/* =========================================
   COVERHUB — Modern VPN Landing Page
   Design System + Full Responsive CSS
   ========================================= */

/* --- CSS Custom Properties --- */
:root {
    --bg-primary: #0a0b10;
    --bg-secondary: #12141c;
    --bg-card: #161925;
    --bg-card-hover: #1c1f2e;
    --border-subtle: rgba(255,255,255,0.06);
    --border-card: rgba(255,255,255,0.08);

    --text-primary: #f1f3f9;
    --text-secondary: #8b92a8;
    --text-muted: #5a6178;

    --accent: #7C3AED;
    --accent-light: #a78bfa;
    --accent-dark: #5b21b6;
    --cyan: #06B6D4;
    --gradient: linear-gradient(135deg, #7C3AED 0%, #06B6D4 100%);
    --gradient-text: linear-gradient(90deg, #a78bfa, #7C3AED, #06B6D4);

    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;

    --shadow-sm: 0 2px 8px rgba(0,0,0,0.15);
    --shadow-md: 0 8px 32px rgba(0,0,0,0.2);
    --shadow-lg: 0 16px 64px rgba(0,0,0,0.3);
    --shadow-glow: 0 0 40px rgba(124,58,237,0.15);

    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --header-h: 72px;
    --container-max: 1200px;

    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    scroll-padding-top: var(--header-h);
}

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

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font: inherit; color: inherit; }

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

/* --- Reveal animations --- */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* =========================================
   HEADER
   ========================================= */
.header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    height: var(--header-h);
    background: rgba(10, 11, 16, 0.8);
    backdrop-filter: blur(20px) saturate(1.4);
    -webkit-backdrop-filter: blur(20px) saturate(1.4);
    border-bottom: 1px solid var(--border-subtle);
    transition: background 0.3s, box-shadow 0.3s;
}
.header.scrolled {
    background: rgba(10, 11, 16, 0.95);
    box-shadow: 0 4px 24px rgba(0,0,0,0.3);
}

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

/* Logo */
.logo {
    font-size: 1.5rem;
    font-weight: 900;
    letter-spacing: 1.5px;
    color: var(--text-primary);
    white-space: nowrap;
    transition: opacity 0.2s;
}
.logo:hover { opacity: 0.8; }
.logo span { color: var(--accent); }
.logo--footer { font-size: 1.3rem; }

/* Nav */
.nav {
    display: flex;
    align-items: center;
    gap: 32px;
}
.nav__link {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    transition: color 0.2s;
    position: relative;
}
.nav__link::after {
    content: '';
    position: absolute;
    bottom: -4px; left: 0; right: 0;
    height: 2px;
    background: var(--gradient);
    border-radius: 1px;
    transform: scaleX(0);
    transition: transform 0.3s var(--ease-out);
}
.nav__link:hover { color: var(--text-primary); }
.nav__link:hover::after { transform: scaleX(1); }

/* Header right area */
.header__right {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 700;
    font-size: 0.95rem;
    border-radius: var(--radius-sm);
    padding: 12px 24px;
    transition: all 0.25s var(--ease-out);
    white-space: nowrap;
    cursor: pointer;
    text-decoration: none;
}
.btn--sm { padding: 8px 18px; font-size: 0.85rem; }
.btn--lg { padding: 16px 36px; font-size: 1.1rem; border-radius: var(--radius-md); }

.btn--primary {
    background: var(--accent);
    color: #fff;
    border: none;
}
.btn--primary:hover {
    background: var(--accent-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(124,58,237,0.4);
}

.btn--accent {
    background: var(--gradient);
    color: #fff;
    border: none;
    position: relative;
    overflow: hidden;
}
.btn--accent::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.15) 0%, transparent 50%);
    opacity: 0;
    transition: opacity 0.3s;
}
.btn--accent:hover::before { opacity: 1; }
.btn--accent:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(124,58,237,0.35);
}

.btn--outline {
    background: transparent;
    color: var(--text-primary);
    border: 1.5px solid var(--border-card);
    border-radius: var(--radius-sm);
}
.btn--outline:hover {
    border-color: var(--accent);
    color: var(--accent-light);
    background: rgba(124,58,237,0.08);
    transform: translateY(-1px);
}

