/* ===================================
   BahrainCell - Cellular Technology Website
   Color Scheme:
   - Frequency Blue: #0066CC
   - Signal Green: #00CC66
   - Hardware Gray: #474747
   - Interface White: #F5F5F5
   - Accent Purple: #8A2BE2
   =================================== */

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

:root {
    --color-primary: #0066CC;
    --color-secondary: #00CC66;
    --color-gray: #474747;
    --color-light: #F5F5F5;
    --color-accent: #8A2BE2;
    --color-white: #ffffff;
    --color-black: #000000;
    
    --font-technical: 'JetBrains Mono', monospace;
    --font-readable: 'Exo 2', sans-serif;
    
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-readable);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-gray);
    background-color: var(--color-white);
    overflow-x: hidden;
}

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

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-readable);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-gray);
}

h1 { font-size: 3rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 2rem; }
h4 { font-size: 1.5rem; }

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

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

/* Cookie Banner */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, var(--color-gray), var(--color-primary));
    color: var(--color-white);
    padding: 20px;
    z-index: 10000;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.2);
    transform: translateY(100%);
    transition: transform 0.4s ease;
}

.cookie-banner.show {
    transform: translateY(0);
}

.cookie-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    flex-wrap: wrap;
}

.cookie-content p {
    flex: 1;
    margin: 0;
    min-width: 300px;
}

.cookie-buttons {
    display: flex;
    gap: 10px;
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--color-white);
    font-family: var(--font-technical);
    font-size: 1.5rem;
    font-weight: 700;
}

.logo img {
    width: 40px;
    height: 40px;
}

.logo:hover {
    opacity: 0.9;
}

.nav ul {
    display: flex;
    list-style: none;
    gap: 30px;
    align-items: center;
}

.nav a {
    color: var(--color-white);
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 5px;
    transition: var(--transition);
}

.nav a:hover,
.nav a.active {
    background: rgba(255, 255, 255, 0.2);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--color-white);
    border-radius: 2px;
    transition: var(--transition);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* Hero Section */
.hero {
    position: relative;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: var(--color-white);
    padding: 100px 0;
    overflow: hidden;
}

.radio-waves-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.1;
    background-image: 
        radial-gradient(circle at 20% 50%, transparent 0%, transparent 20%, var(--color-white) 21%, transparent 22%),
        radial-gradient(circle at 20% 50%, transparent 0%, transparent 40%, var(--color-white) 41%, transparent 42%),
        radial-gradient(circle at 20% 50%, transparent 0%, transparent 60%, var(--color-white) 61%, transparent 62%);
    animation: wavesPulse 3s ease-in-out infinite;
}

@keyframes wavesPulse {
    0%, 100% { opacity: 0.1; }
    50% { opacity: 0.2; }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: 20px;
    color: var(--color-white);
    animation: fadeInUp 0.8s ease;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 40px;
    opacity: 0.95;
    animation: fadeInUp 1s ease;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    flex-wrap: wrap;
    animation: fadeInUp 1.2s ease;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-family: var(--font-technical);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-secondary);
}

.stat-label {
    font-size: 1rem;
    opacity: 0.9;
}

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

/* Page Hero */
.page-hero {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: var(--color-white);
    padding: 80px 0 60px;
    text-align: center;
}

.page-hero h1 {
    color: var(--color-white);
    margin-bottom: 15px;
}

.page-hero p {
    font-size: 1.2rem;
    opacity: 0.95;
}

/* Section Styles */
.section {
    padding: 80px 0;
}

.section.alt-bg {
    background: var(--color-light);
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
    color: var(--color-primary);
    position: relative;
    padding-bottom: 15px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--color-secondary), var(--color-accent));
    border-radius: 2px;
}

.section-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 50px;
    font-size: 1.1rem;
    color: var(--color-gray);
}

/* Content Grid */
.content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.content-grid.reverse {
    direction: rtl;
}

.content-grid.reverse > * {
    direction: ltr;
}

.content-text h2, .content-text h3 {
    margin-bottom: 20px;
    color: var(--color-primary);
}

.content-text p {
    margin-bottom: 15px;
    line-height: 1.8;
}

.content-image img {
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.content-image img:hover {
    transform: scale(1.02);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

/* Timeline */
.timeline {
    position: relative;
    padding: 40px 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(180deg, var(--color-primary), var(--color-secondary));
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    align-items: center;
    margin-bottom: 60px;
    position: relative;
}

