/* ═══════════════════════════════════════
           RESET & BASE
        ═══════════════════════════════════════ */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        :root {
            --bg-primary: #0a0a0a;
            --bg-secondary: #111111;
            --bg-elevated: #1a1a1a;
            --text-primary: #ffffff;
            --text-secondary: rgba(255, 255, 255, 0.6);
            --text-muted: rgba(255, 255, 255, 0.4);
            --border: rgba(255, 255, 255, 0.1);
            --border-hover: rgba(255, 255, 255, 0.2);
            --success: #22c55e;
            --error: #ef4444;
        }

        html {
            font-size: 16px;
        }

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            -webkit-font-smoothing: antialiased;
        }

        /* ═══════════════════════════════════════
           HEADER
        ═══════════════════════════════════════ */
        header {
            padding: 1.5rem 5%;
            border-bottom: 1px solid var(--border);
        }

        .header-inner {
            max-width: 1200px;
            margin: 0 auto;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            text-decoration: none;
            color: var(--text-primary);
        }

        .logo img {
            height: 32px;
            width: auto;
            border-radius: 6px;
        }

        .logo span {
            font-weight: 600;
            font-size: 1.1rem;
        }

        /* ═══════════════════════════════════════
           MAIN CONTENT
        ═══════════════════════════════════════ */
        main {
            flex: 1;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 3rem 1.5rem;
        }

        .container {
            width: 100%;
            max-width: 480px;
        }

        .page-title {
            font-size: 1.75rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            margin-bottom: 0.75rem;
        }

        .page-description {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin-bottom: 2.5rem;
            line-height: 1.7;
        }

        /* ═══════════════════════════════════════
           FORM
        ═══════════════════════════════════════ */
        .verify-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .input-group {
            position: relative;
        }

        .input-label {
            display: block;
            font-size: 0.8rem;
            font-weight: 500;
            color: var(--text-secondary);
            margin-bottom: 0.5rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        .input-field {
            width: 100%;
            padding: 1rem 1.25rem;
            background: var(--bg-secondary);
            border: 1px solid var(--border);
            border-radius: 10px;
            color: var(--text-primary);
            font-family: inherit;
            font-size: 1rem;
            transition: border-color 0.2s ease, background 0.2s ease;
        }

        .input-field::placeholder {
            color: var(--text-muted);
        }

        .input-field:focus {
            outline: none;
            border-color: var(--border-hover);
            background: var(--bg-elevated);
        }

        .verify-btn {
            padding: 1rem 1.5rem;
            background: var(--text-primary);
            color: var(--bg-primary);
            border: none;
            border-radius: 10px;
            font-family: inherit;
            font-size: 0.95rem;
            font-weight: 600;
            cursor: pointer;
            transition: opacity 0.2s ease, transform 0.2s ease;
        }

        .verify-btn:hover {
            opacity: 0.9;
        }

        .verify-btn:active {
            transform: scale(0.98);
        }

        .verify-btn:disabled {
            opacity: 0.5;
            cursor: not-allowed;
        }

        .verify-btn.loading {
            position: relative;
            color: transparent;
        }

        .verify-btn.loading::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 20px;
            height: 20px;
            margin: -10px 0 0 -10px;
            border: 2px solid var(--bg-primary);
            border-top-color: transparent;
            border-radius: 50%;
            animation: spin 0.8s linear infinite;
        }

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

        /* ═══════════════════════════════════════
           RESULT SECTION
        ═══════════════════════════════════════ */
        .result-section {
            margin-top: 2rem;
            display: none;
        }

        .result-section.visible {
            display: block;
            animation: fadeIn 0.3s ease;
        }

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

        .result-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 2rem;
        }

        .result-header {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            margin-bottom: 1.5rem;
            padding-bottom: 1.5rem;
            border-bottom: 1px solid var(--border);
        }

        .result-icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
        }

        .result-icon.success {
            background: rgba(34, 197, 94, 0.1);
            color: var(--success);
        }

        .result-icon.error {
            background: rgba(239, 68, 68, 0.1);
            color: var(--error);
        }

        .result-status {
            font-size: 1.1rem;
            font-weight: 600;
        }

        .result-status.success {
            color: var(--success);
        }

        .result-status.error {
            color: var(--error);
        }

        .result-details {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .detail-row {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            gap: 1rem;
        }

        .detail-label {
            font-size: 0.8rem;
            font-weight: 500;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        .detail-value {
            font-size: 0.95rem;
            color: var(--text-primary);
            text-align: right;
            word-break: break-word;
        }

        .issuer-badge {
            margin-top: 1.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border);
            text-align: center;
        }

        .issuer-text {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .issuer-name {
            font-weight: 600;
            color: var(--text-secondary);
        }

        .error-message {
            text-align: center;
            padding: 1rem 0;
        }

        .error-message p {
            color: var(--text-secondary);
            font-size: 0.95rem;
        }

        /* ═══════════════════════════════════════
           FOOTER
        ═══════════════════════════════════════ */
        footer {
            padding: 1.5rem 2rem;
            border-top: 1px solid var(--border);
            text-align: center;
        }

        footer p {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        footer a {
            color: var(--text-secondary);
            text-decoration: none;
            transition: color 0.2s ease;
        }

        footer a:hover {
            color: var(--text-primary);
        }

        /* ═══════════════════════════════════════
           RESPONSIVE
        ═══════════════════════════════════════ */
        @media (max-width: 480px) {
            .page-title {
                font-size: 1.5rem;
            }

            .result-card {
                padding: 1.5rem;
            }

            .detail-row {
                flex-direction: column;
                gap: 0.25rem;
            }

            .detail-value {
                text-align: left;
            }
        }