/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #1D71DA;
    --primary-dark: #155bb5;
    --primary-light: #4a9eff;
    --secondary-color: #6c757d;
    --text-dark: #1a1a1a;
    --text-light: #6c757d;
    --text-white: #ffffff;
    --bg-dark: #0a1628;
    --bg-dark-gradient: linear-gradient(135deg, #0a1628 0%, #1a2d4a 50%, #0d1f3c 100%);
    --bg-card: #ffffff;
    --bg-input: #f8f9fa;
    --border-color: #e9ecef;
    --success-color: #28a745;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.24);
    --shadow-glow: 0 0 24px rgba(29, 113, 218, 0.3);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --radius: 16px;
    --radius-sm: 8px;
}

html {
    scroll-behavior: smooth;
}

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

/* Landing Page */
.landing-page {
    min-height: 100vh;
    background: var(--bg-dark-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1.25rem;
    position: relative;
    overflow: hidden;
}

.landing-page::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 30%, rgba(29, 113, 218, 0.1) 0%, transparent 50%);
    animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

.landing-container {
    max-width: 480px;
    width: 100%;
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero-image {
    margin-bottom: 2rem;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.hero-img {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid rgba(255, 255, 255, 0.15);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
    transition: var(--transition);
}

.hero-img:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-xl), 0 0 32px rgba(29, 113, 218, 0.5);
}

.landing-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.landing-title {
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--text-white);
    margin: 0;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, #ffffff 0%, #e0e0e0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.landing-subtitle {
    font-size: 1.05rem;
    color: rgba(255, 255, 255, 0.8);
    margin: 0;
    font-weight: 400;
    letter-spacing: 0.25px;
}

.trust-indicators {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin: 1.5rem 0;
    flex-wrap: wrap;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
}

.trust-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    background: linear-gradient(135deg, var(--success-color) 0%, #1e7e34 100%);
    border-radius: 50%;
    font-size: 0.75rem;
    font-weight: 700;
    color: white;
    box-shadow: 0 2px 8px rgba(40, 167, 69, 0.3);
}

.action-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1rem;
}

.action-btn {
    width: 100%;
    padding: 1.25rem 1.5rem;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.action-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: var(--transition);
}

.action-btn:hover::before {
    left: 100%;
}

.action-btn.primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--text-white);
}

.action-btn.primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

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

.action-btn.secondary {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-white);
    border: 2px solid rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
}

.action-btn.secondary:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.25);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

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

.btn-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.btn-icon {
    font-size: 1.5rem;
}

.btn-text {
    flex: 1;
    text-align: left;
}

.btn-arrow {
    font-size: 1.25rem;
    font-weight: 700;
}

/* Container */
.container {
    max-width: 480px;
    margin: 0 auto;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--bg-dark-gradient);
}

/* Header */
.header {
    background: rgba(10, 22, 40, 0.95);
    backdrop-filter: blur(20px);
    padding: 1.5rem 1.25rem;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-md);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.logo {
    color: var(--text-white);
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-align: center;
    letter-spacing: -0.25px;
}

.progress-bar {
    background: rgba(255, 255, 255, 0.1);
    height: 4px;
    border-radius: 2px;
    overflow: hidden;
}

.progress-fill {
    background: linear-gradient(90deg, var(--primary-color) 0%, var(--primary-light) 100%);
    height: 100%;
    width: 25%;
    transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 2px;
    box-shadow: 0 0 8px rgba(29, 113, 218, 0.5);
}

/* Form Container */
.form-container {
    flex: 1;
    padding: 1.5rem 1.25rem;
    display: flex;
    flex-direction: column;
}

/* Form Steps */
.form-step {
    display: none;
    animation: fadeIn 0.4s ease;
}

.form-step.active {
    display: block;
}

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

/* Step Header */
.step-header {
    text-align: center;
    margin-bottom: 2rem;
}

.step-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 0.5rem;
}

.step-header p {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.7);
}

/* Category Grid */
.category-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.category-card {
    cursor: pointer;
    position: relative;
}

.category-card input[type="radio"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.card-content {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 1.25rem 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.card-icon {
    font-size: 2rem;
    transition: var(--transition);
}

.card-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-dark);
    text-align: center;
    transition: var(--transition);
}

.category-card input[type="radio"]:checked + .card-content {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, #f0f7ff 0%, #e8f4ff 100%);
    box-shadow: 0 8px 24px rgba(29, 113, 218, 0.15);
    transform: translateY(-2px);
}

.category-card input[type="radio"]:checked + .card-content .card-icon {
    transform: scale(1.1);
}

.category-card:hover .card-content {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: rgba(29, 113, 218, 0.4);
}

.category-card:hover .card-content .card-icon {
    transform: scale(1.05);
}

/* Amount Container */
.amount-container {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 1.75rem 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.amount-display {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.currency {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary-color);
}

