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

:root {
    --vakif-yellow: #FFD200;
    --vakif-yellow-dark: #DAAF00;
    --vakif-yellow-light: #FFF9E6;
    --vakif-red: #C8102E;
    --vakif-dark: #0A0A0A;
    --vakif-gray: #1C1C1C;
    --vakif-gray-light: #F7F7F7;
    --secondary-color: #003D82;
    --accent-blue: #0052CC;
    --success-color: #00875A;
    --warning-color: #FF991F;
    --danger-color: #DE350B;
    --light-bg: #FAFBFC;
    --card-bg: #FFFFFF;
    --border-color: #DFE1E6;
    --text-primary: #172B4D;
    --text-secondary: #5E6C84;
    --text-muted: #8993A4;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.05), 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1), 0 4px 6px rgba(0,0,0,0.05);
    --shadow-xl: 0 20px 25px rgba(0,0,0,0.1), 0 10px 10px rgba(0,0,0,0.04);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans', sans-serif;
    background: var(--light-bg);
    min-height: 100vh;
    padding: 0;
    margin: 0;
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 100%;
    margin: 0 auto;
    background: var(--light-bg);
    box-shadow: none;
    overflow: hidden;
}

/* Header */
.header {
    background: #FFFFFF;
    color: var(--text-primary);
    padding: 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.08);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-top {
    background: var(--vakif-dark);
    padding: 8px 0;
}

.header-top-content {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 48px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-links {
    display: flex;
    gap: 0;
}

.header-link {
    color: #FFFFFF;
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    padding: 8px 20px;
    transition: all 0.2s ease;
    position: relative;
    letter-spacing: 0.3px;
}

.header-link:hover {
    background: rgba(255, 210, 0, 0.15);
}

.header-link.active {
    background: var(--vakif-yellow);
    color: var(--vakif-dark);
    font-weight: 600;
}

.header-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--vakif-yellow);
}

.header-main {
    padding: 16px 0;
    background: #FFFFFF;
}

.header-main-content {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 48px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 16px;
}

.logo {
    transition: transform 0.2s ease;
    text-decoration: none;
    display: inline-block;
}

.logo:hover {
    transform: scale(1.05);
}

.logo img {
    display: block;
}

.logo svg {
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
}

.header-text h1 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 4px;
    color: var(--vakif-dark);
    letter-spacing: -0.5px;
}

.header-text p {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
    letter-spacing: 0.2px;
}

.test-credentials .badge {
    background: rgba(255, 210, 0, 0.15);
    color: var(--vakif-yellow);
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 10px;
    font-weight: 700;
    border: 1px solid rgba(255, 210, 0, 0.3);
    letter-spacing: 1px;
    text-transform: uppercase;
}

.btn-header {
    background: var(--vakif-yellow);
    color: var(--vakif-dark);
    border: none;
    padding: 10px 24px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 2px 4px rgba(255, 210, 0, 0.3);
}

.btn-header:hover {
    background: var(--vakif-yellow-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(255, 210, 0, 0.4);
}

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

/* Content Wrapper */
.content-wrapper {
    max-width: 1600px;
    margin: 24px auto;
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 24px;
    min-height: calc(100vh - 250px);
    padding: 0 48px;
}

/* Sidebar */
.sidebar {
    background: #FFFFFF;
    padding: 24px;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    overflow-y: auto;
    height: fit-content;
    position: sticky;
    top: 180px;
}

.sidebar-section {
    margin-bottom: 32px;
}

.sidebar-section:last-child {
    margin-bottom: 0;
}

.sidebar-section h3 {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 16px;
    letter-spacing: 1px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--light-bg);
}

.info-card {
    background: var(--light-bg);
    border-radius: 8px;
    padding: 16px;
    border: 1px solid var(--border-color);
}

.info-item {
    margin-bottom: 12px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.info-item:last-child {
    margin-bottom: 0;
}

.info-item label {
    font-size: 11px;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.info-value {
    font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Code', 'Courier New', monospace;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    background: white;
    padding: 8px 12px;
    border-radius: 4px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border: 1px solid var(--border-color);
}

.copy-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 16px;
    opacity: 0.5;
    transition: all 0.2s;
    padding: 4px;
}

.copy-btn:hover {
    opacity: 1;
    transform: scale(1.15);
}

.test-card {
    background: linear-gradient(135deg, var(--vakif-dark) 0%, var(--vakif-gray) 100%);
    color: white;
    padding: 16px;
    border-radius: 8px;
    margin-bottom: 12px;
    border: 1px solid rgba(255, 210, 0, 0.2);
    position: relative;
    overflow: hidden;
}

