-bottom: none;
}

.security-benefits li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--primary-blue);
    font-weight: bold;
}

.security-cta {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--dark-blue) 100%);
    color: var(--white);
    padding: 1.5rem;
    border-radius: 10px;
    text-align: center;
}

.security-cta p {
    color: var(--white);
    font-size: 1.05rem;
    line-height: 1.7;
    margin: 0;
}

.plans-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.plan-card {
    background: var(--white);
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s, box-shadow 0.3s;
    position: relative;
    border: 2px solid transparent;
}

.plan-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 102, 204, 0.15);
    border-color: var(--light-blue);
}

.plan-card.featured {
    border-color: var(--primary-blue);
    box-shadow: 0 6px 20px rgba(0, 102, 204, 0.2);
}

.popular-badge {
    position: absolute;
    top: -12px;
    right: 20px;
    background: linear-gradient(135deg, var(--accent-blue), var(--primary-blue));
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.plan-header h3 {
    font-size: 1.5rem;
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
}

.plan-speed {
    color: var(--dark-gray);
    font-size: 1rem;
    margin-bottom: 1.5rem;
}

.plan-price {
    display: flex;
    align-items: baseline;
    margin-bottom: 1.5rem;
    color: var(--primary-blue);
}

.plan-price .currency {
    font-size: 1.5rem;
    font-weight: 600;
}

.plan-price .amount {
    font-size: 3rem;
    font-weight: 700;
    margin: 0 0.25rem;
}

.plan-price .period {
    font-size: 1.1rem;
    color: var(--dark-gray);
}

.plan-features {
    list-style: none;
}

.plan-features li {
    padding: 0.5rem 0;
    color: var(--text-color);
    border-bottom: 1px solid var(--gray);
}

.plan-features li:last-child {
    border-bottom: none;
}

/* VoIP Section */
.voip-section {
    padding: 5rem 0;
    background-color: var(--white);
}

.voip-section h2 {
    text-align: center;
    font-size: 2.5rem;
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

/* VoIP Benefits Section */
.voip-benefits {
    max-width: 1000px;
    margin: 2rem auto 3rem;
}

.benefits-intro {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-color);
    text-align: center;
    margin-bottom: 2rem;
    padding: 0 1rem;
}

.features-expandable {
    background: var(--light-gray);
    border: 2px solid var(--gray);
    border-radius: 15px;
    padding: 0;
    overflow: hidden;
    cursor: pointer;
}

.features-expandable summary {
    padding: 1.5rem 2rem;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-blue);
    text-align: center;
    list-style: none;
    cursor: pointer;
    user-select: none;
    transition: background-color 0.3s, color 0.3s;
    animation: pulse 2s ease-in-out infinite;
}

.features-expandable summary::-webkit-details-marker {
    display: none;
}

.features-expandable summary:hover {
    background-color: rgba(0, 102, 204, 0.05);
}

.features-expandable[open] summary {
    background-color: var(--primary-blue);
    color: var(--white);
    border-bottom: 2px solid var(--dark-blue);
    animation: none;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    padding: 2rem;
    animation: fadeIn 0.4s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(0, 102, 204, 0.5);
        background-color: rgba(0, 102, 204, 0.05);
    }
    50% {
        box-shadow: 0 0 15px 10px rgba(0, 102, 204, 0);
        background-color: rgba(0, 102, 204, 0.15);
    }
}

.feature-item {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 15px rgba(0, 102, 204, 0.15);
}

.feature-item h4 {
    color: var(--primary-blue);
    font-size: 1.15rem;
    margin-bottom: 0.75rem;
}

.feature-item p {
    color: var(--text-color);
    line-height: 1.6;
    font-size: 0.95rem;
}

.voip-logos {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 4rem;
    margin: 2rem 0 3rem;
    padding: 2rem;
    background: var(--light-gray);
    border-radius: 15px;
}

