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

:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --success-gradient: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    --bg-dark: #0f0f23;
    --bg-card: rgba(255, 255, 255, 0.05);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --border-color: rgba(255, 255, 255, 0.1);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 30px 80px rgba(0, 0, 0, 0.6);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow-x: hidden;
    position: relative;
}

/* Animated Background */
.background-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    overflow: hidden;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
    animation: float 20s infinite ease-in-out;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    top: -10%;
    left: -10%;
    animation-delay: 0s;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    bottom: -10%;
    right: -10%;
    animation-delay: 7s;
}

.orb-3 {
    width: 350px;
    height: 350px;
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: 14s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(30px, -50px) scale(1.1);
    }
    66% {
        transform: translate(-20px, 20px) scale(0.9);
    }
}

/* Container */
.container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 500px;
    padding: 20px;
}

/* Card */
.card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 40px;
    box-shadow: var(--shadow-xl);
    animation: slideUp 0.6s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Card Header */
.card-header {
    text-align: center;
    margin-bottom: 32px;
}

.icon-wrapper {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: var(--primary-gradient);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
    animation: pulse 2s infinite;
}

.icon-wrapper.success-icon {
    background: var(--success-gradient);
    box-shadow: 0 10px 30px rgba(17, 153, 142, 0.4);
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.key-icon {
    width: 40px;
    height: 40px;
    color: white;
}

.title {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 8px;
    background: linear-gradient(135deg, #ffffff 0%, rgba(255, 255, 255, 0.8) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    font-size: 16px;
    color: var(--text-secondary);
    font-weight: 400;
}

/* Card Body */
.card-body {
    margin-bottom: 24px;
}

/* Info Box */
.info-box {
    background: rgba(102, 126, 234, 0.1);
    border: 1px solid rgba(102, 126, 234, 0.3);
    border-radius: 16px;
    padding: 20px;
    display: flex;
    gap: 16px;
    margin-bottom: 32px;
    transition: all 0.3s ease;
}

.info-box:hover {
    background: rgba(102, 126, 234, 0.15);
    border-color: rgba(102, 126, 234, 0.5);
    transform: translateY(-2px);
}

.info-box.success {
    background: rgba(17, 153, 142, 0.1);
    border-color: rgba(17, 153, 142, 0.3);
}

.info-box.success:hover {
    background: rgba(17, 153, 142, 0.15);
    border-color: rgba(17, 153, 142, 0.5);
}

.info-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.info-icon svg {
    width: 24px;
    height: 24px;
    color: var(--text-primary);
}

.info-text h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 4px;
}

.info-text p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Progress Container */
.progress-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 32px;
    padding: 0 10px;
}

.progress-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    position: relative;
}

.step-circle {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 16px;
    transition: all 0.3s ease;
}

.progress-step.active .step-circle {
    background: var(--primary-gradient);
    border-color: transparent;
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.4);
    animation: scaleIn 0.5s ease;
}

.progress-step.completed .step-circle {
    background: var(--success-gradient);
    border-color: transparent;
    box-shadow: 0 8px 20px rgba(17, 153, 142, 0.4);
}

@keyframes scaleIn {
    from {
        transform: scale(0.8);
    }
    to {
        transform: scale(1);
    }
}

.step-label {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 600;
}

.progress-step.active .step-label,
.progress-step.completed .step-label {
    color: var(--text-primary);
}

.progress-line {
    flex: 1;
    height: 2px;
    background: var(--border-color);
    margin: 0 8px;
    margin-bottom: 28px;
    transition: all 0.3s ease;
}

.progress-line.completed {
    background: linear-gradient(90deg, #11998e 0%, #38ef7d 100%);
}

/* Buttons */
.btn-primary {
    width: 100%;
    padding: 18px 32px;
    background: var(--primary-gradient);
    border: none;
    border-radius: 12px;
    color: white;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    transition: all 0.3s ease;
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 30px rgba(102, 126, 234, 0.4);
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary.loading {
    pointer-events: none;
    opacity: 0.7;
}

.btn-primary.loading span {
    animation: pulse 1s infinite;
}

.btn-icon {
    width: 20px;
    height: 20px;
    transition: transform 0.3s ease;
}

.btn-primary:hover .btn-icon {
    transform: translateX(4px);
}

.btn-secondary {
    width: 100%;
    padding: 14px 32px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: white;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 12px;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

/* Key Display */
.key-container {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 16px;
}

.key-label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 12px;
    font-weight: 600;
}

.key-display {
    background: rgba(0, 0, 0, 0.3);
    border: 2px solid rgba(102, 126, 234, 0.3);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 16px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.key-display::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -100%;
    width: 100%;
    height: calc(100% + 4px);
    background: linear-gradient(90deg, transparent, rgba(102, 126, 234, 0.5), transparent);
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% {
        left: -100%;
    }
    100% {
        left: 100%;
    }
}

#keyValue {
    font-size: 28px;
    font-weight: 800;
    font-family: 'Courier New', monospace;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 4px;
    position: relative;
    z-index: 1;
}

.btn-copy {
    width: 100%;
    padding: 14px 24px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: white;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.3s ease;
}

.btn-copy:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(102, 126, 234, 0.5);
}

.btn-copy.copied {
    background: var(--success-gradient);
    border-color: transparent;
}

.copy-icon {
    width: 18px;
    height: 18px;
}

/* Card Footer */
.card-footer {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.card-footer p {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Responsive */
@media (max-width: 600px) {
    .card {
        padding: 28px 24px;
    }

    .title {
        font-size: 28px;
    }

    .subtitle {
        font-size: 14px;
    }

    .step-circle {
        width: 40px;
        height: 40px;
        font-size: 14px;
    }

    .step-label {
        font-size: 10px;
    }

    .progress-line {
        margin: 0 4px;
    }

    #keyValue {
        font-size: 22px;
        letter-spacing: 2px;
    }
}