/* ===== RESET Y BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
}

body {
    color: #333;
    background: #f8f9fa;
    line-height: 1.6;
}

/* ===== HERO SECTION ===== */
.hero {
    background: linear-gradient(135deg, #525252 0%, #fff2c6 100%);
    color: white;
    padding: 40px 30px;
    text-align: center;
    height: 12rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.hero h1 {
    font-size: 2.5em;
    margin-bottom: 15px;
    animation: fadeInDown 1s;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.3);
}

.hero p {
    font-size: 1.2em;
    margin-bottom: 0;
    opacity: 0.95;
    max-width: 800px;
}

/* ===== BENEFITS SECTION ===== */
.benefits-section {
    padding: 60px 20px;
    background: white;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 25px;
    margin-top: 40px;
}

.benefit-card {
    text-align: center;
    padding: 25px 20px;
    border-radius: 12px;
    background: #f8f9fa;
    transition: all 0.3s;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.08);
}

.benefit-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
}

.benefit-card i {
    font-size: 2.5em;
    
    margin-bottom: 15px;
}

.benefit-card h3 {
    margin-bottom: 12px;
    color: #333;
    font-size: 1.2em;
}

.benefit-card p {
    color: #666;
    font-size: 0.95em;
}

/* ===== PLANS SECTION ===== */
.plans-section {
    padding: 60px 20px;
    background: linear-gradient(to bottom, #f8f9fa 0%, #e9ecef 100%);
}

.section-title {
    text-align: center;
    font-size: 2.2em;
    margin-bottom: 15px;
    color: #2c3e50;
}

.section-subtitle {
    text-align: center;
    font-size: 1.1em;
    color: #7f8c8d;
    margin-bottom: 40px;
}

.plans-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    max-width: 1200px;
    margin: 0 auto;
}

/* ===== PLAN CARD ===== */
.plan-card {
    background: white;
    border-radius: 12px;
    padding: 25px 20px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s;
    position: relative;
    border: 2px solid transparent;
    overflow: hidden;
}

.plan-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #fdffa0, #5f5f60);
    border-radius: 12px 12px 0 0;
}

.plan-card.featured {
    border: 2px solid #ff9a8f;
    transform: scale(1.03);
    position: relative;
}

.plan-card.featured::after {
    content: 'MÁS POPULAR';
    position: absolute;
    top: 12px;
    right: 12px;
    background: #333333;
    color: white;
    padding: 5px 12px;
    font-size: 0.7em;
    font-weight: bold;
    border-radius: 15px;
    z-index: 1;
    transform: none;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.plan-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 25px rgba(0, 0, 0, 0.12);
}

.plan-card.featured:hover {
    transform: scale(1.03) translateY(-8px);
}

.plan-name {
    font-size: 1.5em;
    margin-bottom: 12px;
    color: #2c3e50;
    font-weight: 600;
}

.plan-price {
    font-size: 2.2em;
    
    font-weight: bold;
    margin: 15px 0;
}

.plan-price span {
    font-size: 0.4em;
    color: #7f8c8d;
}

.plan-period {
    color: #7f8c8d;
    margin-bottom: 20px;
    font-size: 0.95em;
}

.plan-features {
    list-style: none;
    margin: 20px 0;
    text-align: left;
}

.plan-features li {
    padding: 8px 0;
    border-bottom: 1px solid #f0f0f0;
    display: flex;
    align-items: center;
    font-size: 0.9em;
}

.plan-features li i {
    color: #28a745;
    margin-right: 10px;
    font-size: 1.1em;
}

.plan-features li.premium-feature i {
    color: #ffc107;
}

.plan-btn {
    background: linear-gradient(135deg, #393939 0%, #d4d488 100%);
    color: white;
    padding: 12px 30px;
    border: none;
    border-radius: 50px;
    font-size: 1em;
    cursor: pointer;
    transition: all 0.3s;
    width: 100%;
    font-weight: 600;
}

.plan-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.plan-card.selected {
    border: 3px solid #10b981 !important;
    box-shadow: 0 8px 30px rgba(16, 185, 129, 0.3) !important;
}

