/* 
  MODERN TELECOM DESIGN SYSTEM
  Aesthetic: Sleek, Professional, Uniform
  Palette: Trust-inspiring Blues, Crisp Whites, Slate text
*/

:root {
    /* Colors */
    --primary: #007bff;
    /* Professional Tech Blue */
    --primary-dark: #0069d9;
    --secondary: #e7f1ff;
    --accent: #10B981;
    --bg: #F8FAFC;
    --bg-soft: #F1F5F9;
    --white: #FFFFFF;
    --charcoal: #0F172A;
    --graphite: #475569;

    /* Depth & Softness */
    --shadow-sm: 0 2px 4px rgba(15, 23, 42, 0.03);
    --shadow-md: 0 10px 30px rgba(0, 123, 255, 0.06);
    --shadow-lg: 0 20px 50px rgba(15, 23, 42, 0.06);
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;

    /* Typography Scale */
    --font-h1: clamp(2.5rem, 5vw, 4rem);
    --font-h2: clamp(2rem, 4vw, 3rem);
    --font-body: 1.125rem;

    /* Spacing */
    --space-unit: 1rem;
    --container-max: 1200px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: 'Montserrat', sans-serif;
    background-color: var(--bg);
    color: var(--charcoal);
    line-height: 1.6;
    overflow-x: hidden;
    padding-top: 80px;
}

h1,
h2,
h3,
.heading-modern {
    font-family: 'Poppins', sans-serif;
    font-weight: 700;
    color: var(--charcoal);
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    /* vertical padding, horizontal handled by container-inner */
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 0, 0, 0.03);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
}

.navbar::after {
    content: "";
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.05), transparent);
    pointer-events: none;
}

.logo {
    font-family: 'Poppins', sans-serif;
    font-weight: 700;
    font-size: 1.5rem;
    letter-spacing: -1px;
}

.logo span {
    color: var(--primary);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--graphite);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: var(--primary);
}

.nav-links a.active,
.nav-cta a.active {
    color: #1e90ff !important;
    font-weight: 600;
}

.nav-cta {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.hamburger {
    display: none;
    cursor: pointer;
    flex-direction: column;
    gap: 5px;
    z-index: 100;
}

.hamburger .bar {
    width: 25px;
    height: 3px;
    background-color: var(--charcoal);
    border-radius: 3px;
    transition: all 0.3s ease;
}

.hamburger.active .bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.hamburger.active .bar:nth-child(2) {
    opacity: 0;
}

.hamburger.active .bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* Call Page Layout */
.call-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 3rem;
    gap: 2rem;
}

.credit-display-card {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    background: rgba(0, 0, 0, 0.03);
    padding: 1rem 1.5rem;
    border-radius: 12px;
    border: 1px solid rgba(0, 0, 0, 0.05);
    text-align: right;
    white-space: nowrap;
}

.call-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem;
}

@media (max-width: 768px) {
    .call-header {
        flex-direction: column;
        align-items: flex-start;
        text-align: left;
    }

    .credit-display-card {
        width: 100%;
        justify-content: space-between;
        text-align: left;
    }

    .call-grid {
        grid-template-columns: 1fr;
    }
}

/* Glassmorphism & Depth Utilities */
.glass-card {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.6);
    box-shadow: var(--shadow-md);
    border-radius: var(--radius-md);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    padding: 2.5rem;
}

.glass-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.soft-card {
    background: var(--white);
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.soft-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 25px 50px rgba(15, 23, 42, 0.08);
}

/* Toast Notifications */
.toast {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    transform: translateY(100px);
    padding: 1.5rem 2rem;
    border-radius: 0;
    font-weight: 500;
    font-size: 1.1rem;
    z-index: 9999;
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 -10px 40px rgba(0, 0, 0, 0.1);
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1);
    text-align: center;
}

.toast.animate-fade-up {
    transform: translateY(0);
    opacity: 1;
}

.toast-success {
    border-top: 4px solid var(--primary);
    color: var(--charcoal);
}