/* --- Language Selector --- */
.lang-selector { position: relative; }
.lang-selector__btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border-subtle);
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 600;
    transition: all 0.2s;
}
.lang-selector__btn:hover {
    background: rgba(255,255,255,0.08);
    color: var(--text-primary);
}
.lang-selector__arrow {
    transition: transform 0.2s;
}
.lang-selector.open .lang-selector__arrow {
    transform: rotate(180deg);
}
.lang-selector__flag { font-size: 1rem; }
.lang-selector__dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-md);
    padding: 6px;
    min-width: 160px;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px) scale(0.95);
    transition: all 0.25s var(--ease-out);
    z-index: 100;
}
.lang-selector.open .lang-selector__dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}
.lang-selector__option {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all 0.15s;
}
.lang-selector__option:hover {
    background: rgba(124,58,237,0.1);
    color: var(--text-primary);
}
.lang-selector__option.active {
    color: var(--accent-light);
    background: rgba(124,58,237,0.12);
}

/* --- Hamburger --- */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    padding: 4px;
}
.hamburger span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s var(--ease-out);
    transform-origin: center;
}
.hamburger.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.hamburger.active span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}
.hamburger.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* =========================================
   HERO
   ========================================= */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: calc(var(--header-h) + 40px) 0 60px;
    overflow: hidden;
}

.hero__bg {
    position: absolute;
    inset: 0;
    z-index: 0;
    overflow: hidden;
}

.hero__orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.35;
    animation: orbFloat 12s ease-in-out infinite;
}
.hero__orb--1 {
    width: 500px; height: 500px;
    background: var(--accent);
    top: -10%; right: -5%;
    animation-delay: 0s;
}
.hero__orb--2 {
    width: 400px; height: 400px;
    background: var(--cyan);
    bottom: -10%; left: -5%;
    animation-delay: -4s;
}
.hero__orb--3 {
    width: 300px; height: 300px;
    background: #ec4899;
    top: 40%; left: 40%;
    animation-delay: -8s;
    opacity: 0.2;
}

@keyframes orbFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.05); }
    66% { transform: translate(-20px, 20px) scale(0.95); }
}

.hero__inner {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(124,58,237,0.12);
    border: 1px solid rgba(124,58,237,0.25);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent-light);
    margin-bottom: 28px;
    animation: fadeInDown 0.8s var(--ease-out) both;
}

.hero__title {
    font-size: clamp(2.5rem, 6vw, 4.2rem);
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: 20px;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.8s var(--ease-out) 0.1s both;
}

.hero__subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    max-width: 560px;
    margin: 0 auto 36px;
    line-height: 1.7;
    animation: fadeInUp 0.8s var(--ease-out) 0.2s both;
}

.hero__actions {
    animation: fadeInUp 0.8s var(--ease-out) 0.3s both;
}

.hero__stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 28px;
    margin-top: 56px;
    animation: fadeInUp 0.8s var(--ease-out) 0.4s both;
}
.hero__stat {
    display: flex;
    flex-direction: column;
    align-items: center;
}
.hero__stat-num {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-primary);
}
.hero__stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-weight: 600;
    margin-top: 2px;
}
.hero__stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border-subtle);
}

.hero__speed-disclaimer {
    margin-top: 16px;
    font-size: 0.75rem;
    color: var(--text-muted);
    text-align: center;
    max-width: 480px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.5;
    opacity: 0.8;
    animation: fadeInUp 0.8s var(--ease-out) 0.6s both;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-16px); }
    to { opacity: 1; transform: translateY(0); }
}

/* =========================================
   SECTIONS — Common
   ========================================= */
.section__title {
    text-align: center;
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 800;
    margin-bottom: 36px;
    letter-spacing: -0.01em;
    color: var(--text-primary);
}

/* =========================================
   FEATURES
   ========================================= */
.features {
    padding: 72px 0;
    background: var(--bg-secondary);
    position: relative;
}
.features::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-card), transparent);
}

.features__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.feature-card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    text-align: center;
    transition: all 0.4s var(--ease-out);
    overflow: hidden;
}
.feature-card__glow {
    position: absolute;
    top: -60%; left: 50%; transform: translateX(-50%);
    width: 200px; height: 200px;
    background: radial-gradient(circle, rgba(124,58,237,0.15), transparent 70%);
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.5s;
    pointer-events: none;
}
.feature-card:hover .feature-card__glow { opacity: 1; }
.feature-card:hover {
    border-color: rgba(124,58,237,0.25);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.feature-card__icon {
    font-size: 2.8rem;
    margin-bottom: 18px;
    display: inline-block;
    transition: transform 0.3s var(--ease-spring);
}
.feature-card:hover .feature-card__icon { transform: scale(1.15); }

.feature-card__title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text-primary);
}
.feature-card__desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* =========================================
   TARIFFS
   ========================================= */
.tariffs {
    padding: 72px 0;
    background: var(--bg-primary);
}

.tariffs__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    align-items: start;
}

.tariff-card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    text-align: center;
    transition: all 0.4s var(--ease-out);
}
.tariff-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
    border-color: rgba(124,58,237,0.2);
}