.plan-card.free {
    border: 3px solid #ababab !important;
}

.plan-card.free.selected {
    border: 3px solid #10b981 !important;
}

.free-badge {
    background: #ff4d4d;
    color: white;
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 0.8em;
    font-weight: bold;
    margin-left: 5px;
}

/* ===== FORM SECTION ===== */
.form-section {
    background: #ffffff;
    padding: 50px 20px;
    position: relative;
}

.form-container {
    max-width: 950px;
    margin: 0 auto;
    background: white;
    padding: 35px 40px;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border: 1px solid #e5e7eb;
}

h3 {
    font-size: 1.15em;
    color: #111827;
    margin: 28px 0 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid #e5e7eb;
    font-weight: 700;
    position: relative;
}

h3::before {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, #fffbce, #c5adff);
    border-radius: 2px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
    color: #374151;
    font-size: 0.88em;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1.5px solid #d1d5db;
    border-radius: 8px;
    font-size: 0.93em;
    transition: all 0.3s ease;
    background: #ffffff;
    color: #111827;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #6366f1;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
    background: #fefefe;
}

.form-group input:hover:not(:focus),
.form-group select:hover:not(:focus),
.form-group textarea:hover:not(:focus) {
    border-color: #9ca3af;
}

.form-group textarea {
    min-height: 90px;
    resize: vertical;
    line-height: 1.6;
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b7280' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 12px;
    padding-right: 36px;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #9ca3af;
    opacity: 1;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 16px;
    margin-bottom: 0;
}

.form-row-auto {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 0;
}

.form-row-short {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 0;
}

.form-row-compact {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 0;
}

.form-group.w-full {
    grid-column: 1 / -1;
}

.form-group.w-half {
    max-width: 100%;
}

.form-group.w-third {
    max-width: 100%;
}

.required {
    color: #ef4444;
    font-weight: bold;
}

.submit-btn {
    background: linear-gradient(135deg, #6f6f6f 0%, #eccd5e 100%);
    color: white;
    padding: 13px 35px;
    border: none;
    border-radius: 50px;
    font-size: 1em;
    cursor: pointer;
    width: 100%;
    margin-top: 25px;
    font-weight: 700;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    box-shadow: 0 5px 18px rgba(249, 115, 22, 0.3);
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(249, 115, 22, 0.4);
}

.submit-btn:active {
    transform: translateY(-1px);
}

.submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.terms-checkbox {
    margin: 25px 0;
    padding: 15px 18px;
    background: #f3f4f6;
    border-radius: 8px;
    border-left: 4px solid #f97316;
}

.terms-checkbox label {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.88em;
    color: #374151;
    cursor: pointer;
    line-height: 1.5;
}

.terms-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: #d7d7d7;
    margin-top: 2px;
    flex-shrink: 0;
}

.terms-checkbox a {
    color: #969696;
    text-decoration: none;
    font-weight: 700;
    transition: all 0.3s ease;
}

.terms-checkbox a:hover {
    color: #626262;
    text-decoration: underline;
}

/* ===== STEP INDICATOR ===== */
.step-indicator {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 30px 0 40px;
    gap: 15px;
}

.step-item {
    display: flex;
    align-items: center;
    gap: 10px;
}

.step-circle {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: #e0e0e0;
    color: #666;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    transition: all 0.3s ease;
    font-size: 1.05em;
}

.step-circle.active {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.step-circle.completed {
    background: linear-gradient(135deg, #28a745, #20c997);
    color: white;
    box-shadow: 0 4px 12px rgba(40, 167, 69, 0.4);
}

.step-line {
    width: 80px;
    height: 3px;
    background: #e0e0e0;
    transition: all 0.3s ease;
}

.step-line.completed {
    background: linear-gradient(90deg, #28a745, #20c997);
}

.alert {
    padding: 14px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    border-left: 4px solid;
    font-size: 0.9em;
}

.alert i {
    font-size: 1.2em;
    flex-shrink: 0;
}

.alert-warning {
    background: #fff3cd;
    color: #856404;
    border-color: #ffc107;
}