.toast-error {
    border-top: 4px solid #e53e3e;
    color: #e53e3e;
}

.toast-warning {
    border-top: 4px solid #f6ad55;
    color: var(--charcoal);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2.5rem;
    border-radius: 100px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    font-family: 'Poppins', sans-serif;
}

.btn-primary {
    background-color: var(--primary);
    color: var(--white) !important;
    box-shadow: 0 4px 15px rgba(0, 123, 255, 0.3);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: scale(1.02);
    box-shadow: 0 6px 20px rgba(29, 78, 216, 0.4);
}

.btn-secondary {
    background-color: transparent;
    color: var(--charcoal);
    border: 1px solid rgba(0, 0, 0, 0.1);
}

.btn-secondary:hover {
    background-color: rgba(0, 0, 0, 0.02);
    border-color: rgba(0, 0, 0, 0.2);
}

/* Hero Section */
.hero-section {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    align-items: center;
    padding: 8rem 2rem;
    gap: 4rem;
}

.hero-content {
    max-width: 600px;
}

.badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--bg-soft);
    border: 1px solid rgba(0, 123, 255, 0.1);
    color: var(--primary);
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: 100px;
    margin-bottom: 2rem;
    text-transform: uppercase;
    letter-spacing: 0.1rem;
}

.hero-content h1 {
    font-size: var(--font-h1);
    margin-bottom: 1.5rem;
}

.hero-content h1 span {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    position: relative;
    display: inline-block;
}

.hero-content p {
    font-size: 1.25rem;
    color: var(--graphite);
    margin-bottom: 3rem;
}

.hero-actions {
    display: flex;
    gap: 1.5rem;
}

/* Hero Visuals */
.hero-visual {
    position: relative;
    height: 500px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.luxury-blob {
    position: absolute;
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    filter: blur(80px);
    opacity: 0.25;
    border-radius: 50%;
    animation: float 10s infinite alternate ease-in-out;
}

.glass-orb {
    width: 280px;
    height: 280px;
    background: rgba(255, 255, 255, 0.4);
    backdrop-filter: blur(25px);
    border: 1px solid rgba(255, 255, 255, 0.6);
    border-radius: 50%;
    box-shadow: var(--shadow-lg);
    position: relative;
    z-index: 1;
}

@keyframes float {
    from {
        transform: translate(0, 0) scale(1);
    }

    to {
        transform: translate(30px, -40px) scale(1.1);
    }
}

/* Social Proof */
.social-proof {
    text-align: center;
    padding: 4rem 2rem;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.social-proof p {
    font-size: 0.9rem;
    color: var(--graphite);
    margin-bottom: 2rem;
    text-transform: uppercase;
    letter-spacing: 0.1rem;
}

.logo-grid {
    display: flex;
    justify-content: center;
    gap: 5rem;
    opacity: 0.4;
    filter: grayscale(1);
}

.client-logo {
    font-family: 'Poppins', sans-serif;
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: 0.2rem;
}

/* Features */
.features-section {
    padding: 10rem 2rem;
}

.section-header {
    text-align: center;
    margin-bottom: 6rem;
}

.section-header h2 {
    font-size: var(--font-h2);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
}

.icon-wrap {
    width: 60px;
    height: 60px;
    background: var(--bg);
    border: 1px solid rgba(0, 123, 255, 0.1);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 2rem;
    font-family: 'Poppins', sans-serif;
    font-weight: 700;
    color: var(--primary);
    font-size: 1.25rem;
}

.features-grid h3 {
    margin-bottom: 1rem;
}

/* Final CTA */
.final-cta {
    padding-bottom: 10rem;
}

.cta-card {
    background: linear-gradient(135deg, var(--charcoal), #1a1a1a);
    border-radius: var(--radius-lg);
    padding: 6rem;
    text-align: center;
    color: var(--white);
}

.cta-card h2 {
    color: var(--white);
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.cta-card p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 1.25rem;
    margin-bottom: 3rem;
}

/* Footer */
footer {
    padding: 4rem 2rem;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

.footer-wrap {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-brand {
    font-family: 'Poppins', sans-serif;
    font-weight: 700;
    font-size: 1.25rem;
}

