/* 
 * teron-chain.life
 * Global Styles & Variables
 */

:root {
    /* Color Palette */
    --color-bg-primary: #0B1120;
    /* Very dark blue */
    --color-bg-secondary: #1E293B;
    /* Dark slate */
    --color-bg-tertiary: #334155;

    --color-accent: #0EA5E9;
    /* Sky Blue */
    --color-accent-hover: #0284C7;

    --color-text-primary: #F8FAFC;
    --color-text-secondary: #94A3B8;

    --color-success: #22c55e;
    --color-error: #ef4444;

    /* Typography */
    --font-main: 'Manrope', sans-serif;

    /* Spacing & Layout */
    --container-width: 1200px;
    --header-height: 80px;
    --border-radius: 12px;

    /* Animation */
    --transition-base: 0.3s ease-in-out;
}

/* Reset & Base */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-main);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    overflow-x: hidden;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

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

ul {
    list-style: none;
}

input,
button,
textarea {
    font-family: inherit;
    outline: none;
    border: none;
}

/* Container */
.container {
    width: 90%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 15px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition-base);
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(14, 165, 233, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(14, 165, 233, 0.4);
}

.btn-secondary {
    background: transparent;
    border: 1px solid var(--color-accent);
    color: var(--color-accent);
}

.btn-secondary:hover {
    background: rgba(14, 165, 233, 0.1);
}

.btn-sm {
    padding: 8px 20px;
    font-size: 0.9rem;
}

.full-width {
    width: 100%;
}

/* Section Common */
section {
    padding: 100px 0;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 20px;
    font-weight: 800;
    letter-spacing: -0.02em;
    background: linear-gradient(to right, #fff, #94A3B8);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-subtitle {
    text-align: center;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto 60px;
    font-size: 1.1rem;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background: rgba(11, 17, 32, 0.85);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.header-container {
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 1.2rem;
    letter-spacing: -0.02em;
    transition: opacity var(--transition-base);
}

.logo:hover {
    opacity: 0.8;
}

.nav-menu ul {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-menu a:not(.btn) {
    color: var(--color-text-secondary);
    font-weight: 500;
}

.nav-menu a:not(.btn):hover {
    color: var(--color-accent);
}

.mobile-menu-btn {
    display: none;
    /* Desktop default */
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
}

.mobile-menu-btn span {
    width: 25px;
    height: 2px;
    background-color: white;
    transition: var(--transition-base);
}

/* Mobile Nav */
@media (max-width: 768px) {
    .mobile-menu-btn {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: 0;
        width: 100%;
        height: 0;
        background: var(--color-bg-primary);
        overflow: hidden;
        transition: height var(--transition-base);
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

    .nav-menu.active {
        height: calc(100vh - var(--header-height));
    }

    .nav-menu ul {
        flex-direction: column;
        padding: 40px 20px;
        gap: 25px;
        margin-top: 200px;
    }

    .mobile-menu-btn.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 6px);
    }

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

    .mobile-menu-btn.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -6px);
    }
}

/* Hero Section */
.hero {
    position: relative;
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: radial-gradient(circle at center, #1e293b 0%, #0b1120 100%);
    overflow: hidden;
    padding-top: var(--header-height);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        linear-gradient(rgba(11, 17, 32, 0.7), rgba(11, 17, 32, 0.9)),
        url('https://images.unsplash.com/photo-1639322537228-f710d846310a?q=80&w=2832&auto=format&fit=crop');
    background-size: cover;
    background-position: center;
    z-index: 0;
    opacity: 0.4;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.badge {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(14, 165, 233, 0.1);
    border: 1px solid rgba(14, 165, 233, 0.3);
    border-radius: 50px;
    color: var(--color-accent);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 30px;
}

.hero h1 {
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: 24px;
    font-weight: 800;
}

.highlight {
    color: var(--color-accent);
    position: relative;
}

.hero .subtitle {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    margin-bottom: 40px;
}

.hero-actions {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

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

.feature-card {
    background: var(--color-bg-secondary);
    padding: 40px;
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: var(--color-accent);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.icon-box {
    width: 60px;
    height: 60px;
    background: rgba(14, 165, 233, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--color-accent);
    margin-bottom: 24px;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 16px;
}

.feature-card p {
    color: var(--color-text-secondary);
}

/* Services */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.service-item {
    background: var(--color-bg-secondary);
    padding: 30px;
    border-radius: var(--border-radius);
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition-base);
}

.service-item:hover {
    transform: translateY(-5px);
    border-color: var(--color-accent);
    box-shadow: 0 10px 25px rgba(14, 165, 233, 0.15);
}

.service-item.highlight-item {
    background: linear-gradient(135deg, var(--color-bg-secondary) 0%, rgba(14, 165, 233, 0.2) 100%);
    border-color: rgba(14, 165, 233, 0.3);
}