.alert-info {
    background: #d1ecf1;
    color: #0c5460;
    border-color: #17a2b8;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border-color: #28a745;
}

.order-summary {
    background: linear-gradient(135deg, #f9fafb 0%, #f3f4f6 100%);
    padding: 22px;
    border-radius: 10px;
    margin-bottom: 25px;
    border: 1px solid #e5e7eb;
    box-shadow: 0 3px 12px rgba(0, 0, 0, 0.05);
}

.order-summary h2 {
    color: #111827;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.25em;
    font-weight: 700;
}

.order-summary h2 i {
    color: #6366f1;
}

.order-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    padding: 8px 0;
    border-bottom: 1px solid #e5e7eb;
    font-size: 0.9em;
}

.order-item:last-child {
    border-bottom: none;
    font-weight: 700;
    font-size: 1.05em;
    color: #6366f1;
    padding-top: 12px;
    border-top: 2px solid #e5e7eb;
}

.payment-methods {
    margin-top: 25px;
}

.payment-methods h2 {
    color: #111827;
    margin-bottom: 16px;
    font-size: 1.25em;
    font-weight: 700;
}

.method-tabs {
    display: flex;
    margin-bottom: 18px;
    border-bottom: 2px solid #e5e7eb;
    gap: 5px;
}

.method-tab {
    padding: 10px 18px;
    cursor: pointer;
    border-bottom: 3px solid transparent;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    color: #6b7280;
    font-size: 0.9em;
}

.method-tab:hover {
    background: #f9fafb;
    color: #6366f1;
}

.method-tab.active {
    border-bottom-color: #6366f1;
    color: #6366f1;
}

.method-content {
    display: none;
}

.method-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

.account-info {
    background: #f9fafb;
    padding: 16px 18px;
    border-radius: 8px;
    margin-bottom: 16px;
    border: 1px solid #e5e7eb;
}

.account-info h3 {
    margin-bottom: 10px;
    color: #111827;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 1em;
    border: none;
    padding: 0;
}

.account-detail {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    background: white;
    border-radius: 6px;
}

.copy-btn {
    background: #6366f1;
    color: white;
    border: none;
    padding: 7px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85em;
    font-weight: 600;
    transition: all 0.3s ease;
}

.copy-btn:hover {
    background: #4f46e5;
    transform: translateY(-1px);
    box-shadow: 0 3px 8px rgba(99, 102, 241, 0.3);
}

.upload-box {
    border: 2px dashed #dee2e6;
    padding: 28px;
    text-align: center;
    cursor: pointer;
    margin-bottom: 18px;
    border-radius: 10px;
    transition: all 0.3s ease;
    background: #f9fafb;
}

.upload-box:hover {
    border-color: #6366f1;
    background: #f0f7ff;
    transform: translateY(-2px);
}

.upload-box i {
    font-size: 2.8em;
    color: #6366f1;
    margin-bottom: 10px;
}

.upload-box h3 {
    color: #111827;
    margin-bottom: 6px;
    font-weight: 600;
    font-size: 1.05em;
    border: none;
    padding: 0;
}

.upload-box p {
    color: #6b7280;
    font-size: 0.85em;
}

.uploaded-file {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 14px;
    background: #f3f4f6;
    margin-bottom: 18px;
    border-radius: 8px;
    border: 1px solid #d1d5db;
}

.file-input {
    display: none;
}

.back-btn {
    background: #6c757d;
    color: white;
    border: none;
    padding: 10px 22px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
}

.back-btn:hover {
    background: #5a6268;
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(108, 117, 125, 0.3);
}

.btn-group {
    display: flex;
    gap: 12px;
    margin-top: 25px;
}

.step-header {
    text-align: center;
    margin-bottom: 25px;
}

.step-header h1 {
    color: #111827;
    font-size: 1.8em;
    font-weight: 700;
    margin-bottom: 6px;
}

.step-header h1 i {
    color: #28a745;
    margin-right: 8px;
}

.step-header p {
    color: #6b7280;
    font-size: 1em;
}

.form-loading {
    position: relative;
    opacity: 0.7;
    pointer-events: none;
}

