:root {
    --primary: #1a2b4a;
    --secondary: #f57c20;
    --btn-color: #f57c20;
    --bg: #f4f5f7;
    --card: #ffffff;
    --text: #333333;
    --text-light: #666666;
    --border: #e0e0e0;
    --success: #28a745;
    --danger: #dc3545;
    --radius: 10px;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

/* Header */
.header {
    background: #ffffff;
    padding: 20px 0;
    text-align: center;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    border-bottom: 3px solid var(--secondary);
}
.header img { max-height: 50px; }
.header h1 { color: var(--primary); font-size: 1.1rem; margin-top: 8px; font-weight: 400; letter-spacing: 0.5px; }

/* Container */
.container { max-width: 860px; margin: 0 auto; padding: 30px 20px 60px; }

/* Intro */
.intro-card {
    background: var(--card);
    border-radius: var(--radius);
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    border-left: 4px solid var(--secondary);
}
.intro-card h2 { color: var(--primary); margin-bottom: 10px; font-size: 1.3rem; }
.intro-card p { color: var(--text-light); font-size: 0.95rem; }

/* Progress Bar */
.progress-wrapper {
    background: var(--card);
    border-radius: var(--radius);
    padding: 20px 30px;
    margin-bottom: 30px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    position: sticky;
    top: 90px;
    z-index: 50;
}
.progress-bar-outer {
    background: #e9ecef;
    border-radius: 20px;
    height: 10px;
    overflow: hidden;
}
.progress-bar-inner {
    background: linear-gradient(90deg, var(--secondary), #ff9a44);
    height: 100%;
    border-radius: 20px;
    transition: width 0.4s ease;
    width: 0%;
}
.progress-text {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--text-light);
    margin-top: 8px;
}

/* Step Indicator */
.step-indicators {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 12px;
}
.step-dot {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: #e9ecef;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.65rem;
    font-weight: 600;
    color: var(--text-light);
    cursor: pointer;
    transition: all 0.3s;
}
.step-dot.active { background: var(--secondary); color: #fff; }
.step-dot.completed { background: var(--success); color: #fff; }

/* Form Sections */
.form-section {
    background: var(--card);
    border-radius: var(--radius);
    padding: 35px;
    margin-bottom: 20px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    display: none;
    animation: fadeIn 0.3s ease;
}
.form-section.active { display: block; }

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

.section-title {
    color: var(--primary);
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 5px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--secondary);
}
.section-subtitle {
    color: var(--text-light);
    font-size: 0.85rem;
    margin-bottom: 25px;
    margin-top: 5px;
}

/* Form Elements */
.form-group { margin-bottom: 20px; }
.form-group label {
    display: block;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 6px;
    color: var(--text);
}
.form-group label .required { color: var(--danger); margin-left: 2px; }
.form-group .helper {
    font-size: 0.78rem;
    color: var(--text-light);
    margin-top: 4px;
    font-style: italic;
}

input[type="text"],
input[type="email"],
input[type="url"],
input[type="tel"],
input[type="date"],
input[type="number"],
input[type="password"],
select,
textarea {
    width: 100%;
    padding: 12px 14px;
    border: 1.5px solid var(--border);
    border-radius: 8px;
    font-size: 0.92rem;
    font-family: inherit;
    transition: border-color 0.2s, box-shadow 0.2s;
    background: #fff;
}
input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--secondary);
    box-shadow: 0 0 0 3px rgba(245,124,32,0.12);
}
textarea { min-height: 100px; resize: vertical; }

/* Other text field */
.other-text-wrapper input {
    border: 1.5px dashed var(--secondary);
    background: rgba(245,124,32,0.03);
}

/* Checkbox & Radio */
.checkbox-group, .radio-group { display: flex; flex-wrap: wrap; gap: 10px; }
.checkbox-item, .radio-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    border: 1.5px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 0.88rem;
}
.checkbox-item:hover, .radio-item:hover { border-color: var(--secondary); }
.checkbox-item input:checked + span,
.radio-item input:checked + span { font-weight: 600; }
.checkbox-item:has(input:checked),
.radio-item:has(input:checked) {
    border-color: var(--secondary);
    background: rgba(245,124,32,0.06);
}
.checkbox-item input, .radio-item input { accent-color: var(--secondary); }

/* Dynamic Fields */
.dynamic-fields { margin-top: 10px; }
.dynamic-field {
    display: flex;
    gap: 8px;
    margin-bottom: 8px;
    align-items: center;
}
.dynamic-field input { flex: 1; }
.btn-remove-field {
    background: var(--danger);
    color: #fff;
    border: none;
    width: 34px;
    height: 34px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.btn-add-field {
    background: none;
    border: 1.5px dashed var(--secondary);
    color: var(--secondary);
    padding: 8px 16px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
    margin-top: 6px;
    transition: all 0.2s;
}
.btn-add-field:hover { background: rgba(245,124,32,0.06); }