.timeline-item:nth-child(odd) {
    flex-direction: row;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

.timeline-marker {
    width: 30px;
    height: 30px;
    background: var(--color-white);
    border: 4px solid var(--color-primary);
    border-radius: 50%;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    transition: var(--transition);
}

.timeline-item:hover .timeline-marker {
    background: var(--color-secondary);
    transform: translateX(-50%) scale(1.2);
}

.timeline-content {
    flex: 1;
    background: var(--color-white);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    margin: 0 60px;
    transition: var(--transition);
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-right: calc(50% + 60px);
}

.timeline-item:nth-child(even) .timeline-content {
    margin-left: calc(50% + 60px);
}

.timeline-content:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.timeline-content h3 {
    color: var(--color-primary);
    margin-bottom: 10px;
}

.tech-spec {
    font-family: var(--font-technical);
    color: var(--color-secondary);
    font-size: 0.9rem;
    margin-bottom: 15px;
}

/* Components Grid */
.components-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.component-card {
    background: var(--color-white);
    padding: 40px 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
    border-top: 4px solid var(--color-primary);
}

.component-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
    border-top-color: var(--color-secondary);
}

.component-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
}

.component-icon svg {
    width: 100%;
    height: 100%;
}

.component-card h3 {
    color: var(--color-primary);
    margin-bottom: 15px;
}

.component-card p {
    color: var(--color-gray);
    line-height: 1.7;
}

/* Comparison Table */
.comparison-table-wrapper {
    overflow-x: auto;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-white);
    font-family: var(--font-technical);
}

.comparison-table thead {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: var(--color-white);
}

.comparison-table th,
.comparison-table td {
    padding: 20px;
    text-align: left;
    border-bottom: 1px solid var(--color-light);
}

.comparison-table tbody tr:hover {
    background: var(--color-light);
}

.comparison-table th {
    font-weight: 600;
    font-size: 1rem;
}

.comparison-table td {
    font-size: 0.95rem;
}

/* Simulator */
.simulator-container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
    background: var(--color-white);
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.simulator-display {
    position: relative;
    background: var(--color-light);
    border-radius: 10px;
    height: 400px;
    overflow: hidden;
}

.base-station {
    position: absolute;
    left: 50px;
    top: 50%;
    transform: translateY(-50%);
    width: 60px;
    height: 80px;
}

.mobile-device {
    position: absolute;
    right: 50px;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 60px;
}

#signal-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.simulator-controls {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.simulator-controls h3 {
    color: var(--color-primary);
    margin-bottom: 10px;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.control-group label {
    font-weight: 600;
    color: var(--color-gray);
    font-size: 0.95rem;
}

.control-group input[type="range"] {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: var(--color-light);
    outline: none;
    -webkit-appearance: none;
}

.control-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--color-primary);
    cursor: pointer;
}

.control-group input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--color-primary);
    cursor: pointer;
    border: none;
}

.control-group select {
    padding: 12px;
    border: 2px solid var(--color-light);
    border-radius: 5px;
    font-family: var(--font-technical);
    font-size: 0.95rem;
    background: var(--color-white);
    cursor: pointer;
    transition: var(--transition);
}

.control-group select:focus {
    outline: none;
    border-color: var(--color-primary);
}

#signal-value {
    font-family: var(--font-technical);
    color: var(--color-secondary);
    font-weight: 600;
}

/* Buttons */
.btn-primary,
.btn-secondary {
    padding: 14px 32px;
    border: none;
    border-radius: 5px;
    font-family: var(--font-readable);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-block;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: var(--color-white);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(0, 102, 204, 0.4);
}

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

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

.btn-large {
    padding: 16px 40px;
    font-size: 1.1rem;
}

/* Forms */
.form-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
    align-items: start;
}

.form-info h2 {
    color: var(--color-primary);
    margin-bottom: 20px;
}

.form-info p {
    margin-bottom: 30px;
    line-height: 1.8;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.contact-item h4 {
    color: var(--color-primary);
    margin-bottom: 8px;
}

.contact-item p {
    color: var(--color-gray);
    line-height: 1.6;
}

.contact-form,
.contact-form-main {
    background: var(--color-white);
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.form-group {
    margin-bottom: 25px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--color-gray);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--color-light);
    border-radius: 5px;
    font-family: var(--font-readable);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.checkbox-group {
    display: flex;
    align-items: center;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    font-weight: normal;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    cursor: pointer;
}