.form-loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 28px;
    height: 28px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #6366f1;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 992px) {
    .hero h1 {
        font-size: 2em;
    }

    .plans-grid {
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    }

    .plan-card.featured {
        transform: scale(1);
    }

    .plan-card.featured:hover {
        transform: scale(1) translateY(-8px);
    }

    .form-row,
    .form-row-auto,
    .form-row-short,
    .form-row-compact {
        grid-template-columns: 1fr;
    }

    .form-container {
        padding: 30px 25px;
    }
}

@media (max-width: 768px) {
    .hero {
        height: auto;
        padding: 30px 20px;
    }

    .hero h1 {
        font-size: 1.8em;
    }

    .benefits-section {
        padding: 40px 20px;
    }

    .benefits-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .plans-section {
        padding: 40px 20px;
    }

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

    .form-section {
        padding: 40px 15px;
    }

    .form-container {
        padding: 25px 20px;
    }

    h3 {
        font-size: 1.08em;
        margin: 24px 0 14px;
    }

    .step-indicator {
        flex-wrap: wrap;
    }

    .step-line {
        width: 60px;
    }

    .method-tabs {
        flex-direction: column;
        border-bottom: none;
    }

    .method-tab {
        border-bottom: none;
        border-left: 3px solid transparent;
    }

    .method-tab.active {
        border-left-color: #6366f1;
        border-bottom: none;
    }

    .account-detail {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .copy-btn {
        align-self: flex-end;
    }

    .btn-group {
        flex-direction: column;
    }

    .back-btn {
        margin-bottom: 10px;
    }
    

}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.5em;
    }

    .section-title {
        font-size: 1.6em;
    }

    .form-container {
        padding: 20px 15px;
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 9px 12px;
        font-size: 0.9em;
    }

    .form-group label {
        font-size: 0.85em;
    }

    .submit-btn {
        padding: 12px 25px;
        font-size: 0.95em;
    }

    .step-circle {
        width: 38px;
        height: 38px;
        font-size: 0.95em;
    }

    .order-summary {
        padding: 18px;
    }

    .alert {
        padding: 12px;
        font-size: 0.85em;
    }

    h3 {
        font-size: 1.05em;
        margin: 22px 0 12px;
    }
}

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

*:focus-visible {
    outline: 3px solid #6366f1;
    outline-offset: 2px;
}

.form-group input:invalid:not(:placeholder-shown),
.form-group select:invalid,
.form-group textarea:invalid:not(:placeholder-shown) {
    border-color: #ef4444;
}

.form-group input:valid:not(:placeholder-shown),
.form-group select:valid,
.form-group textarea:valid:not(:placeholder-shown) {
    border-color: #28a745;
}

/* ===== MEDIA QUERIES ADICIONALES ===== */
@media (max-width: 992px) {
    .hero h1 {
        font-size: 2em;
        margin-bottom: 12px;
    }

    .hero p {
        font-size: 1.05em;
    }

    .benefits-section {
        padding: 50px 20px;
    }

    .benefits-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 20px;
    }

    .plans-section {
        padding: 50px 20px;
    }

    .plans-grid {
        grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
        gap: 20px;
    }

    .plan-card.featured {
        transform: scale(1);
    }

    .plan-card.featured:hover {
        transform: scale(1) translateY(-8px);
    }

    .form-section {
        padding: 40px 20px;
    }

    .form-container {
        padding: 30px 25px;
        border-radius: 12px;
    }

    .form-row,
    .form-row-auto,
    .form-row-short,
    .form-row-compact {
        grid-template-columns: 1fr;
        gap: 14px;
    }

    h3 {
        font-size: 1.12em;
        margin: 25px 0 14px;
    }

    .section-title {
        font-size: 2em;
    }

    .section-subtitle {
        font-size: 1em;
    }
}

@media (max-width: 768px) {
    .hero {
        height: auto;
        padding: 35px 20px;
    }

