:root {
    --bg-dark: #0a0e17;
    --bg-card: rgba(18, 24, 38, 0.6);
    --primary: #00ff9d;
    --primary-glow: rgba(0, 255, 157, 0.3);
    --secondary: #3b82f6;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --border: rgba(255, 255, 255, 0.1);
    --font: 'Outfit', sans-serif;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font);
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Background glows */
.bg-elements {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
    overflow: hidden;
}

.glow {
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.15;
}

.glow-1 {
    top: -200px;
    left: -100px;
    background: var(--primary);
}

.glow-2 {
    bottom: -200px;
    right: -100px;
    background: var(--secondary);
}

/* Main Layout */
.container {
    width: 100%;
    max-width: 680px;
    padding: 40px 20px;
    z-index: 1;
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
}

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

.logo-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    box-shadow: 0 0 20px var(--primary-glow);
}

header h1 {
    font-size: 24px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.badge {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-muted);
}

/* Hero */
.hero {
    text-align: center;
    margin-bottom: 48px;
}

.hero h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 16px;
    background: linear-gradient(to right, #fff, #a5b4fc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    color: var(--text-muted);
    font-size: 16px;
    max-width: 480px;
    margin: 0 auto 32px;
}

.exchange-rate {
    display: inline-flex;
    align-items: center;
    gap: 16px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border);
    padding: 12px 24px;
    border-radius: 100px;
    font-weight: 600;
}

.rate-value.highlight {
    color: var(--primary);
    text-shadow: 0 0 10px var(--primary-glow);
}

/* Cards */
.card-container {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.step-card {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 32px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.step-card:hover {
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.2);
}

.step-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.step-number {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 32px;
    height: 32px;
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    border-radius: 50%;
    font-weight: 700;
    font-size: 14px;
}

.step-card h3 {
    font-size: 20px;
    font-weight: 600;
}

/* Wallet Box */
.wallet-box {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--border);
    padding: 16px;
    border-radius: 12px;
    margin: 16px 0;
}

.wallet-address {
    font-family: monospace;
    font-size: 14px;
    color: var(--primary);
    word-break: break-all;
}

.btn-icon {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    transition: all 0.2s;
}

.btn-icon:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
}

.qr-container {
    display: flex;
    justify-content: center;
    margin-top: 24px;
    padding: 16px;
    background: #fff;
    border-radius: 12px;
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
}

/* Forms */
.form-layout {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.input-group label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-muted);
}

input {
    width: 100%;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--border);
    color: #fff;
    padding: 14px 16px;
    border-radius: 12px;
    font-family: monospace;
    font-size: 14px;
    transition: border-color 0.3s, box-shadow 0.3s;
    outline: none;
}

input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary-glow);
}

.btn-primary {
    position: relative;
    width: 100%;
    background: var(--primary);
    color: #000;
    border: none;
    padding: 16px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 700;
    font-family: var(--font);
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 8px;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px var(--primary-glow);
}

.btn-primary:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.loader {
    display: none;
    width: 24px;
    height: 24px;
    border: 3px solid rgba(0, 0, 0, 0.3);
    border-radius: 50%;
    border-top-color: #000;
    animation: spin 1s ease-in-out infinite;
}

.btn-primary.loading span {
    display: none;
}

.btn-primary.loading .loader {
    display: block;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Status Message */
.status-message {
    font-size: 14px;
    text-align: center;
    padding: 12px;
    border-radius: 8px;
    display: none;
}

.status-message.success {
    display: block;
    background: rgba(0, 255, 157, 0.1);
    color: var(--primary);
    border: 1px solid rgba(0, 255, 157, 0.2);
}

.status-message.error {
    display: block;
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

/* Toast */
.toast {
    position: fixed;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: #fff;
    color: #000;
    padding: 12px 24px;
    border-radius: 100px;
    font-weight: 600;
    font-size: 14px;
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    z-index: 100;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

/* Responsive */
@media (max-width: 600px) {
    .hero h2 {
        font-size: 28px;
    }

    .step-card {
        padding: 24px;
    }
}