.form-note {
    font-size: 0.9rem;
    color: var(--color-gray);
    margin-top: 15px;
    opacity: 0.8;
}

/* Tech Details */
.tech-detail {
    padding: 60px 0;
}

.tech-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 40px;
    flex-wrap: wrap;
    gap: 20px;
}

.tech-header h2 {
    color: var(--color-primary);
}

.tech-badge {
    background: linear-gradient(135deg, var(--color-secondary), var(--color-accent));
    color: var(--color-white);
    padding: 10px 25px;
    border-radius: 25px;
    font-family: var(--font-technical);
    font-weight: 600;
}

.tech-specs-list {
    list-style: none;
    padding-left: 0;
}

.tech-specs-list li {
    padding: 12px 0 12px 30px;
    position: relative;
    line-height: 1.7;
}

.tech-specs-list li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--color-secondary);
    font-size: 1.2rem;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--color-white);
    padding: 35px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    border-left: 4px solid var(--color-secondary);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateX(5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
}

.feature-card h3 {
    color: var(--color-primary);
    margin-bottom: 15px;
}

/* Protocol Stacks */
.protocol-stacks {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-bottom: 30px;
}

.protocol-stack {
    background: var(--color-white);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.protocol-stack h3 {
    text-align: center;
    color: var(--color-primary);
    margin-bottom: 25px;
}

.protocol-layer {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: var(--color-white);
    padding: 15px;
    margin-bottom: 10px;
    border-radius: 5px;
    text-align: center;
    font-family: var(--font-technical);
    font-size: 0.9rem;
    transition: var(--transition);
}

.protocol-layer:hover {
    transform: scale(1.02);
}

.protocol-description {
    text-align: center;
    color: var(--color-gray);
    line-height: 1.8;
}

/* Architecture Diagram */
.architecture-diagram {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    padding: 40px;
    background: var(--color-light);
    border-radius: 10px;
    margin-bottom: 50px;
}

.arch-component {
    background: var(--color-white);
    padding: 30px 25px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    flex: 1;
    min-width: 200px;
    transition: var(--transition);
}

.arch-component:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.arch-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
}

.arch-component h3 {
    color: var(--color-primary);
    font-size: 1.1rem;
    margin-bottom: 10px;
}

.arch-component p {
    font-size: 0.9rem;
    color: var(--color-gray);
}

.arch-arrow {
    font-size: 2rem;
    color: var(--color-secondary);
    font-weight: 700;
}

/* RAN Details */
.ran-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.detail-card {
    background: var(--color-white);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
}

.detail-card h4 {
    color: var(--color-primary);
    margin-bottom: 15px;
}

.detail-card p {
    line-height: 1.8;
    color: var(--color-gray);
}

/* Core Network Grid */
.core-network-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.core-component {
    background: var(--color-white);
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.core-component h3 {
    color: var(--color-primary);
    margin-bottom: 25px;
    text-align: center;
    font-size: 1.8rem;
}

.component-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.component-item {
    padding: 20px;
    background: var(--color-light);
    border-radius: 8px;
    border-left: 4px solid var(--color-secondary);
}

.component-item strong {
    color: var(--color-primary);
    font-family: var(--font-technical);
    font-size: 1.1rem;
    display: block;
    margin-bottom: 8px;
}

.component-item p {
    margin: 0;
    line-height: 1.6;
}

/* Interfaces Grid */
.interfaces-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
}

.interface-card {
    background: var(--color-white);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

.interface-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
}

.interface-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.12);
}

.interface-card h3 {
    color: var(--color-primary);
    margin-bottom: 15px;
    font-family: var(--font-technical);
}

.interface-card p {
    line-height: 1.7;
    margin-bottom: 15px;
}

.interface-type {
    display: inline-block;
    background: var(--color-light);
    color: var(--color-primary);
    padding: 6px 15px;
    border-radius: 15px;
    font-size: 0.85rem;
    font-weight: 600;
}

/* Transport Grid */
.transport-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.transport-card {
    background: var(--color-white);
    padding: 35px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    border-top: 5px solid var(--color-accent);
    transition: var(--transition);
}

.transport-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.transport-card h3 {
    color: var(--color-primary);
    margin-bottom: 15px;
}

/* Network Slicing */
.slicing-examples {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.slice-card {
    background: var(--color-white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.slice-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.slice-header {
    padding: 30px;
    color: var(--color-white);
    text-align: center;
}