    .hero h1 {
        font-size: 1.75em;
        margin-bottom: 10px;
    }

    .hero p {
        font-size: 0.98em;
    }

    .benefits-section {
        padding: 40px 15px;
    }

    .benefits-grid {
        grid-template-columns: 1fr;
        gap: 18px;
    }

    .benefit-card {
        padding: 22px 18px;
    }

    .benefit-card i {
        font-size: 2.2em;
    }

    .benefit-card h3 {
        font-size: 1.1em;
    }

    .plans-section {
        padding: 40px 15px;
    }

    .plans-grid {
        grid-template-columns: 1fr;
        gap: 18px;
    }

    .plan-card {
        padding: 22px 18px;
    }

    .plan-name {
        font-size: 1.35em;
    }

    .plan-price {
        font-size: 2em;
    }

    .form-section {
        padding: 35px 15px;
    }

    .form-container {
        padding: 25px 20px;
        border-radius: 10px;
        box-shadow: 0 3px 15px rgba(0, 0, 0, 0.08);
    }

    .form-group {
        margin-bottom: 14px;
    }

    .form-group label {
        font-size: 0.86em;
        margin-bottom: 5px;
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 11px 13px;
        font-size: 0.92em;
        border-radius: 7px;
    }

    .form-group textarea {
        min-height: 85px;
    }

    h3 {
        font-size: 1.08em;
        margin: 22px 0 13px;
        padding-bottom: 8px;
    }

    h3::before {
        width: 50px;
    }

    .section-title {
        font-size: 1.8em;
        margin-bottom: 12px;
    }

    .section-subtitle {
        font-size: 0.95em;
        margin-bottom: 30px;
    }

    .submit-btn {
        padding: 13px 30px;
        font-size: 0.97em;
        letter-spacing: 0.6px;
        margin-top: 20px;
    }

    .terms-checkbox {
        padding: 14px 16px;
        margin: 20px 0;
    }

    .terms-checkbox label {
        font-size: 0.86em;
    }

    .terms-checkbox input[type="checkbox"] {
        width: 17px;
        height: 17px;
    }

    .step-indicator {
        margin: 25px 0 35px;
        flex-wrap: wrap;
        gap: 10px;
    }

    .step-circle {
        width: 40px;
        height: 40px;
        font-size: 1em;
    }

    .step-line {
        width: 50px;
        height: 2px;
    }

    .step-item span {
        font-size: 0.9em;
    }

    .step-header h1 {
        font-size: 1.6em;
    }

    .step-header p {
        font-size: 0.95em;
    }

    .alert {
        padding: 13px 15px;
        font-size: 0.88em;
        gap: 8px;
    }

    .alert i {
        font-size: 1.15em;
    }

    .order-summary {
        padding: 20px 18px;
        margin-bottom: 22px;
    }

    .order-summary h2 {
        font-size: 1.18em;
        margin-bottom: 14px;
    }

    .order-item {
        font-size: 0.88em;
        padding: 8px 0;
        margin-bottom: 8px;
    }

    .order-item:last-child {
        font-size: 1em;
        padding-top: 12px;
        margin-top: 8px;
    }

    .payment-methods h2 {
        font-size: 1.18em;
        margin-bottom: 14px;
    }

    .method-tabs {
        flex-direction: column;
        border-bottom: none;
        gap: 0;
    }

    .method-tab {
        padding: 12px 16px;
        border-bottom: none;
        border-left: 3px solid transparent;
        width: 100%;
        justify-content: flex-start;
    }

    .method-tab.active {
        border-left-color: #6366f1;
        border-bottom: none;
        background: #f9fafb;
    }

    .method-tab i {
        font-size: 1em;
    }

    .account-info {
        padding: 15px 16px;
        margin-bottom: 14px;
    }

    .account-info h3 {
        font-size: 0.98em;
        margin: 0 0 10px;
        padding: 0;
        border: none;
    }

    .account-detail {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
        padding: 10px;
    }

    .account-detail div {
        font-size: 0.9em;
    }

    .copy-btn {
        align-self: flex-end;
        padding: 7px 12px;
        font-size: 0.82em;
    }

