/* ========================================
   RESET & BASE
   ======================================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    height: 100%;
    width: 100%;
    overflow-x: hidden;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: #0a0a0a;
    color: #ffffff;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   CONTAINER
   ======================================== */
.container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 24px 16px;
    background: linear-gradient(180deg, #0d0d0d 0%, #0a0a0a 50%, #0a0a0a 100%);
}

/* ========================================
   CARD
   ======================================== */
.card {
    width: 100%;
    max-width: 400px;
    background: linear-gradient(145deg, #152238 0%, #0f1b2d 40%, #0d1825 100%);
    border: 1px solid rgba(55, 174, 226, 0.12);
    border-radius: 18px;
    padding: 40px 28px 32px;
    text-align: center;
    position: relative;
    box-shadow:
        0 4px 30px rgba(0, 0, 0, 0.5),
        0 0 60px rgba(30, 80, 130, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.03);
    animation: cardFadeIn 0.6s ease-out;
}

@keyframes cardFadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   TELEGRAM ICON
   ======================================== */
.telegram-icon {
    margin-bottom: 24px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.telegram-icon svg {
    filter: drop-shadow(0 4px 12px rgba(55, 174, 226, 0.3));
    transition: transform 0.3s ease;
}

.telegram-icon svg:hover {
    transform: scale(1.05);
}

/* ========================================
   TITLE
   ======================================== */
.title {
    font-size: 22px;
    font-weight: 700;
    color: #4fc3f7;
    margin-bottom: 16px;
    letter-spacing: -0.3px;
    line-height: 1.3;
}

.lock-emoji {
    display: inline-block;
    font-size: 20px;
    vertical-align: middle;
    margin-left: 2px;
}

/* ========================================
   DESCRIPTION
   ======================================== */
.description {
    font-size: 14px;
    font-weight: 400;
    color: #b0bec5;
    line-height: 1.65;
    margin-bottom: 24px;
    padding: 0 4px;
}

/* ========================================
   FEATURES LIST
   ======================================== */
.features {
    list-style: none;
    text-align: left;
    margin-bottom: 28px;
    padding: 0 8px;
}

.features li {
    font-size: 14.5px;
    font-weight: 500;
    color: #cfd8dc;
    padding: 6px 0;
    display: flex;
    align-items: center;
    gap: 8px;
    line-height: 1.4;
}

.feature-icon {
    font-size: 16px;
    flex-shrink: 0;
    width: 22px;
    text-align: center;
}

/* ========================================
   CTA BUTTON
   ======================================== */
.cta-button {
    display: block;
    width: 100%;
    padding: 16px 24px;
    background: linear-gradient(135deg, #2196F3 0%, #1976D2 100%);
    color: #ffffff;
    font-family: 'Inter', sans-serif;
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    text-decoration: none;
    text-align: center;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.25s ease;
    box-shadow:
        0 4px 16px rgba(33, 150, 243, 0.35),
        0 2px 4px rgba(0, 0, 0, 0.2);
    position: relative;
    overflow: hidden;
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.12),
        transparent
    );
    transition: left 0.5s ease;
}

.cta-button:hover {
    background: linear-gradient(135deg, #42A5F5 0%, #2196F3 100%);
    box-shadow:
        0 6px 24px rgba(33, 150, 243, 0.45),
        0 2px 8px rgba(0, 0, 0, 0.3);
    transform: translateY(-1px);
}

.cta-button:hover::before {
    left: 100%;
}

.cta-button:active {
    transform: translateY(0);
    box-shadow:
        0 2px 8px rgba(33, 150, 243, 0.3),
        0 1px 2px rgba(0, 0, 0, 0.2);
}

/* ========================================
   REDIRECT NOTICE
   ======================================== */
.redirect-notice {
    font-size: 12px;
    font-weight: 400;
    color: #607d8b;
    margin-top: 14px;
    letter-spacing: 0.2px;
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 420px) {
    .container {
        padding: 20px 12px;
    }

    .card {
        padding: 36px 22px 28px;
        border-radius: 16px;
    }

    .title {
        font-size: 20px;
    }

    .description {
        font-size: 13.5px;
    }

    .features li {
        font-size: 14px;
    }

    .cta-button {
        padding: 15px 20px;
        font-size: 14px;
    }
}

@media (min-width: 768px) {
    .card {
        padding: 48px 36px 36px;
    }
}