.slice-header h3 {
    color: var(--color-white);
    margin-bottom: 8px;
}

.slice-header p {
    opacity: 0.95;
    font-size: 0.95rem;
}

.slice-content {
    padding: 30px;
}

.slice-content p {
    margin-bottom: 20px;
    line-height: 1.8;
}

.slice-content ul {
    list-style: none;
    padding: 0;
}

.slice-content li {
    padding: 8px 0 8px 25px;
    position: relative;
    font-family: var(--font-technical);
    font-size: 0.95rem;
}

.slice-content li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-secondary);
    font-weight: 700;
}

/* Frequency Bands */
.frequency-bands {
    display: flex;
    flex-direction: column;
    gap: 50px;
}

.band-category {
    background: var(--color-white);
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.band-category h3 {
    color: var(--color-primary);
    margin-bottom: 30px;
    font-size: 1.8rem;
}

.band-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.band-item {
    background: var(--color-light);
    padding: 20px;
    border-radius: 8px;
    border-left: 4px solid var(--color-secondary);
}

.band-item h4 {
    color: var(--color-primary);
    margin-bottom: 10px;
    font-family: var(--font-technical);
}

.band-item p {
    margin-bottom: 8px;
    font-family: var(--font-technical);
    font-size: 0.9rem;
}

.band-use {
    display: inline-block;
    background: var(--color-primary);
    color: var(--color-white);
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.8rem;
}

.band-characteristics {
    background: var(--color-light);
    padding: 25px;
    border-radius: 8px;
}

.band-characteristics h4 {
    color: var(--color-primary);
    margin-bottom: 15px;
}

.band-characteristics ul {
    list-style: none;
    padding: 0;
}

.band-characteristics li {
    padding: 8px 0 8px 25px;
    position: relative;
    line-height: 1.7;
}

.band-characteristics li::before {
    content: '●';
    position: absolute;
    left: 0;
    color: var(--color-secondary);
}

/* Propagation Grid */
.propagation-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.prop-card {
    background: var(--color-white);
    padding: 35px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
}

.prop-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
}

.prop-card h3 {
    color: var(--color-primary);
    margin-bottom: 15px;
}

.prop-card p {
    line-height: 1.8;
    margin-bottom: 15px;
}

.formula {
    background: var(--color-light);
    padding: 15px;
    border-radius: 5px;
    font-family: var(--font-technical);
    text-align: center;
    color: var(--color-primary);
    font-weight: 600;
}

/* Carrier Aggregation */
.ca-types {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.ca-card {
    background: var(--color-white);
    padding: 35px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.ca-card h3 {
    color: var(--color-primary);
    margin-bottom: 20px;
}

.ca-diagram {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 20px;
}

.carrier {
    flex: 1;
    max-width: 100px;
    padding: 20px 10px;
    border-radius: 5px;
    color: var(--color-white);
    font-family: var(--font-technical);
    font-size: 0.85rem;
    font-weight: 600;
}

.carrier-gap {
    width: 20px;
    border-bottom: 2px dashed var(--color-gray);
    align-self: center;
}

/* Interference Techniques */
.interference-techniques {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.technique-card {
    background: var(--color-white);
    padding: 35px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    border-top: 4px solid var(--color-accent);
}

.technique-card h3 {
    color: var(--color-primary);
    margin-bottom: 15px;
}

/* Spectral Efficiency */
.efficiency-comparison {
    max-width: 800px;
    margin: 0 auto;
}

.efficiency-bar {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
    gap: 20px;
}

.efficiency-label {
    min-width: 120px;
    font-family: var(--font-technical);
    font-weight: 600;
    color: var(--color-gray);
}

.efficiency-value {
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    color: var(--color-white);
    padding: 12px 20px;
    border-radius: 5px;
    font-family: var(--font-technical);
    font-weight: 600;
    transition: width 1s ease;
}

.efficiency-note {
    text-align: center;
    margin-top: 30px;
    font-style: italic;
    color: var(--color-gray);
}

/* Equipment Grid */
.antenna-grid,
.equipment-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.equipment-card {
    background: var(--color-white);
    padding: 35px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    text-align: center;
    transition: var(--transition);
}

.equipment-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.12);
}

.equipment-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 25px;
}

.equipment-card h3 {
    color: var(--color-primary);
    margin-bottom: 15px;
}

.equipment-card p {
    line-height: 1.8;
    margin-bottom: 20px;
}

.specs {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.specs span {
    background: var(--color-light);
    padding: 6px 15px;
    border-radius: 15px;
    font-family: var(--font-technical);
    font-size: 0.85rem;
    color: var(--color-primary);
}