.footer-brand span {
    color: var(--primary);
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    text-decoration: none;
    color: var(--graphite);
    font-size: 0.9rem;
}

.footer-copyright {
    color: var(--graphite);
    font-size: 0.9rem;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-up {
    animation: fadeInUp 0.8s ease-out forwards;
}

/* Use Cases */
.use-cases-section {
    padding-bottom: 10rem;
}

.use-case-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.use-case-item {
    padding: 3rem;
    border-radius: var(--radius-lg);
}

.use-case-item h4 {
    font-family: 'Poppins', sans-serif;
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--primary);
}

/* Pricing */
.pricing-section {
    padding-bottom: 15rem;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
}

.pricing-card {
    background: var(--white);
    padding: 4rem 3rem;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(15, 23, 42, 0.06);
    text-align: center;
    position: relative;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.pricing-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.pricing-card.featured {
    border: 2px solid var(--primary);
    box-shadow: var(--shadow-lg);
    transform: scale(1.05);
}

.pricing-card.featured:hover {
    transform: scale(1.05) translateY(-4px);
    box-shadow: 0 30px 60px rgba(0, 123, 255, 0.12);
}

.pricing-card .tag {
    position: absolute;
    top: 1.5rem;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: var(--charcoal);
    padding: 0.25rem 1rem;
    border-radius: 100px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
}

.pricing-card h4 {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    color: var(--graphite);
}

.pricing-card .price {
    font-size: 3rem;
    font-weight: 700;
    font-family: 'Poppins', sans-serif;
    margin-bottom: 2rem;
    color: var(--charcoal);
}

.pricing-card .price span {
    font-size: 1.25rem;
    color: var(--graphite);
    font-weight: 400;
}

.pricing-card ul {
    list-style: none;
    margin-bottom: 3rem;
    text-align: left;
}

.pricing-card ul li {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
    position: relative;
    font-size: 0.95rem;
    color: var(--graphite);
}

.pricing-card ul li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary);
}

/* Responsive */
@media (max-width: 1024px) {
    .hero-section {
        grid-template-columns: 1fr;
        text-align: center;
        padding: 4rem 2rem;
    }

    .hero-content {
        margin: 0 auto;
    }

    .hero-actions {
        justify-content: center;
        flex-direction: column;
        width: 100%;
    }

    .hero-actions .btn {
        width: 100%;
        justify-content: center;
    }

    .features-grid,
    .use-case-grid,
    .pricing-grid {
        grid-template-columns: 1fr !important;
        gap: 2.5rem;
    }

    .social-proof .logo-grid {
        flex-wrap: wrap;
        gap: 3rem;
        justify-content: center;
    }

    .footer-wrap {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }

    .footer-links {
        justify-content: center;
    }

    .hamburger {
        display: flex;
    }

    .nav-links {
        position: fixed;
        inset: 0;
        right: -100%;
        left: unset;
        width: 100%;
        height: 100vh;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(15px);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 2rem;
        transition: right 0.4s ease;
        z-index: 50;
    }

    .nav-menu.active .nav-links {
        right: 0;
    }

    .nav-links a,
    .nav-links button,
    .nav-links .btn {
        font-size: 1.5rem !important;
        width: auto;
        display: inline-block;
        text-align: center;
    }

    .container {
        padding: 0 1.5rem;
    }

    .hero-section {
        padding: 4rem 1rem;
    }

    /* Stack flex-row elements */
    .flex-row-mobile-stack {
        flex-direction: column !important;
        gap: 1rem !important;
    }

    .flex-row-mobile-stack>*,
    div[style*="display: flex; gap: 0.5rem;"]>* {
        width: 100% !important;
    }

    div[style*="display: flex; gap: 0.5rem;"] {
        flex-direction: column !important;
        gap: 1rem !important;
    }

    .cta-card {
        padding: 3rem;
    }

    .cta-card h2 {
        font-size: 2rem;
    }

    .nav-cta {
        display: none !important;
    }

    .mobile-only-auth {
        display: flex !important;
    }
}

/* Use Cases */
.use-cases-section {
    padding-bottom: 10rem;
}

.use-case-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.use-case-item {
    padding: 3rem;
    border-radius: var(--radius-lg);
}