    .upload-section h3 {
        font-size: 1.05em;
        margin-bottom: 12px;
    }

    .upload-box {
        padding: 25px 20px;
        margin-bottom: 16px;
    }

    .upload-box i {
        font-size: 2.5em;
        margin-bottom: 8px;
    }

    .upload-box h3 {
        font-size: 1em;
        margin: 0 0 6px;
        padding: 0;
        border: none;
    }

    .upload-box p {
        font-size: 0.84em;
    }

    .uploaded-file {
        padding: 10px 13px;
        margin-bottom: 16px;
        font-size: 0.88em;
    }

    .back-btn {
        padding: 11px 20px;
        font-size: 0.92em;
        border-radius: 7px;
    }

    .btn-group {
        flex-direction: column;
        gap: 10px;
        margin-top: 20px;
    }

    .btn-group .submit-btn,
    .btn-group .back-btn {
        width: 100%;
        margin: 0;
    }
    
    
}

@media (max-width: 480px) {
    .hero {
        padding: 28px 15px;
    }

    .hero h1 {
        font-size: 1.5em;
        margin-bottom: 8px;
    }

    .hero p {
        font-size: 0.92em;
    }

    .benefits-section,
    .plans-section,
    .form-section {
        padding: 30px 12px;
    }

    .section-title {
        font-size: 1.6em;
        margin-bottom: 10px;
    }

    .section-subtitle {
        font-size: 0.9em;
        margin-bottom: 25px;
    }

    .benefit-card {
        padding: 20px 16px;
    }

    .benefit-card i {
        font-size: 2em;
        margin-bottom: 12px;
    }

    .benefit-card h3 {
        font-size: 1.05em;
        margin-bottom: 10px;
    }

    .benefit-card p {
        font-size: 0.9em;
    }

    .plan-card {
        padding: 20px 16px;
    }

    .plan-name {
        font-size: 1.28em;
    }

    .plan-price {
        font-size: 1.85em;
        margin: 12px 0;
    }

    .plan-features li {
        font-size: 0.87em;
        padding: 7px 0;
    }

    .plan-btn {
        padding: 11px 25px;
        font-size: 0.95em;
    }

    .form-container {
        padding: 20px 15px;
        border-radius: 8px;
    }

    .form-group {
        margin-bottom: 13px;
    }

    .form-group label {
        font-size: 0.84em;
        margin-bottom: 5px;
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 10px 12px;
        font-size: 0.9em;
        border-radius: 6px;
    }

    .form-group textarea {
        min-height: 80px;
    }

    .form-group select {
        padding-right: 32px;
        background-size: 11px;
        background-position: right 10px center;
    }

    h3 {
        font-size: 1.05em;
        margin: 20px 0 12px;
        padding-bottom: 7px;
    }

    h3::before {
        width: 45px;
    }

    .submit-btn {
        padding: 12px 25px;
        font-size: 0.93em;
        letter-spacing: 0.5px;
        margin-top: 18px;
    }

    .terms-checkbox {
        padding: 12px 14px;
        margin: 18px 0;
        border-radius: 6px;
    }

    .terms-checkbox label {
        font-size: 0.83em;
        gap: 8px;
    }

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

    .step-indicator {
        margin: 20px 0 30px;
        gap: 8px;
    }

    .step-circle {
        width: 36px;
        height: 36px;
        font-size: 0.95em;
    }

    .step-line {
        width: 40px;
    }

    .step-item span {
        font-size: 0.85em;
    }

    .step-header h1 {
        font-size: 1.4em;
        margin-bottom: 5px;
    }

    .step-header h1 i {
        font-size: 0.9em;
    }

    .step-header p {
        font-size: 0.9em;
    }

    .alert {
        padding: 12px 13px;
        font-size: 0.85em;
        gap: 7px;
        border-radius: 6px;
    }

    .alert i {
        font-size: 1.1em;
    }

    .order-summary {
        padding: 18px 15px;
        margin-bottom: 20px;
        border-radius: 8px;
    }