.test-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100px;
    height: 100px;
    background: var(--vakif-yellow);
    opacity: 0.1;
    border-radius: 50%;
    transform: translate(30%, -30%);
}

.test-card:last-child {
    margin-bottom: 0;
}

.card-type {
    font-size: 10px;
    margin-bottom: 12px;
    opacity: 0.7;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
}

.card-number {
    font-family: 'SF Mono', 'Monaco', 'Courier New', monospace;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 2px;
    margin-bottom: 12px;
}

.card-details {
    font-size: 11px;
    opacity: 0.7;
    font-weight: 500;
}

/* Flow Steps */
.flow-steps {
    background: var(--light-bg);
    border-radius: 8px;
    padding: 16px;
    border: 1px solid var(--border-color);
}

.flow-step {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: 6px;
    transition: all 0.2s ease;
    background: white;
}

.flow-step.active {
    background: var(--vakif-yellow);
    color: var(--vakif-dark);
    box-shadow: 0 2px 8px rgba(255, 210, 0, 0.3);
    font-weight: 600;
}

.flow-step.completed {
    background: var(--success-color);
    color: white;
    opacity: 0.9;
}

.step-number {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--light-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 13px;
    color: var(--text-secondary);
    flex-shrink: 0;
}

.flow-step.active .step-number {
    background: var(--vakif-dark);
    color: var(--vakif-yellow);
}

.flow-step.completed .step-number {
    background: rgba(255, 255, 255, 0.3);
    color: white;
}

.step-text {
    font-weight: 500;
    font-size: 13px;
}

.flow-step.active .step-text {
    font-weight: 600;
}

.flow-arrow {
    text-align: center;
    font-size: 18px;
    color: var(--text-muted);
    padding: 4px 0;
}

/* Main Panel */
.main-panel {
    overflow-y: auto;
}

.panel-section {
    background: #FFFFFF;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 32px;
    margin-bottom: 24px;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-sm);
}

.panel-section:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--vakif-yellow);
}

.panel-section.hidden {
    display: none;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--light-bg);
}

.section-header h2 {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.step-badge {
    background: var(--vakif-yellow-light);
    color: var(--vakif-dark);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    border: 1px solid var(--vakif-yellow);
}

.header-actions {
    display: flex;
    gap: 10px;
}

.btn-icon-small {
    background: var(--light-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 6px 12px;
    cursor: pointer;
    font-size: 16px;
    transition: all 0.2s;
}

.btn-icon-small:hover {
    background: var(--danger-color);
    border-color: var(--danger-color);
    transform: scale(1.1);
}

/* Transaction Selector */
.transaction-selector {
    margin-bottom: 10px;
}

.form-select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    background: white;
    cursor: pointer;
    transition: all 0.2s ease;
}

.form-select:hover {
    border-color: var(--text-muted);
}

.form-select:focus {
    outline: none;
    border-color: var(--vakif-yellow);
    box-shadow: 0 0 0 3px rgba(255, 210, 0, 0.15);
}

/* Form Grid */
.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 32px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group.full-width {
    grid-column: span 2;
}

.form-group label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
    letter-spacing: 0.2px;
}

.form-input {
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 15px;
    transition: all 0.2s ease;
    background: white;
    color: var(--text-primary);
}

.form-input:hover {
    border-color: var(--text-muted);
}

.form-input:focus {
    outline: none;
    border-color: var(--vakif-yellow);
    box-shadow: 0 0 0 3px rgba(255, 210, 0, 0.15);
    background: white;
}

/* Buttons */
.btn {
    padding: 14px 32px;
    border: none;
    border-radius: 6px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: all 0.2s ease;
    letter-spacing: 0.3px;
}

.btn-icon {
    font-size: 18px;
}

.btn-primary {
    background: var(--vakif-yellow);
    color: var(--vakif-dark);
    font-weight: 700;
    box-shadow: 0 2px 4px rgba(255, 210, 0, 0.3);
}

.btn-primary:hover {
    background: var(--vakif-yellow-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(255, 210, 0, 0.4);
}

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

.btn-secondary {
    background: var(--vakif-gray);
    color: white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
}

.btn-secondary:hover {
    background: var(--vakif-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