/* Core Equipment Grid */
.core-equipment-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.core-card {
    background: var(--color-white);
    padding: 35px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.core-card h3 {
    color: var(--color-primary);
    margin-bottom: 15px;
}

.core-card p {
    margin-bottom: 20px;
    line-height: 1.8;
}

.core-card ul {
    list-style: none;
    padding: 0;
}

.core-card li {
    padding: 8px 0 8px 25px;
    position: relative;
    line-height: 1.7;
}

.core-card li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--color-secondary);
    font-size: 1.1rem;
}

/* Small Cell Types */
.small-cell-types {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.cell-type-card {
    background: var(--color-white);
    padding: 35px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    border-top: 5px solid var(--color-primary);
}

.cell-type-card h3 {
    color: var(--color-primary);
    margin-bottom: 20px;
    text-align: center;
}

.cell-specs {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.spec-item {
    background: var(--color-light);
    padding: 8px 15px;
    border-radius: 15px;
    font-family: var(--font-technical);
    font-size: 0.85rem;
    color: var(--color-primary);
}

.cell-type-card p {
    margin-bottom: 20px;
    line-height: 1.8;
}

.cell-type-card h4 {
    color: var(--color-primary);
    margin-bottom: 12px;
    font-size: 1.1rem;
}

.cell-type-card ul {
    list-style: none;
    padding: 0;
}

.cell-type-card li {
    padding: 6px 0 6px 20px;
    position: relative;
}

.cell-type-card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-secondary);
    font-weight: 700;
}

/* Testing Grid */
.testing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.test-card {
    background: var(--color-white);
    padding: 35px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    border-left: 5px solid var(--color-accent);
    transition: var(--transition);
}

.test-card:hover {
    transform: translateX(5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
}

.test-card h3 {
    color: var(--color-primary);
    margin-bottom: 15px;
}

/* Glossary */
.glossary-search {
    max-width: 800px;
    margin: 0 auto 50px;
}

#glossary-search-input {
    width: 100%;
    padding: 15px 20px;
    border: 2px solid var(--color-light);
    border-radius: 8px;
    font-size: 1.1rem;
    margin-bottom: 20px;
    transition: var(--transition);
}

#glossary-search-input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.alphabet-filter {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

.filter-btn {
    padding: 8px 15px;
    border: 2px solid var(--color-light);
    background: var(--color-white);
    border-radius: 5px;
    cursor: pointer;
    font-weight: 600;
    color: var(--color-gray);
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

.glossary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 25px;
}

.glossary-item {
    background: var(--color-white);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    border-left: 4px solid var(--color-secondary);
    transition: var(--transition);
}

.glossary-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

.glossary-item h3 {
    color: var(--color-primary);
    font-size: 1.2rem;
    margin-bottom: 12px;
    font-family: var(--font-technical);
}

.glossary-item p {
    line-height: 1.8;
    color: var(--color-gray);
}

.glossary-item.hidden {
    display: none;
}

/* Contact Page */
.contact-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.contact-info-card {
    background: var(--color-white);
    padding: 40px 30px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    text-align: center;
    transition: var(--transition);
}

.contact-info-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.12);
}

.contact-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
}

.contact-info-card h3 {
    color: var(--color-primary);
    margin-bottom: 15px;
}

.contact-info-card p {
    color: var(--color-gray);
    line-height: 1.7;
}

.contact-form-section {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
    align-items: start;
}

.form-intro h2 {
    color: var(--color-primary);
    margin-bottom: 20px;
}

.form-intro p {
    margin-bottom: 30px;
    line-height: 1.8;
}

.form-features {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 12px;
}

.feature-item svg {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.feature-item span {
    font-weight: 500;
    color: var(--color-gray);
}

/* Map Section */
.section-map {
    background: var(--color-light);
}

.map-container {
    max-width: 900px;
    margin: 0 auto;
}

.map-placeholder {
    background: var(--color-white);
    border-radius: 10px;
    padding: 60px 40px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.map-info h3 {
    color: var(--color-primary);
    margin-bottom: 20px;
}

.map-info p {
    line-height: 1.8;
    margin-bottom: 15px;
}

.map-directions {
    margin-top: 30px;
    padding-top: 30px;
    border-top: 2px solid var(--color-light);
}

.map-directions strong {
    color: var(--color-primary);
}

/* FAQ Grid */
.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.faq-item {
    background: var(--color-white);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
}

