:root {
    --primary: #3a86ff;
    --primary-dark: #2667cc;
    --secondary: #6c63ff;
    --success: #00c853;
    --warning: #ffb347;
    --danger: #ff5a5f;
    --dark-bg: #0d1117;
    --card-bg: #161b22;
    --card-border: #30363d;
    --text-primary: #f0f6fc;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;
    --shadow: rgba(0, 0, 0, 0.25);
    --glass-bg: rgba(22, 27, 34, 0.85);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --radius: 12px;
    --radius-lg: 16px;
    --radius-sm: 8px;
}

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

body {
    background: linear-gradient(135deg, var(--dark-bg) 0%, #0a0d14 100%);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 15px;
    position: relative;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 10% 20%, rgba(58, 134, 255, 0.1) 0%, transparent 20%),
        radial-gradient(circle at 90% 80%, rgba(108, 99, 255, 0.1) 0%, transparent 20%);
    z-index: -1;
}

.container {
    width: 100%;
    max-width: 480px;
    background: var(--glass-bg);
    border-radius: var(--radius-lg);
    box-shadow: 
        0 10px 30px var(--shadow),
        0 1px 3px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
    padding: 24px;
    margin-top: 10px;
    backdrop-filter: blur(12px);
    border: 1px solid var(--card-border);
    position: relative;
    overflow: hidden;
    transform: translateY(0);
    transition: var(--transition);
    animation: containerSlideUp 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.container:hover {
    box-shadow: 
        0 15px 40px var(--shadow),
        0 1px 3px rgba(0, 0, 0, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.08);
    transform: translateY(-2px);
}

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

header {
    text-align: center;
    margin-bottom: 28px;
    position: relative;
}

h1 {
    color: var(--text-primary);
    margin-bottom: 8px;
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--text-primary), #b0b7c3);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
    max-width: 320px;
    margin: 0 auto;
}

.section {
    background: rgba(13, 17, 23, 0.6);
    border-radius: var(--radius);
    padding: 22px;
    margin-bottom: 20px;
    border: 1px solid var(--card-border);
    transition: var(--transition);
    animation: fadeIn 0.5s ease-out;
}

.section:hover {
    border-color: rgba(58, 134, 255, 0.3);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.form-group {
    margin-bottom: 20px;
    position: relative;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

label i {
    color: var(--primary);
}

.file-input-wrapper {
    position: relative;
    display: block;
    width: 100%;
}

.file-input-label {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 28px 20px;
    border: 2px dashed rgba(58, 134, 255, 0.4);
    border-radius: var(--radius-sm);
    background: rgba(22, 27, 34, 0.5);
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    min-height: 120px;
    position: relative;
    overflow: hidden;
}

.file-input-label::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(58, 134, 255, 0.1), transparent);
    transition: left 0.6s ease;
}

.file-input-label:hover::before {
    left: 100%;
}

.file-input-label.has-file {
    border-color: var(--success);
    background: rgba(0, 200, 83, 0.05);
}

.file-input-label i {
    font-size: 2rem;
    margin-bottom: 12px;
    color: var(--primary);
    transition: var(--transition);
}

.file-input-label:hover i {
    transform: translateY(-3px);
}

.file-input-label .file-text {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.file-input-label .file-hint {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 4px;
}

.file-input {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.password-container {
    position: relative;
    width: 100%;
}

.password-input {
    width: 100%;
    padding: 14px 48px 14px 16px;
    border: 1px solid rgba(58, 134, 255, 0.3);
    border-radius: var(--radius-sm);
    background: rgba(22, 27, 34, 0.7);
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition);
}

.password-input.has-value {
    border-color: var(--success);
}

.password-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(58, 134, 255, 0.2);
}

.toggle-password {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 1.1rem;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    transition: var(--transition);
}

.toggle-password:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.1);
}

.btn {
    display: block;
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 1.05rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 8px;
    position: relative;
    overflow: hidden;
}

.btn::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 0.6s ease;
}

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

.btn:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(58, 134, 255, 0.3);
}

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

.btn:disabled {
    background: var(--text-muted);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn:disabled::before {
    display: none;
}

.btn-back {
    background: linear-gradient(135deg, var(--text-muted), #5a6378);
    margin-top: 16px;
}

.btn-back:hover {
    background: linear-gradient(135deg, #5a6378, var(--text-muted));
    box-shadow: 0 8px 20px rgba(139, 148, 158, 0.2);
}

.result-title {
    font-size: 1.3rem;
    color: var(--text-primary);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    font-weight: 700;
    gap: 10px;
}

.cert-info {
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    flex-direction: column;
    animation: slideInRight 0.4s ease-out;
    animation-fill-mode: both;
}

.cert-info:nth-child(1) { animation-delay: 0.1s; }
.cert-info:nth-child(2) { animation-delay: 0.2s; }
.cert-info:nth-child(3) { animation-delay: 0.3s; }
.cert-info:nth-child(4) { animation-delay: 0.4s; }