.service-item h3 {
    margin-bottom: 15px;
    color: var(--color-text-primary);
}

.service-item p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

/* Reviews */
.reviews-slider {
    display: flex;
    gap: 30px;
    overflow-x: auto;
    padding-bottom: 20px;
    scrollbar-width: none;
    /* Firefox */
}

.reviews-slider::-webkit-scrollbar {
    display: none;
    /* Chrome */
}

.review-card {
    min-width: 300px;
    flex: 1;
    background: var(--color-bg-secondary);
    padding: 30px;
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition-base);
}

.review-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-accent);
    box-shadow: 0 10px 25px rgba(14, 165, 233, 0.15);
}

.stars {
    color: #F59E0B;
    margin-bottom: 15px;
}

.review-card p {
    font-style: italic;
    color: var(--color-text-secondary);
    margin-bottom: 20px;
}

.review-card .author {
    font-weight: 700;
    color: var(--color-text-primary);
    margin: 0;
    /* Removing margin-bottom from previous context if any, block handles layout */
}

.review-author-block {
    display: flex;
    align-items: center;
    gap: 15px;
}

.author-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--color-accent);
}

/* Contact CTA */
.contact-cta .section-title,
.contact-cta .section-subtitle {
    margin-left: auto;
    margin-right: auto;
}

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

/* Contact */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.info-list {
    margin-top: 30px;
}

.info-list li {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
    font-size: 1.1rem;
    color: var(--color-text-secondary);
}

.info-list i {
    color: var(--color-accent);
    font-size: 1.2rem;
}

.contact-form-box {
    background: var(--color-bg-secondary);
    padding: 40px;
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.9rem;
    font-weight: 600;
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    background: var(--color-bg-primary);
    border: 1px solid var(--color-bg-tertiary);
    border-radius: 8px;
    color: white;
    font-size: 1rem;
    transition: border-color var(--transition-base);
}

.form-group input:focus {
    border-color: var(--color-accent);
}

.captcha-group {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 30px;
}

.captcha-group label {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-accent);
    min-width: 80px;
}

.captcha-group input {
    width: 80px;
    padding: 10px;
    background: var(--color-bg-primary);
    border: 1px solid var(--color-bg-tertiary);
    border-radius: 8px;
    color: white;
    text-align: center;
}

/* Footer */
.footer {
    background: var(--color-bg-primary);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: 80px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 60px;
}

.footer-col h4 {
    margin-bottom: 24px;
    font-size: 1.1rem;
    color: var(--color-text-primary);
}

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

.footer-col ul li a {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

.footer-col ul li a:hover {
    color: var(--color-accent);
}

.footer-col p {
    color: var(--color-text-secondary);
    margin-bottom: 12px;
    font-size: 0.95rem;
}

.logo-footer {
    font-size: 1.5rem;
    font-weight: 800;
    color: white;
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    transition: color var(--transition-base);
}

.logo-footer:hover {
    color: var(--color-accent);
}

.copyright {
    text-align: center;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

/* Cookie Popup */
.cookie-popup {
    position: fixed;
    bottom: 30px;
    left: 30px;
    /* Left aligned often better for notices */
    max-width: 400px;
    background: var(--color-bg-secondary);
    padding: 24px;
    border-radius: var(--border-radius);
    border: 1px solid var(--color-accent);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    z-index: 9000;
    transform: translateY(150%);
    transition: transform 0.5s ease-out;
}

.cookie-popup.active {
    transform: translateY(0);
}

.cookie-popup h3 {
    margin-bottom: 10px;
}

.cookie-popup p {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-bottom: 20px;
}

.cookie-popup a {
    color: var(--color-accent);
    text-decoration: underline;
}

.cookie-actions {
    display: flex;
    gap: 15px;
}

/* Modals */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.3s;
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--color-bg-secondary);
    width: 90%;
    max-width: 600px;
    max-height: 85vh;
    border-radius: var(--border-radius);
    padding: 40px;
    position: relative;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transform: translateY(20px);
    transition: transform 0.3s;
    overflow-y: auto;
}

.modal.active .modal-content {
    transform: translateY(0);
}

.close-modal {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--color-text-secondary);
    transition: color 0.2s;
}

.close-modal:hover {
    color: white;
}

.modal h2 {
    margin-bottom: 20px;
    color: var(--color-accent);
}

.modal-body {
    color: var(--color-text-secondary);
}

.modal-body h3 {
    color: white;
    margin: 20px 0 10px;
    font-size: 1.1rem;
}

.modal-body ul {
    list-style: disc;
    padding-left: 20px;
    margin-bottom: 15px;
}

.modal-body li {
    margin-bottom: 5px;
}

/* Responsive Fixes */
@media (max-width: 768px) {
    .header-container {
        padding: 0 20px;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 480px) {
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-actions {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }
}