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

.upload-error {
    margin-top: 8px;
    font-size: 12px;
    color: var(--error-red);
    text-align: left;
}

:root {
    --primary-blue: #2563eb;
    --primary-blue-hover: #1d4ed8;
    --header-blue: #3c77d8;
    --text-dark: #1f2937;
    --text-gray: #6b7280;
    --border-color: #d1d5db;
    --bg-light: #f9fafb;
    --bg-white: #ffffff;
    --error-red: #ef4444;
    --success-green: #10b981;
    --disabled-gray: #9ca3af;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.5;
    color: var(--text-dark);
    background-color: var(--bg-light);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: var(--primary-blue);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.header {
    background-color: var(--header-blue);
    padding: 20px 32px;
}

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

.header-title {
    color: white;
    font-size: 14px;
    font-weight: 500;
}

.main {
    flex: 1;
    padding: 40px 20px;
}

.logo-section {
    text-align: center;
    margin-bottom: 40px;
}

.logo-placeholder {
    display: inline-block;
}

.logo-image {
    max-width: 200px;
    height: auto;
}

.form-container {
    max-width: 900px;
    margin: 0 auto;
    background: var(--bg-white);
    border-radius: 8px;
    border: 2px solid var(--border-color);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    overflow: hidden;
}

.form-header {
    padding: 24px 32px;
    border-bottom: 1px solid var(--border-color);
}

.form-header h1 {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-dark);
}

.carrier-form {
    padding: 32px;
}

.company-info {
    text-align: center;
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border-color);
}

.company-row {
    justify-content: center;
    max-width: 400px;
    margin: 0 auto 16px;
}

.company-row:last-child {
    margin-bottom: 0;
}

.company-row .form-group {
    text-align: left;
}

.form-subtitle {
    font-size: 18px;
    font-weight: 500;
    color: var(--text-dark);
    margin-bottom: 24px;
}

.form-fields {
    margin-bottom: 32px;
}

.form-row {
    display: flex;
    gap: 24px;
    margin-bottom: 20px;
}

.form-row:last-child {
    margin-bottom: 0;
}

.form-group {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.form-group.full-width {
    flex: 1 1 100%;
}

.form-group label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-dark);
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 4px;
}

.required {
    color: var(--error-red);
}

.form-group input {
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    transition: border-color 0.2s, box-shadow 0.2s;
    width: 100%;
    background: var(--bg-white);
}

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

.form-group input.touched:invalid:not(:focus) {
    border-color: var(--error-red);
}

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

.upload-section h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-dark);
}

.upload-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

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

.upload-group > label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    padding: 24px;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s, background-color 0.2s;
    min-height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.upload-area:hover,
.upload-area.dragover {
    border-color: var(--primary-blue);
    background-color: rgba(37, 99, 235, 0.05);
}

.upload-area.has-file {
    border-style: solid;
    border-color: var(--success-green);
    background-color: rgba(16, 185, 129, 0.05);
}

.upload-area.has-error {
    border-color: var(--error-red);
    background-color: rgba(239, 68, 68, 0.05);
}

.upload-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.upload-icon {
    width: 32px;
    height: 32px;
    color: var(--text-gray);
}

.upload-text {
    font-size: 14px;
    color: var(--text-gray);
}

.upload-link {
    color: var(--primary-blue);
    font-weight: 500;
    cursor: pointer;
}

.upload-hint {
    font-size: 12px;
    color: var(--text-gray);
}

.file-info {
    display: none;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    width: 100%;
}

.file-info:not([hidden]) {
    display: flex;
}

.file-name {
    font-size: 14px;
    color: var(--text-dark);
    word-break: break-all;
    flex: 1;
}

.remove-file {
    background: none;
    border: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background-color 0.2s, color 0.2s;
    color: var(--text-gray);
    flex-shrink: 0;
}

.remove-file svg {
    width: 14px;
    height: 14px;
}

.remove-file:hover {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--error-red);
}

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

.checkbox-group {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
    align-items: flex-start;
}

