/* ===========================
   CERTIFICATE GENERATOR STYLES
   =========================== */

/* CSS Variables */
:root {
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    --success-color: #059669;
    --warning-color: #d97706;
    --danger-color: #dc2626;

    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-card: #ffffff;

    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;

    --border-color: #e2e8f0;
    --border-radius: 8px;
    --border-radius-sm: 6px;

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);

    --transition: all 0.2s ease;
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Navbar Specific */
    --primary-blue: #1a73e8;
    --border-light: #e8eaed;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-light);
    box-shadow: 0 1px 2px 0 rgba(60, 64, 67, 0.3), 0 1px 3px 1px rgba(60, 64, 67, 0.15);
    z-index: 1000;
    padding: 0.5rem 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-size: 1.25rem;
    font-weight: 600;
    color: #202124;
    text-decoration: none;
}

.nav-menu {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    font-size: 1rem;
    font-weight: 500;
    color: #5f6368;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: all 0.3s ease;
    text-decoration: none;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-blue);
    background: rgba(26, 115, 232, 0.08);
}

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

body {
    font-family: var(--font-primary);
    background: var(--bg-secondary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
}

/* Header */
.header {
    background: var(--primary-color);
    padding: 2.5rem 2rem;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
    margin-top: 60px;
    /* Offset for fixed navbar */
}

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

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: white;
    text-decoration: none;
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.15);
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
    font-weight: 500;
}

.back-link:hover {
    background: rgba(255, 255, 255, 0.25);
}

.back-link ion-icon {
    font-size: 1.1rem;
}

.header-title {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: white;
    letter-spacing: -0.025em;
}

.header-subtitle {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 400;
}

/* Main Content */
.main-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

/* Section */
.section {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    padding: 2rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.step-indicator {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.step-number {
    width: 40px;
    height: 40px;
    border-radius: var(--border-radius-sm);
    background: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 700;
    color: white;
    flex-shrink: 0;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
    letter-spacing: -0.025em;
}

.section-description {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Upload Area */
.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    padding: 3rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    background: var(--bg-tertiary);
}

.upload-area:hover {
    border-color: var(--primary-color);
    background: var(--bg-secondary);
}

.upload-content {
    pointer-events: none;
}

.upload-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.upload-content h3 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-weight: 600;
}

.upload-content p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Certificate Preview */
.certificate-preview {
    margin-top: 2rem;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    background: white;
    border: 1px solid var(--border-color);
}

#certificateCanvas {
    display: block;
    max-width: 100%;
    height: auto;
    cursor: crosshair;
}

/* Parameters Container */
.parameters-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.25rem;
    margin-bottom: 1.5rem;
}

.parameter-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    transition: var(--transition);
}

.parameter-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--primary-light);
}

.parameter-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-color);
}

.parameter-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.parameter-badge {
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.625rem;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.delete-param-btn {
    background: none;
    border: none;
    color: var(--danger-color);
    cursor: pointer;
    padding: 0.375rem;
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.delete-param-btn:hover {
    background: rgba(220, 38, 38, 0.1);
}

.delete-param-btn ion-icon {
    font-size: 1.25rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.form-input,
.form-select {
    width: 100%;
    padding: 0.625rem 0.875rem;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    font-size: 0.875rem;
    transition: var(--transition);
    font-family: var(--font-primary);
}

.form-input:focus,
.form-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-row-3 {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 1rem;
}

input[type="color"] {
    width: 50px;
    height: 38px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    background: white;
}

.style-buttons {
    display: flex;
    gap: 0.5rem;
}

.style-btn {
    flex: 1;
    padding: 0.625rem;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.style-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.style-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* Position Controls */
.position-controls {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: 1rem;
    margin-bottom: 1rem;
}

.position-controls .form-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    text-transform: none;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.position-controls .form-label ion-icon {
    font-size: 1.125rem;
}

.position-inputs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

.position-input-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.position-input-group label {
    font-weight: 600;
    color: var(--text-secondary);
    min-width: 20px;
    font-size: 0.875rem;
}

.position-input-group .position-input {
    flex: 1;
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius-sm);
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-decoration: none;
    font-family: var(--font-primary);
}

.btn-primary {
    background: var(--primary-color);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background: var(--primary-dark);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: white;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.btn ion-icon {
    font-size: 1.125rem;
}

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

/* Info Card */
.info-card {
    background: #eff6ff;
    border: 1px solid #bfdbfe;
    border-radius: var(--border-radius);
    padding: 1rem 1.25rem;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    color: var(--text-secondary);
}

