:root {
    --bg-color: #0b0f19;
    --card-bg: #151a28;
    --primary: #00e5ff;
    --primary-hover: #00b8cc;
    --text-main: #ffffff;
    --text-muted: #8892b0;
    --border: #232b42;
    --success: #00ff88;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 500px;
    text-align: center;
}

header {
    margin-bottom: 40px;
}

.logo {
    max-width: 150px;
    margin-bottom: 15px;
}

h1 {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    background: linear-gradient(90deg, var(--primary), var(--success));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-top: 5px;
}

.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.card h2 {
    font-size: 1.4rem;
    margin-bottom: 10px;
}

.card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.5;
    margin-bottom: 25px;
}

.btn-primary, .btn-telegram {
    display: inline-block;
    width: 100%;
    padding: 14px 20px;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
}

.btn-primary {
    background-color: var(--primary);
    color: #000;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 229, 255, 0.4);
}

.btn-telegram {
    background-color: #2AABEE;
    color: #fff;
    margin-top: 15px;
}

.btn-telegram:hover {
    background-color: #229ED9;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(42, 171, 238, 0.4);
}

.btn-outline {
    display: inline-block;
    padding: 10px 15px;
    border: 1px solid var(--primary);
    color: var(--primary);
    text-decoration: none;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.2s;
    flex: 1;
    text-align: center;
}

.btn-outline:hover {
    background-color: rgba(0, 229, 255, 0.1);
}

.hidden {
    display: none !important;
}

.key-container {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

input[type="text"] {
    flex: 1;
    background-color: var(--bg-color);
    border: 1px solid var(--border);
    color: var(--text-muted);
    padding: 12px;
    border-radius: 8px;
    font-size: 0.9rem;
    outline: none;
}

.btn-copy {
    background-color: var(--border);
    color: var(--text-main);
    border: none;
    border-radius: 8px;
    padding: 0 15px;
    cursor: pointer;
    font-weight: 500;
    transition: 0.2s;
}

.btn-copy:hover {
    background-color: #313c59;
}

.qrcode {
    background-color: #fff;
    padding: 10px;
    border-radius: 10px;
    display: inline-block;
    margin-bottom: 25px;
}

.qrcode img {
    display: block;
}

.apps h3, .telegram-binding h3 {
    font-size: 1.1rem;
    margin-bottom: 15px;
    text-align: left;
    color: var(--text-main);
}

.app-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 25px;
}

.telegram-binding {
    text-align: left;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}

.error {
    color: #ff4757;
    margin-top: 15px;
    font-size: 0.9rem;
}

#loader {
    color: var(--primary);
    font-weight: 500;
    margin-top: 10px;
}

footer {
    margin-top: 40px;
    color: var(--text-muted);
    font-size: 0.8rem;
}