.tariff-card--popular {
    border-color: var(--accent);
    background: linear-gradient(180deg, rgba(124,58,237,0.08) 0%, var(--bg-card) 100%);
    transform: scale(1.04);
    box-shadow: 0 0 40px rgba(124,58,237,0.12);
}
.tariff-card--popular:hover {
    transform: scale(1.04) translateY(-4px);
}

.tariff-card__badge {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 5px 18px;
    border-radius: 50px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.tariff-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.tariff-card__price {
    font-size: 2.8rem;
    font-weight: 900;
    color: var(--text-primary);
    line-height: 1;
}
.tariff-card__price small {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-muted);
}

.tariff-card__period {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 24px;
}

.tariff-card__features {
    text-align: left;
    margin-bottom: 28px;
}
.tariff-card__features li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-subtle);
}
.tariff-card__features li:last-child { border-bottom: none; }
.tariff-card__features svg { color: var(--accent); flex-shrink: 0; }

.tariff-card .btn { width: 100%; }

/* =========================================
   WHY CHOOSE
   ========================================= */
.why-choose {
    padding: 72px 0;
    background: var(--bg-secondary);
    position: relative;
}
.why-choose::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-card), transparent);
}

.why-choose__banner {
    text-align: center;
    margin-bottom: 48px;
}
.why-choose__stat-num {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 900;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
    line-height: 1.1;
}
.why-choose__stat-label {
    font-size: 1rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 600;
    margin-top: 4px;
    display: block;
}

.why-choose__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.why-choose-card {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    text-align: center;
    transition: all 0.4s var(--ease-out);
}
.why-choose-card:hover {
    border-color: rgba(124,58,237,0.2);
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}
.why-choose-card__icon {
    font-size: 2rem;
    margin-bottom: 16px;
}
.why-choose-card__title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}
.why-choose-card__desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* =========================================
   FAQ
   ========================================= */
.faq {
    padding: 72px 0;
    background: var(--bg-primary);
}

.faq__list {
    max-width: 760px;
    margin: 0 auto;
}

.faq__item {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-md);
    margin-bottom: 16px;
    overflow: hidden;
    transition: border-color 0.3s;
}
.faq__item:hover { border-color: rgba(124,58,237,0.2); }
.faq__item.open { border-color: rgba(124,58,237,0.3); }

.faq__question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 20px 24px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    text-align: left;
    transition: color 0.2s;
    gap: 16px;
}
.faq__question:hover { color: var(--accent-light); }

.faq__chevron {
    flex-shrink: 0;
    color: var(--text-muted);
    transition: transform 0.3s var(--ease-out), color 0.3s;
}
.faq__item.open .faq__chevron {
    transform: rotate(180deg);
    color: var(--accent);
}

.faq__answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s var(--ease-out);
}
.faq__item.open .faq__answer {
    max-height: 600px;
}

.faq__answer-inner {
    padding: 0 24px 24px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.7;
}
.faq__answer-inner ul,
.faq__answer-inner ol {
    padding-left: 20px;
    margin-bottom: 12px;
}
.faq__answer-inner ul { list-style: disc; }
.faq__answer-inner ol { list-style: decimal; }
.faq__answer-inner li {
    margin-bottom: 8px;
}
.faq__answer-inner p {
    margin-top: 12px;
}
.faq__answer-inner strong,
.faq__answer-inner b {
    color: var(--text-primary);
}

/* =========================================
   FOOTER
   ========================================= */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-subtle);
    padding: 64px 0 24px;
}

.footer__top {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    margin-bottom: 48px;
}

.footer__tagline {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 12px;
}

.footer__col {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.footer__col-title {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--text-muted);
    margin-bottom: 6px;
}
.footer__link {
    font-size: 0.9rem;
    color: var(--text-secondary);
    transition: color 0.2s;
}
.footer__link:hover { color: var(--accent-light); }

.footer__bottom {
    padding-top: 24px;
    border-top: 1px solid var(--border-subtle);
    text-align: center;
}
.footer-rights {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* =========================================
   MODALS
   ========================================= */
.modal {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s var(--ease-out);
}
.modal.show {
    opacity: 1;
    visibility: visible;
}

.modal__overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.modal__content {
    position: relative;
    z-index: 1;
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-xl);
    max-width: 720px;
    width: 90vw;
    max-height: 80vh;
    padding: 36px 32px 28px;
    box-shadow: var(--shadow-lg);
    transform: translateY(20px) scale(0.96);
    transition: transform 0.3s var(--ease-out);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}
.modal.show .modal__content {
    transform: translateY(0) scale(1);
}

.modal__close {
    position: absolute;
    top: 16px; right: 16px;
    width: 36px; height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--text-muted);
    transition: all 0.2s;
    z-index: 2;
}
.modal__close:hover {
    background: rgba(255,255,255,0.05);
    color: var(--text-primary);
}