/* Access Info Box */
.info-box {
    background: linear-gradient(135deg, rgba(26,43,74,0.04), rgba(245,124,32,0.06));
    border: 1.5px solid var(--secondary);
    border-radius: 8px;
    padding: 16px 20px;
    margin-bottom: 20px;
    font-size: 0.9rem;
}
.info-box strong { color: var(--primary); }
.info-box .email-highlight {
    color: var(--secondary);
    font-weight: 700;
}

/* Buttons */
.btn {
    padding: 12px 28px;
    border: none;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    font-family: inherit;
}
.btn-primary {
    background: var(--btn-color);
    color: #fff;
}
.btn-primary:hover { filter: brightness(1.1); transform: translateY(-1px); }
.btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
}
.btn-outline:hover { background: var(--primary); color: #fff; }

.nav-buttons {
    display: flex;
    justify-content: space-between;
    margin-top: 30px;
    gap: 12px;
}

/* File Upload */
.file-upload-area {
    border: 2px dashed var(--border);
    border-radius: 8px;
    padding: 30px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
}
.file-upload-area:hover { border-color: var(--secondary); background: rgba(245,124,32,0.03); }
.file-upload-area .icon { font-size: 2rem; color: var(--secondary); margin-bottom: 8px; }
.file-upload-area p { font-size: 0.85rem; color: var(--text-light); }
.file-list { margin-top: 12px; }
.file-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    background: var(--bg);
    border-radius: 6px;
    margin-bottom: 6px;
    font-size: 0.85rem;
}
.file-item .remove-file { color: var(--danger); cursor: pointer; font-weight: 700; }

/* Thank You Page */
.thankyou-card {
    background: var(--card);
    border-radius: var(--radius);
    padding: 50px 40px;
    text-align: center;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
    max-width: 600px;
    margin: 40px auto;
}
.thankyou-card .icon { font-size: 3.5rem; color: var(--success); margin-bottom: 15px; }
.thankyou-card h2 { color: var(--primary); margin-bottom: 15px; }
.thankyou-card p { color: var(--text-light); }

/* Footer */
.footer {
    text-align: center;
    padding: 20px;
    font-size: 0.8rem;
    color: var(--text-light);
}

/* Responsive */
@media (max-width: 768px) {
    .container { padding: 15px 12px 40px; }
    .form-section { padding: 22px 18px; }
    .intro-card { padding: 20px; }
    .checkbox-group, .radio-group { flex-direction: column; }
    .nav-buttons { flex-direction: column; }
    .nav-buttons .btn { width: 100%; text-align: center; }
    .progress-wrapper { padding: 14px 18px; top: 80px; }
    .step-indicators { gap: 4px; }
    .step-dot { width: 24px; height: 24px; font-size: 0.58rem; }
}

/* Form Validation */
input.invalid, select.invalid, textarea.invalid {
    border-color: var(--danger);
    box-shadow: 0 0 0 3px rgba(220,53,69,0.1);
}
.error-message {
    color: var(--danger);
    font-size: 0.78rem;
    margin-top: 4px;
}
.checkbox-group.invalid-group {
    border: 1px solid var(--danger);
    border-radius: var(--radius);
    padding: 8px;
    box-shadow: 0 0 0 3px rgba(220,53,69,0.1);
}

/* Loading overlay */
.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(255,255,255,0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    display: none;
}
.loading-overlay.active { display: flex; }
.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--border);
    border-top-color: var(--secondary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Platform Selector */
.platform-selector .intro-card { text-align: center; }
.platform-options {
    display: flex;
    gap: 24px;
    justify-content: center;
    margin-top: 0;
}
.platform-card {
    background: var(--card);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    padding: 40px 30px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    flex: 1;
    max-width: 360px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.platform-card:hover {
    border-color: var(--secondary);
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}
.platform-card.selected {
    border-color: var(--secondary);
    background: rgba(245,124,32,0.04);
}
.platform-icon { margin-bottom: 16px; }
.platform-icon svg { width: 48px; height: 48px; }
.platform-card h3 {
    color: var(--primary);
    font-size: 1.2rem;
    margin-bottom: 8px;
}
.platform-card p {
    color: var(--text-light);
    font-size: 0.88rem;
    margin: 0;
}
@media (max-width: 600px) {
    .platform-options { flex-direction: column; align-items: center; }
    .platform-card { max-width: 100%; width: 100%; padding: 30px 20px; }
}

/* Platform badge in header */
.platform-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-left: 8px;
    vertical-align: middle;
}
.platform-badge-google { background: #e8f0fe; color: #1a73e8; }
.platform-badge-facebook { background: #e7f0fd; color: #1877F2; }

/* Row helpers */
.form-row { display: flex; gap: 16px; }
.form-row .form-group { flex: 1; }
@media (max-width: 600px) {
    .form-row { flex-direction: column; gap: 0; }
}