.info-card ion-icon {
    font-size: 1.5rem;
    color: var(--primary-color);
    flex-shrink: 0;
    margin-top: 0.125rem;
}

.info-card strong {
    color: var(--text-primary);
}

/* Excel Preview */
.excel-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.25rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: var(--transition);
}

.stat-card:hover {
    box-shadow: var(--shadow-md);
}

.stat-card ion-icon {
    font-size: 2.25rem;
    color: var(--primary-color);
}

.stat-card h4 {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-card p {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* Column Mapping */
.column-mapping {
    display: grid;
    gap: 0.75rem;
}

.column-mapping h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.mapping-row {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.mapping-label {
    font-weight: 600;
    color: var(--text-primary);
    min-width: 150px;
    font-size: 0.875rem;
}

.mapping-arrow {
    color: var(--text-muted);
}

.mapping-value {
    flex: 1;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: 2rem;
}

/* Progress Container */
.progress-container {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
}

.progress-header {
    margin-bottom: 1.5rem;
}

.progress-header h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-weight: 600;
}

.progress-header p {
    font-size: 1.125rem;
    color: var(--primary-color);
    font-weight: 600;
}

.progress-bar-bg {
    width: 100%;
    height: 10px;
    background: var(--bg-secondary);
    border-radius: 20px;
    overflow: hidden;
    margin-bottom: 1rem;
    border: 1px solid var(--border-color);
}

.progress-bar {
    height: 100%;
    background: var(--primary-color);
    border-radius: 20px;
    transition: width 0.3s ease;
    width: 0%;
}

.progress-status {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Completion Message */
.completion-message {
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
}

.completion-message ion-icon {
    font-size: 3.5rem;
    color: var(--success-color);
    margin-bottom: 1rem;
}

.completion-message h3 {
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.completion-message p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

/* Instructions Section */
.instructions-section {
    background: var(--bg-card);
    padding: 3rem 2rem;
    border-top: 1px solid var(--border-color);
}

.instructions-container {
    max-width: 1200px;
    margin: 0 auto;
}

.instructions-title {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 2.5rem;
    color: var(--text-primary);
}

.instructions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.instruction-step {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.instruction-number {
    width: 40px;
    height: 40px;
    border-radius: var(--border-radius-sm);
    background: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 700;
    flex-shrink: 0;
}

.instruction-content h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.instruction-content p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.instructions-note {
    background: #fffbeb;
    border: 1px solid #fde68a;
    border-radius: var(--border-radius);
    padding: 1.25rem;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-top: 1.5rem;
}

.instructions-note ion-icon {
    font-size: 1.5rem;
    color: #f59e0b;
    flex-shrink: 0;
    margin-top: 0.125rem;
}

.instructions-note p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.instructions-note strong {
    color: var(--text-primary);
}

/* Template Selection Styles */
.template-toggle {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.premade-templates {
    margin-top: 1rem;
    padding: 1rem;
    background: var(--bg-tertiary);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.templates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
}

.template-item {
    cursor: pointer;
    border: 3px solid transparent;
    border-radius: var(--border-radius-sm);
    overflow: hidden;
    transition: var(--transition);
    background: white;
    padding: 5px;
    text-align: center;
}

.template-item img {
    width: 100%;
    height: auto;
    border-radius: 4px;
    margin-bottom: 5px;
    display: block;
}

.template-item span {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.template-item:hover {
    border-color: var(--primary-light);
    transform: translateY(-2px);
}

.template-item.selected {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
}

/* Footer */
.footer {
    text-align: center;
    padding: 3rem 2rem;
    color: var(--text-muted);
    font-size: 0.8125rem;
    margin-top: 2rem;
    border-top: 1px solid var(--border-color);
    background: var(--bg-white);
}

.brand-disclaimer {
    margin-top: 1rem;
    font-size: 0.75rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.7;
    line-height: 1.4;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-title {
        font-size: 1.75rem;
    }

    .header-subtitle {
        font-size: 0.9375rem;
    }

    .main-content {
        padding: 1rem;
    }

    .section {
        padding: 1.5rem;
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
    }

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

    .form-row,
    .form-row-3 {
        grid-template-columns: 1fr;
    }

    .action-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .step-indicator {
        gap: 0.75rem;
    }

    .step-number {
        width: 36px;
        height: 36px;
        font-size: 1.125rem;
    }

    .section-title {
        font-size: 1.25rem;
    }

    .excel-stats {
        grid-template-columns: 1fr;
    }
}