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

.btn-success {
    background: var(--success-color);
    color: white;
    box-shadow: 0 2px 4px rgba(0, 135, 90, 0.3);
}

.btn-success:hover {
    background: #006644;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 135, 90, 0.4);
}

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

/* 3D Secure Section */
.secure-simulation {
    margin-bottom: 32px;
}

.secure-frame {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 2px solid var(--vakif-yellow);
}

.secure-header {
    background: linear-gradient(135deg, var(--vakif-dark) 0%, var(--vakif-gray) 100%);
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    color: white;
}

.secure-lock {
    font-size: 36px;
}

.secure-header h3 {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.secure-content {
    background: var(--light-bg);
    padding: 32px;
}

.secure-content p {
    color: var(--text-primary);
    margin-bottom: 24px;
    line-height: 1.6;
}

.secure-hint {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 12px;
    font-weight: 500;
    padding: 12px;
    background: white;
    border-radius: 6px;
    border-left: 3px solid var(--warning-color);
}

/* Provision Info */
.provision-info {
    margin-bottom: 32px;
}

.info-box {
    display: flex;
    gap: 16px;
    padding: 20px 24px;
    background: rgba(0, 135, 90, 0.08);
    border: 1px solid rgba(0, 135, 90, 0.2);
    border-radius: 8px;
    border-left: 4px solid var(--success-color);
}

.info-box-icon {
    font-size: 28px;
    color: var(--success-color);
    flex-shrink: 0;
}

.info-box-content h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
    letter-spacing: -0.3px;
}

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

/* Log Container */
.log-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.log-panel {
    background: #1C1C1C;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid #2d2d2d;
}

.log-header {
    background: #2d2d2d;
    padding: 12px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid #404040;
}

.log-title {
    color: var(--vakif-yellow);
    font-weight: 600;
    font-size: 12px;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.btn-copy {
    background: transparent;
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 11px;
    cursor: pointer;
    transition: all 0.2s;
    font-weight: 600;
}

.btn-copy:hover {
    background: var(--vakif-yellow);
    color: var(--vakif-dark);
    border-color: var(--vakif-yellow);
}

.log-content {
    padding: 20px;
    color: #e8e8e8;
    font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Code', 'Courier New', monospace;
    font-size: 12px;
    line-height: 1.7;
    overflow-x: auto;
    max-height: 450px;
    overflow-y: auto;
}

/* Result Content */
.result-content {
    background: white;
    border-radius: 12px;
    padding: 32px;
    margin-bottom: 24px;
    border: 1px solid var(--border-color);
}

.result-success {
    background: rgba(0, 135, 90, 0.05);
    border: 2px solid var(--success-color);
}

.result-error {
    background: rgba(222, 53, 11, 0.05);
    border: 2px solid var(--danger-color);
}

.result-item {
    display: flex;
    justify-content: space-between;
    padding: 14px 0;
    border-bottom: 1px solid var(--border-color);
    align-items: center;
}

.result-item:last-child {
    border-bottom: none;
}

.result-label {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 14px;
    letter-spacing: 0.2px;
}

.result-value {
    font-family: 'SF Mono', 'Monaco', 'Courier New', monospace;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 14px;
    background: white;
    padding: 6px 12px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
}

/* Responsive */
@media (max-width: 1200px) {
    .content-wrapper {
        padding: 0 24px;
        margin: 16px auto;
    }

    .header-main-content,
    .header-top-content {
        padding: 0 24px;
    }
}

@media (max-width: 1024px) {
    .content-wrapper {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .sidebar {
        position: relative;
        top: 0;
    }

    .log-container {
        grid-template-columns: 1fr;
    }

    .form-grid {
        grid-template-columns: 1fr;
    }

    .form-group.full-width {
        grid-column: span 1;
    }
}

@media (max-width: 768px) {
    .content-wrapper {
        padding: 0 16px;
    }

    .header-main-content,
    .header-top-content {
        padding: 0 16px;
    }

    .header-links {
        gap: 0;
        flex-wrap: wrap;
    }

    .header-link {
        padding: 8px 12px;
        font-size: 12px;
    }

    .panel-section {
        padding: 20px;
    }

    .sidebar {
        padding: 20px;
    }
}

/* Animations */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.panel-section {
    animation: slideIn 0.3s ease-out;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--light-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 5px;
    border: 2px solid var(--light-bg);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Selection */
::selection {
    background: var(--vakif-yellow);
    color: var(--vakif-dark);
}