    .order-summary h2 {
        font-size: 1.12em;
        margin-bottom: 12px;
    }

    .order-summary h2 i {
        font-size: 1em;
    }

    .order-item {
        font-size: 0.85em;
        padding: 7px 0;
        margin-bottom: 7px;
    }

    .order-item:last-child {
        font-size: 0.98em;
        padding-top: 10px;
        margin-top: 7px;
    }

    .free-badge {
        font-size: 0.75em;
        padding: 2px 6px;
    }

    .payment-methods {
        margin-top: 20px;
    }

    .payment-methods h2 {
        font-size: 1.12em;
        margin-bottom: 12px;
    }

    .method-tab {
        padding: 11px 14px;
        font-size: 0.88em;
    }

    .account-info {
        padding: 14px 14px;
        margin-bottom: 12px;
        border-radius: 6px;
    }

    .account-info h3 {
        font-size: 0.95em;
        margin-bottom: 8px;
    }

    .account-detail {
        padding: 9px;
        border-radius: 5px;
    }

    .account-detail div {
        font-size: 0.86em;
    }

    .account-detail span {
        font-size: 0.95em !important;
    }

    .copy-btn {
        padding: 6px 10px;
        font-size: 0.8em;
        border-radius: 5px;
    }

    .upload-section h3 {
        font-size: 1.02em;
        margin-bottom: 10px;
    }

    .upload-box {
        padding: 22px 16px;
        margin-bottom: 14px;
        border-radius: 8px;
    }

    .upload-box i {
        font-size: 2.3em;
        margin-bottom: 7px;
    }

    .upload-box h3 {
        font-size: 0.95em;
        margin-bottom: 5px;
    }

    .upload-box p {
        font-size: 0.8em;
    }

    .uploaded-file {
        padding: 9px 11px;
        margin-bottom: 14px;
        font-size: 0.85em;
        border-radius: 6px;
    }

    .uploaded-file i {
        font-size: 1.05em;
    }

    .back-btn {
        padding: 10px 18px;
        font-size: 0.9em;
        border-radius: 6px;
    }

    .btn-group {
        gap: 8px;
        margin-top: 18px;
    }

    .required {
        font-size: 0.95em;
    }

    .form-loading::after {
        width: 24px;
        height: 24px;
        border-width: 2px;
    }
}

@media (max-width: 360px) {
    .hero h1 {
        font-size: 1.35em;
    }

    .section-title {
        font-size: 1.45em;
    }

    .form-container {
        padding: 18px 12px;
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 9px 11px;
        font-size: 0.88em;
    }

    h3 {
        font-size: 1.02em;
        margin: 18px 0 11px;
    }

    .submit-btn {
        padding: 11px 20px;
        font-size: 0.9em;
    }

    .step-circle {
        width: 34px;
        height: 34px;
        font-size: 0.9em;
    }

    .order-summary,
    .account-info {
        padding: 15px 12px;
    }

    .method-tab {
        padding: 10px 12px;
        font-size: 0.85em;
    }

    .upload-box {
        padding: 20px 14px;
    }

    .upload-box i {
        font-size: 2.1em;
    }
}

@media (max-width: 768px) and (orientation: landscape) {
    .hero {
        padding: 20px 15px;
    }

    .hero h1 {
        font-size: 1.6em;
    }

    .form-section {
        padding: 30px 15px;
    }

    .form-container {
        padding: 25px 20px;
    }

    .form-row,
    .form-row-auto {
        grid-template-columns: repeat(2, 1fr);
        gap: 14px;
    }

    .form-row-short,
    .form-row-compact {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .form-group input,
    .form-group select,
    .form-group textarea,
    .submit-btn,
    .back-btn,
    .method-tab,
    .copy-btn {
        min-height: 44px;
    }

    .method-tab,
    .plan-btn {
        padding: 12px 16px;
    }

    .terms-checkbox input[type="checkbox"] {
        min-width: 20px;
        min-height: 20px;
    }
}

@media (max-width: 768px) {
    .form-group input,
    .form-group select,
    .form-group textarea {
        font-size: 16px;
    }
}