.amount-input {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-dark);
    border: none;
    background: transparent;
    text-align: center;
    width: 200px;
    font-family: inherit;
}

.amount-slider {
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: var(--bg-input);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
    margin-bottom: 1rem;
}

.amount-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.amount-slider::-webkit-slider-thumb:hover {
    transform: scale(1.1);
}

.amount-slider::-moz-range-thumb {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    border: none;
    box-shadow: var(--shadow-md);
}

.amount-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-light);
}

/* Amount Options */
.amount-options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.amount-option {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
    padding: 1rem;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-dark);
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.amount-option:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.amount-option.active {
    border-color: var(--primary-color);
    background: #e8f4ff;
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

/* Personal Form */
.personal-form {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.form-group {
    margin-bottom: 1.25rem;
}

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

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
    letter-spacing: 0.25px;
}

.form-group input {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
    background: var(--bg-input);
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    background: var(--text-white);
    box-shadow: 0 0 0 3px rgba(29, 113, 218, 0.1);
}

.form-group input::placeholder {
    color: var(--text-light);
}

/* Buttons */
.btn-primary {
    width: 100%;
    padding: 1rem 1.5rem;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-white);
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: var(--transition);
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

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

.btn-secondary {
    width: 100%;
    padding: 1rem 1.5rem;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-white);
    background: rgba(255, 255, 255, 0.08);
    cursor: pointer;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-whatsapp {
    background: #25D366;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    text-decoration: none;
}

.btn-whatsapp:hover {
    background: #128C7E;
}

.step-buttons {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 0.75rem;
}

/* Success Content */
.success-content {
    text-align: center;
    padding: 2rem 1rem;
}

.success-icon {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    animation: successPop 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

@keyframes successPop {
    0% { transform: scale(0); opacity: 0; }
    100% { transform: scale(1); opacity: 1; }
}

.success-content h1 {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--text-white);
    margin-bottom: 0.75rem;
    background: linear-gradient(135deg, #ffffff 0%, #e0e0e0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.success-content > p {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 2rem;
}

.summary-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 1.75rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.summary-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1.25rem;
    padding-bottom: 0.875rem;
    border-bottom: 2px solid var(--border-color);
    text-align: left;
}

.summary-item {
    display: flex;
    justify-content: space-between;
    padding: 0.875rem 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.95rem;
}

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

.summary-item span:first-child {
    font-weight: 500;
    color: var(--text-light);
}

.summary-item span:last-child {
    font-weight: 600;
    color: var(--text-dark);
    text-align: right;
}

.success-content .btn-primary {
    margin-bottom: 0.75rem;
}

.success-content .btn-secondary {
    border-color: rgba(255, 255, 255, 0.3);
}

/* Footer */
.footer {
    background: rgba(10, 22, 40, 0.95);
    backdrop-filter: blur(20px);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: 2rem 1.25rem;
    margin-top: auto;
}

.footer-content {
    max-width: 480px;
    margin: 0 auto;
    text-align: center;
}

.footer-brand {
    margin-bottom: 1.5rem;
}

.footer-logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, #ffffff 0%, #e0e0e0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-tagline {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
    margin: 0;
}

.footer-contact {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.footer-link {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer-link:hover {
    color: var(--primary-light);
    transform: translateY(-2px);
}

.footer-icon {
    font-size: 1.1rem;
}

.footer-bottom {
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-bottom p {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.5);
    margin: 0;
}

/* Responsive Design */
@media (max-width: 380px) {
    .landing-title {
        font-size: 1.75rem;
    }
    
    .hero-img {
        width: 160px;
        height: 160px;
    }
    
    .trust-indicators {
        gap: 1rem;
    }
    
    .trust-item {
        font-size: 0.8rem;
    }
    
    .category-grid {
        grid-template-columns: 1fr;
    }
    
    .amount-options {
        grid-template-columns: 1fr;
    }
    
    .step-buttons {
        flex-direction: column;
    }
    
    .btn-secondary {
        order: -1;
    }
}

@media (max-width: 480px) {
    .landing-container {
        padding: 0 1rem;
    }
    
    .action-btn {
        padding: 1rem 1.25rem;
    }
    
    .form-container {
        padding: 1.25rem 1rem;
    }
    
    .card-content {
        padding: 1.25rem 0.875rem;
    }
    
    .amount-container {
        padding: 1.5rem 1.25rem;
    }
    
    .personal-form {
        padding: 1.25rem;
    }
}

@media (min-width: 768px) {
    .landing-container {
        max-width: 600px;
    }
    
    .category-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .amount-options {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Error States */
.form-group input.error {
    border-color: #dc3545;
}

.error-message {
    color: #dc3545;
    font-size: 0.85rem;
    margin-top: 0.25rem;
    display: none;
}

.form-group input.error + .error-message {
    display: block;
}