.faq-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.12);
}

.faq-item h3 {
    color: var(--color-primary);
    margin-bottom: 12px;
    font-size: 1.1rem;
}

.faq-item p {
    line-height: 1.8;
    color: var(--color-gray);
}

/* Legal Content */
.legal-content {
    background: var(--color-light);
}

.legal-document {
    max-width: 900px;
    margin: 0 auto;
    background: var(--color-white);
    padding: 60px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.legal-document h2 {
    color: var(--color-primary);
    margin-top: 40px;
    margin-bottom: 20px;
    padding-top: 20px;
    border-top: 2px solid var(--color-light);
}

.legal-document h2:first-child {
    margin-top: 0;
    padding-top: 0;
    border-top: none;
}

.legal-document h3 {
    color: var(--color-primary);
    margin-top: 25px;
    margin-bottom: 15px;
    font-size: 1.3rem;
}

.legal-document p {
    margin-bottom: 15px;
    line-height: 1.9;
}

.legal-document ul {
    margin-bottom: 20px;
    padding-left: 30px;
}

.legal-document li {
    margin-bottom: 10px;
    line-height: 1.8;
}

.contact-box {
    background: var(--color-light);
    padding: 25px;
    border-radius: 8px;
    border-left: 4px solid var(--color-primary);
    margin: 25px 0;
}

.contact-box p {
    margin-bottom: 8px;
}

.contact-box strong {
    color: var(--color-primary);
}

/* Footer */
.footer {
    background: linear-gradient(135deg, var(--color-gray), var(--color-primary));
    color: var(--color-white);
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3,
.footer-section h4 {
    color: var(--color-white);
    margin-bottom: 20px;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.8;
    margin-bottom: 10px;
}

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

.footer-section li {
    margin-bottom: 12px;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.9);
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--color-secondary);
    padding-left: 5px;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.8);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .container {
        padding: 0 30px;
    }
    
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    h3 { font-size: 1.5rem; }
    
    .content-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .simulator-container {
        grid-template-columns: 1fr;
    }
    
    .form-wrapper,
    .contact-form-section {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .protocol-stacks,
    .core-network-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
        transition: left 0.3s ease;
        overflow-y: auto;
    }
    
    .nav.active {
        left: 0;
    }
    
    .nav ul {
        flex-direction: column;
        padding: 30px;
        gap: 0;
    }
    
    .nav li {
        width: 100%;
        border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    }
    
    .nav a {
        display: block;
        padding: 15px 20px;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .timeline::before {
        left: 30px;
    }
    
    .timeline-item {
        flex-direction: column !important;
        align-items: flex-start;
        padding-left: 60px;
    }
    
    .timeline-marker {
        left: 30px !important;
        transform: translateX(0) !important;
    }
    
    .timeline-content {
        margin: 0 !important;
    }
    
    .architecture-diagram {
        flex-direction: column;
    }
    
    .arch-arrow {
        transform: rotate(90deg);
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .legal-document {
        padding: 30px 20px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    h1 { font-size: 2rem; }
    h2 { font-size: 1.7rem; }
    h3 { font-size: 1.3rem; }
    
    .section {
        padding: 50px 0;
    }
    
    .hero {
        padding: 60px 0;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-stats {
        gap: 30px;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .components-grid,
    .features-grid,
    .glossary-grid,
    .contact-info-grid,
    .faq-grid {
        grid-template-columns: 1fr;
    }
    
    .alphabet-filter {
        gap: 5px;
    }
    
    .filter-btn {
        padding: 6px 12px;
        font-size: 0.9rem;
    }
    
    .cookie-content {
        flex-direction: column;
    }
    
    .cookie-buttons {
        width: 100%;
        justify-content: space-between;
    }
}

/* Print Styles */
@media print {
    .header,
    .cookie-banner,
    .mobile-menu-toggle,
    .footer,
    .simulator-container,
    button {
        display: none !important;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.5;
    }
    
    .section {
        page-break-inside: avoid;
    }
}

/* Animations */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

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

/* Accessibility */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Focus Styles */
a:focus,
button:focus,
input:focus,
select:focus,
textarea:focus {
    outline: 3px solid var(--color-secondary);
    outline-offset: 2px;
}

/* Selection */
::selection {
    background: var(--color-primary);
    color: var(--color-white);
}

::-moz-selection {
    background: var(--color-primary);
    color: var(--color-white);
}