.logo-item {
    display: flex;
    align-items: center;
    justify-content: center;
}

.partner-logo {
    max-width: 150px;
    height: auto;
    filter: grayscale(20%);
    transition: filter 0.3s, transform 0.3s;
}

.partner-logo:hover {
    filter: grayscale(0%);
    transform: scale(1.05);
}

.voip-content {
    display: block;
    max-width: 900px;
    margin: 3rem auto 0;
}

/* VoIP Calculator */
.voip-calculator {
    background: var(--light-gray);
    border-radius: 15px;
    padding: 2.5rem;
    border: 2px solid var(--gray);
}

.voip-calculator h3 {
    font-size: 2rem;
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
    text-align: center;
}

.calculator-intro {
    text-align: center;
    color: var(--dark-gray);
    margin-bottom: 1rem;
}

.calculator-features {
    text-align: center;
    color: var(--primary-blue);
    font-weight: 500;
    margin-bottom: 2rem;
    font-size: 1.05rem;
}

.calculator-form {
    background: var(--white);
    border-radius: 10px;
    padding: 2rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.calc-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    border-bottom: 1px solid var(--gray);
}

.calc-row label {
    font-weight: 500;
    color: var(--text-color);
    flex: 1;
}

.calc-value {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-blue);
}

.calc-input {
    width: 80px;
    padding: 0.5rem;
    border: 2px solid var(--gray);
    border-radius: 8px;
    font-size: 1rem;
    text-align: center;
    transition: border-color 0.3s;
}

.calc-input:focus {
    outline: none;
    border-color: var(--primary-blue);
}

.calc-input:disabled {
    background-color: var(--light-gray);
    cursor: not-allowed;
}

.calc-section {
    margin: 1.5rem 0;
    padding: 1.5rem;
    background: var(--light-gray);
    border-radius: 10px;
}

.calc-section-title {
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.calc-radio-group {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding: 1rem;
    background: var(--white);
    border-radius: 8px;
}

.calc-radio-group:last-child {
    margin-bottom: 0;
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    flex: 1;
}

.radio-label input[type="radio"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.calc-sub-input {
    margin-left: 1rem;
}

/* Inline Call Rates */
.call-rates-inline {
    margin-top: 1rem;
    padding: 1.5rem;
    background: var(--white);
    border-radius: 8px;
    border: 2px solid var(--primary-blue);
    display: block;
}

.call-rates-inline.hidden {
    display: none;
}

.call-rates-inline h4 {
    font-size: 1.1rem;
    color: var(--primary-blue);
    margin-bottom: 1rem;
    text-align: center;
}

.rates-inline-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.75rem;
}

.rate-inline-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    background: var(--light-gray);
    border-radius: 6px;
}

.rate-inline-item .rate-type {
    font-weight: 500;
    color: var(--text-color);
}

.rate-inline-item .rate-price {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary-blue);
}

.calc-total {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    margin-top: 1.5rem;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--dark-blue) 100%);
    color: var(--white);
    border-radius: 10px;
}

.total-label {
    font-size: 1.25rem;
    font-weight: 600;
}

.total-amount {
    font-size: 2rem;
    font-weight: 700;
}

.rates-note {
    margin-top: 1.5rem;
    text-align: center;
    font-style: italic;
    color: var(--dark-gray);
}

.call-rates {
    background: var(--light-gray);
    border-radius: 15px;
    padding: 2.5rem;
    border: 2px solid var(--gray);
    display: none;
}

.call-rates h3 {
    font-size: 2rem;
    color: var(--primary-blue);
    margin-bottom: 2rem;
    text-align: center;
}

.rates-table {
    background: var(--white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.rate-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--gray);
}

.rate-row:last-child {
    border-bottom: none;
}

.rate-type {
    font-weight: 500;
    color: var(--text-color);
}

.rate-price {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-blue);
}

.rates-note {
    margin-top: 1.5rem;
    text-align: center;
    font-style: italic;
    color: var(--dark-gray);
}