.modal__title {
    font-size: 1.4rem;
    font-weight: 800;
    margin-bottom: 20px;
    padding-right: 40px;
}

.modal__body {
    overflow-y: auto;
    flex: 1;
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
    padding-right: 8px;
}
.modal__body p { margin-bottom: 12px; }
.modal__body ul { padding-left: 18px; list-style: disc; margin: 8px 0; }
.modal__body ol { padding-left: 18px; list-style: decimal; margin: 8px 0; }
.modal__body li { margin-bottom: 6px; }

/* Custom scrollbar */
.modal__body::-webkit-scrollbar { width: 6px; }
.modal__body::-webkit-scrollbar-track { background: transparent; }
.modal__body::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.1);
    border-radius: 3px;
}
.modal__body::-webkit-scrollbar-thumb:hover {
    background: rgba(255,255,255,0.2);
}

/* =========================================
   RESPONSIVE — Tablets
   ========================================= */
@media (max-width: 1024px) {
    .features__grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .tariffs__grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .why-choose__grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .tariff-card--popular {
        transform: scale(1);
    }
    .tariff-card--popular:hover {
        transform: translateY(-4px);
    }
    .footer__top {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
}

/* =========================================
   RESPONSIVE — Mobile nav
   ========================================= */
@media (max-width: 768px) {
    :root {
        --header-h: 64px;
    }

    .hamburger {
        display: flex;
    }

    .nav {
        position: fixed;
        top: 0; right: 0;
        width: min(320px, 85vw);
        height: 100vh;
        background: var(--bg-secondary);
        border-left: 1px solid var(--border-card);
        flex-direction: column;
        align-items: stretch;
        padding: calc(var(--header-h) + 24px) 28px 28px;
        gap: 0;
        transform: translateX(100%);
        transition: transform 0.4s var(--ease-out);
        box-shadow: -10px 0 40px rgba(0,0,0,0.3);
        z-index: 999;
    }
    .nav.open {
        transform: translateX(0);
    }
    .nav__link {
        padding: 16px 0;
        font-size: 1rem;
        border-bottom: 1px solid var(--border-subtle);
    }
    .nav__link::after { display: none; }

    .nav .btn--sm {
        margin-top: 16px;
        padding: 14px;
        width: 100%;
        text-align: center;
    }

    /* Backdrop for mobile nav */
    .nav-backdrop {
        position: fixed;
        inset: 0;
        background: rgba(0,0,0,0.5);
        z-index: 998;
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s;
    }
    .nav-backdrop.show {
        opacity: 1;
        visibility: visible;
    }

    .hero__title {
        font-size: clamp(2rem, 8vw, 3rem);
    }
    .hero__stats {
        gap: 20px;
        margin-top: 40px;
        flex-wrap: wrap;
    }
    .hero__stat-num { font-size: 1.5rem; }
    .hero__stat-divider { height: 30px; }

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

    .tariffs__grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }

    .features__grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }

    .footer__top {
        grid-template-columns: 1fr;
        gap: 28px;
        text-align: center;
    }
    .footer__col {
        align-items: center;
    }

    .section__title {
        margin-bottom: 36px;
    }

    .features, .tariffs, .why-choose, .faq {
        padding: 64px 0;
    }

    .faq__question {
        padding: 16px 18px;
        font-size: 0.95rem;
    }
    .faq__answer-inner {
        padding: 0 18px 18px;
    }
}

/* =========================================
   RESPONSIVE — Small phones
   ========================================= */
@media (max-width: 480px) {
    .container { padding: 0 16px; }

    .hero {
        min-height: auto;
        padding: calc(var(--header-h) + 48px) 0 48px;
    }
    .hero__title {
        font-size: 1.8rem;
    }
    .hero__subtitle { font-size: 0.95rem; }
    .hero__badge { font-size: 0.75rem; padding: 6px 14px; }

    .btn--lg { padding: 14px 28px; font-size: 1rem; }

    .tariff-card { padding: 28px 20px; }
    .tariff-card__price { font-size: 2.2rem; }
    .tariff-card__price small { font-size: 1.1rem; }

    .feature-card { padding: 28px 20px; }

    .why-choose-card { padding: 24px 20px; }

    .modal__content {
        width: 95vw;
        max-height: 85vh;
        padding: 28px 20px 20px;
        border-radius: var(--radius-lg);
    }
}

/* =========================================
   Scrollbar (global)
   ========================================= */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.08);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(255,255,255,0.15);
}

/* --- Selection --- */
::selection {
    background: rgba(124,58,237,0.3);
    color: #fff;
}