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.cert-info:last-child {
    border-bottom: none;
}

.info-label {
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 6px;
}

.info-value {
    color: var(--text-primary);
    font-size: 1rem;
    line-height: 1.4;
    word-break: break-word;
    padding-left: 20px;
}

.status-active {
    color: var(--success);
    font-weight: 700;
}

.status-expired {
    color: var(--warning);
    font-weight: 700;
}

.status-warning {
    color: var(--warning);
    font-weight: 700;
}

.status-revoked {
    color: var(--danger);
    font-weight: 700;
}

.time-left {
    font-size: 1.3rem;
    font-weight: 800;
    display: inline-block;
    margin-right: 3px;
}

.notification {
    background: rgba(234, 179, 8, 0.1);
    border: 1px solid rgba(234, 179, 8, 0.2);
    border-radius: var(--radius-sm);
    padding: 16px;
    margin-top: 20px;
    font-size: 0.9rem;
    color: var(--warning);
    line-height: 1.5;
    animation: fadeIn 0.5s ease-out;
}

.notification.success {
    background: rgba(0, 200, 83, 0.1);
    border-color: rgba(0, 200, 83, 0.2);
    color: var(--success);
}

.link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    position: relative;
    transition: var(--transition);
}

.link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.3s ease;
}

.link:hover::after {
    width: 100%;
}

.developer-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}

.developer-link:hover {
    color: var(--secondary);
    transform: translateX(3px);
}

footer {
    margin-top: 24px;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.8rem;
    width: 100%;
    max-width: 480px;
    padding-top: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.loading {
    text-align: center;
    margin: 16px 0;
}

.spinner {
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-top: 3px solid var(--primary);
    border-radius: 50%;
    width: 48px;
    height: 48px;
    animation: spin 1s linear infinite;
    margin: 0 auto 16px;
    position: relative;
}

.spinner::after {
    content: '';
    position: absolute;
    top: -3px;
    left: -3px;
    right: -3px;
    bottom: -3px;
    border: 3px solid transparent;
    border-top: 3px solid var(--secondary);
    border-radius: 50%;
    animation: spin 1.5s linear infinite reverse;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.message {
    padding: 14px;
    border-radius: var(--radius-sm);
    margin-top: 16px;
    display: none;
    font-size: 0.9rem;
    line-height: 1.5;
    animation: slideInUp 0.3s ease-out;
    position: relative;
    overflow: hidden;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.error-message {
    background: rgba(255, 90, 95, 0.1);
    color: #ffb8b8;
    border: 1px solid rgba(255, 90, 95, 0.3);
}

.success-message {
    background: rgba(0, 200, 83, 0.1);
    color: #a8ffc3;
    border: 1px solid rgba(0, 200, 83, 0.3);
}

.progress-container {
    width: 100%;
    background: rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-sm);
    margin: 20px 0;
    overflow: hidden;
    height: 32px;
    position: relative;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2);
}

.progress-bar {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: var(--radius-sm);
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 0.95rem;
    position: relative;
    overflow: hidden;
}

.progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background-image: linear-gradient(
        45deg,
        rgba(255, 255, 255, 0.15) 25%,
        transparent 25%,
        transparent 50%,
        rgba(255, 255, 255, 0.15) 50%,
        rgba(255, 255, 255, 0.15) 75%,
        transparent 75%,
        transparent
    );
    background-size: 40px 40px;
    animation: progressShine 1s linear infinite;
}

@keyframes progressShine {
    0% {
        background-position: -40px 0;
    }
    100% {
        background-position: 0 0;
    }
}

.loading-steps {
    display: flex;
    justify-content: space-between;
    margin-top: 16px;
    font-size: 0.85rem;
    position: relative;
}

.loading-steps::before {
    content: '';
    position: absolute;
    top: 10px;
    left: 0;
    right: 0;
    height: 2px;
    background: rgba(255, 255, 255, 0.1);
    z-index: 1;
}

.loading-step {
    text-align: center;
    flex: 1;
    padding: 0 8px;
    position: relative;
    z-index: 2;
}

.loading-step-indicator {
    width: 20px;
    height: 20px;
    background: var(--text-muted);
    border-radius: 50%;
    margin: 0 auto 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 0.7rem;
    font-weight: 700;
    transition: var(--transition);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.loading-step.active .loading-step-indicator {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    transform: scale(1.1);
    box-shadow: 0 4px 8px rgba(58, 134, 255, 0.3);
}

.loading-step.completed .loading-step-indicator {
    background: var(--success);
}

.loading-step-text {
    color: var(--text-secondary);
    transition: var(--transition);
}

.loading-step.active .loading-step-text {
    color: var(--text-primary);
    font-weight: 600;
}