.checkbox-group:last-child {
    margin-bottom: 0;
}

.checkbox-group input[type="checkbox"] {
    width: 18px;
    height: 18px;
    margin-top: 2px;
    flex-shrink: 0;
    cursor: pointer;
    accent-color: var(--primary-blue);
}

.checkbox-group label {
    font-size: 13px;
    line-height: 1.6;
    color: var(--text-gray);
    cursor: pointer;
}

.agreement-link {
    color: var(--primary-blue);
    text-decoration: underline;
}

.submit-section {
    padding-top: 16px;
}

.submit-btn {
    background-color: var(--disabled-gray);
    color: white;
    border: none;
    padding: 12px 32px;
    font-size: 14px;
    font-weight: 500;
    border-radius: 6px;
    cursor: not-allowed;
    transition: background-color 0.2s, transform 0.1s;
}

.submit-btn:not(:disabled) {
    background-color: var(--primary-blue);
    cursor: pointer;
}

.submit-btn:not(:disabled):hover {
    background-color: var(--primary-blue-hover);
}

.submit-btn:not(:disabled):active {
    transform: scale(0.98);
}

.modal-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(17, 24, 39, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.2s ease, visibility 0.2s ease;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.modal-card {
    background: var(--bg-white);
    border-radius: 12px;
    width: min(90vw, 420px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.modal-body {
    padding: 40px 32px;
    text-align: center;
    font-size: 16px;
    color: var(--text-dark);
}

.footer {
    background-color: var(--bg-white);
    border-top: 1px solid var(--border-color);
    padding: 24px 20px;
    margin-top: auto;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    text-align: left;
}

.footer-content p {
    font-size: 12px;
    color: var(--text-gray);
    margin-bottom: 4px;
}

.footer-content p:last-child {
    margin-bottom: 0;
}

.footer-content a {
    color: var(--primary-blue);
}

@media (max-width: 768px) {
    .main {
        padding: 20px 16px;
    }

    .logo-section {
        margin-bottom: 24px;
    }

    .logo-image {
        max-width: 160px;
    }

    .form-header {
        padding: 20px 20px;
    }

    .form-header h1 {
        font-size: 20px;
    }

    .carrier-form {
        padding: 20px;
    }

    .form-subtitle {
        font-size: 16px;
    }

    .form-row {
        flex-direction: column;
        gap: 16px;
    }

    .upload-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .upload-area {
        padding: 20px;
        min-height: 100px;
    }

    .checkbox-group label {
        font-size: 12px;
    }

    .submit-btn {
        width: 100%;
    }

    .footer-content {
        text-align: center;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 10px 16px;
    }

    .header-title {
        font-size: 13px;
    }

    .form-header {
        padding: 16px;
    }

    .form-header h1 {
        font-size: 18px;
    }

    .carrier-form {
        padding: 16px;
    }

    .company-info {
        margin-bottom: 24px;
        padding-bottom: 20px;
    }

    .form-subtitle {
        font-size: 15px;
        margin-bottom: 20px;
    }

    .form-group label {
        font-size: 13px;
    }

    .form-group input {
        padding: 10px 12px;
        font-size: 16px;
    }

    .upload-section h3 {
        font-size: 15px;
    }

    .upload-area {
        padding: 16px;
    }

    .upload-icon {
        width: 28px;
        height: 28px;
    }

    .upload-text {
        font-size: 13px;
    }

    .checkbox-group {
        gap: 10px;
    }

    .checkbox-group input[type="checkbox"] {
        width: 16px;
        height: 16px;
    }

    .checkbox-group label {
        font-size: 11px;
        line-height: 1.5;
    }

    .submit-btn {
        padding: 14px 32px;
        font-size: 15px;
    }
}

@supports (-webkit-touch-callout: none) {
    .form-group input,
    .form-group input[type="text"],
    .form-group input[type="email"],
    .form-group input[type="tel"],
    .form-group input[type="number"] {
        font-size: 16px;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}