/* Contact Section */
.contact-section {
    padding: 5rem 0;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--dark-blue) 100%);
    color: var(--white);
}

.contact-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.contact-section .section-subtitle {
    color: var(--white);
    opacity: 0.95;
}

.contact-content {
    margin-top: 3rem;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.contact-item {
    display: flex;
    gap: 1.5rem;
    background-color: rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 15px;
    backdrop-filter: blur(10px);
}

.contact-link {
    text-decoration: none;
    color: var(--white);
    transition: transform 0.3s, background-color 0.3s;
    cursor: pointer;
}

.contact-link:hover {
    transform: translateY(-5px);
    background-color: rgba(255, 255, 255, 0.2);
}

.contact-item svg {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
}

.contact-item h4 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.contact-item p {
    opacity: 0.95;
    line-height: 1.6;
}

/* Footer */
footer {
    background-color: #1a202c;
    color: var(--white);
    padding: 3rem 0 1rem;
}

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

.footer-brand h3 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
    color: var(--light-blue);
}

.footer-brand p {
    opacity: 0.8;
    line-height: 1.6;
}

.footer-links h4,
.footer-contact h4 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--light-blue);
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: var(--white);
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.3s;
}

.footer-links a:hover {
    opacity: 1;
}

.footer-contact p {
    opacity: 0.8;
    line-height: 1.8;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
    text-align: center;
}

.footer-bottom p {
    opacity: 0.8;
    margin-bottom: 0.5rem;
}

.fine-print {
    font-size: 0.85rem;
    opacity: 0.6;
    font-style: italic;
}

/* Responsive Design */
@media (max-width: 768px) {
    header .container {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }

    nav ul {
        gap: 1rem;
    }

    .hero-content h2 {
        font-size: 1.75rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-features {
        flex-direction: column;
        gap: 1rem;
    }

    .plans-section h2,
    .voip-section h2,
    .contact-section h2 {
        font-size: 2rem;
    }

    .contact-info {
        grid-template-columns: 1fr;
    }
    
    .voip-logos {
        flex-direction: column;
        gap: 2rem;
    }
    
    .security-expandable summary {
        padding: 1rem 1.5rem;
        font-size: 1.1rem;
    }
    
    .security-content {
        padding: 1.5rem;
    }
    
    .security-intro {
        font-size: 1rem;
        padding: 0 0.5rem;
    }
    
    .security-feature {
        padding: 1rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        padding: 1.5rem;
    }
    
    .features-expandable summary {
        padding: 1rem 1.5rem;
        font-size: 1.1rem;
    }
    
    .calc-row {
        flex-direction: column;
        align-items: center;
        gap: 0.5rem;
    }
    
    .calc-radio-group {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }
}

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

    .hero {
        padding: 3rem 0;
    }
    
    .benefits-intro {
        font-size: 1rem;
        padding: 0 0.5rem;
    }
    
    .security-intro {
        font-size: 0.95rem;
    }
    
    .security-content h4 {
        font-size: 1.4rem;
    }
    
    .security-feature h5 {
        font-size: 1.1rem;
    }
    
    .feature-item {
        padding: 1rem;
    }

    .plan-card,
    .voip-calculator {
        padding: 1.5rem;
    }

    .plans-grid {
        grid-template-columns: 1fr;
    }
    
    .calculator-form {
        text-align: center;
    }
    
    .calc-row {
        justify-content: center;
        text-align: center;
    }
    
    .calc-row label {
        text-align: center;
    }
    
    .calc-input {
        margin: 0 auto;
    }
    
    .calc-radio-group {
        justify-content: center;
        text-align: center;
    }
    
    .radio-label {
        justify-content: center;
    }
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.plan-card,
.voip-calculator,
.contact-item {
    animation: fadeInUp 0.6s ease-out;
}