.use-case-item h4 {
    font-family: 'Poppins', sans-serif;
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--primary);
}

/* Auth & Toast */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    padding: 1.5rem 2rem;
    z-index: 1000;
    font-weight: 500;
    color: var(--charcoal);
    border-left: 4px solid var(--primary);
}

.toast-error {
    border-left-color: #ff4757;
}

.auth-trigger {
    font-size: 0.85rem !important;
    padding: 0.8rem 1.5rem !important;
    text-decoration: none;
    color: var(--primary);
    font-weight: 600;
    transition: opacity 0.3s;
}

.auth-trigger:hover {
    opacity: 0.7;
}

.user-info {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary);
    margin-right: 1rem;
}

.hero-auth-options {
    margin-top: 2rem;
    display: flex;
    gap: 1rem;
    align-items: center;
}

.hero-auth-options span {
    font-size: 0.8rem;
    color: var(--graphite);
    text-transform: uppercase;
    letter-spacing: 0.1rem;
}

.btn-sm {
    padding: 0.5rem 1rem !important;
    font-size: 0.8rem !important;
}

/* Auth Modal Styles */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
    display: none;
    /* hidden by default */
    justify-content: center;
    align-items: center;
    z-index: 2000;
}

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

.modal-content {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 3rem 2.5rem;
    max-width: 440px;
    width: 90%;
    position: relative;
    text-align: center;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    font-family: 'Montserrat', sans-serif;
}

.modal-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--graphite);
    transition: color 0.3s;
}

.modal-close:hover {
    color: var(--charcoal);
}

.modal-title {
    font-family: 'Poppins', sans-serif;
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    color: var(--charcoal);
}

.modal-subtitle {
    font-size: 0.95rem;
    color: var(--graphite);
    margin-bottom: 2rem;
    line-height: 1.5;
}

.modal-buttons {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.btn-outline {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
    background: var(--white);
    border: 1px solid rgba(0, 0, 0, 0.15);
    padding: 0.8rem;
    border-radius: 100px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s, border-color 0.2s;
    font-family: 'Montserrat', sans-serif;
    font-size: 0.95rem;
    color: var(--charcoal);
}

.btn-outline:hover {
    background: #f9f9f9;
    border-color: rgba(0, 0, 0, 0.3);
}

.btn-outline svg {
    flex-shrink: 0;
}

.modal-divider {
    display: flex;
    align-items: center;
    margin: 1.5rem 0;
    color: var(--graphite);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 500;
}

.modal-divider::before,
.modal-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: rgba(0, 0, 0, 0.1);
}

.modal-divider span {
    padding: 0 1rem;
}

#email-login-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.input-field,
.modal-input {
    width: 100%;
    padding: 1rem 1.2rem;
    border: 1px solid rgba(15, 23, 42, 0.15);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    outline: none;
    background: var(--white);
    transition: all 0.3s ease;
    font-family: 'Montserrat', sans-serif;
}

.modal-input {
    border-radius: 100px;
}

.input-field:focus,
.modal-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.15);
}

.btn-black {
    width: 100%;
    padding: 1rem;
    background: #111;
    color: #fff !important;
    border: none;
    border-radius: 100px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
    font-family: 'Poppins', sans-serif;
    font-size: 1rem;
}

.btn-black:hover {
    background: #333;
}

/* Responsive Table Styles */
.table-responsive {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

@media (max-width: 640px) {
    .responsive-card-table thead {
        display: none;
    }

    .responsive-card-table tbody tr {
        display: block;
        margin-bottom: 1.5rem;
        padding: 1.5rem;
        background: rgba(255, 255, 255, 0.4);
        border: 1px solid rgba(0, 0, 0, 0.05);
        border-radius: 12px;
    }

    .responsive-card-table td {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 0.75rem 0 !important;
        border: none !important;
        text-align: right;
    }

    .responsive-card-table td::before {
        content: attr(data-label);
        font-weight: 600;
        text-align: left;
    }
}