:root {
    /* Colores base (Tonos café/tierra del nido) */
    --nestle-blue: #634b35;
    --nestle-blue-dark: #4a3827;
    --nestle-blue-light: #e8ded3;
    --nestle-red: #634b35;
    
    /* Variables de UI */
    --bg-color: #FDFBF7;
    --surface-color: #ffffff;
    --text-primary: #3d2f21;
    --text-secondary: #7a6552;
    --border-color: #d1c5b8;
    --input-bg: #fcfbf9;
    --error-color: #c94c4c;
    --success-color: #4a6a41;
    
    /* Efectos */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 12px 48px rgba(0, 90, 156, 0.12);
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    --radius: 12px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow-x: hidden;
}

/* Background Decorations */
.page-container {
    width: 100%;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    position: relative;
}

.circle {
    position: absolute;
    border-radius: 50%;
    z-index: 0;
    filter: blur(60px);
}

.circle-1 {
    width: 300px;
    height: 300px;
    background: rgba(0, 90, 156, 0.15);
    top: -50px;
    left: -50px;
}

.circle-2 {
    width: 400px;
    height: 400px;
    background: rgba(226, 0, 26, 0.05);
    bottom: -100px;
    right: -100px;
}

/* Card Style */
.form-wrapper {
    background: var(--surface-color);
    width: 100%;
    max-width: 500px;
    border-radius: var(--radius);
    padding: 40px;
    box-shadow: var(--shadow-lg);
    z-index: 1;
    position: relative;
    overflow: hidden;
}

.form-header {
    text-align: center;
    margin-bottom: 32px;
}

.logo-container {
    margin-bottom: 36px;
    height: 60px;
}

.form-header h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--nestle-blue);
    margin-bottom: 8px;
}

.form-header p {
    font-size: 14px;
    color: var(--text-secondary);
}

/* Form Layout */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

@media (max-width: 480px) {
    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
    .form-wrapper {
        padding: 24px 20px;
    }
}

/* Inputs with Floating Labels */
.input-group {
    position: relative;
    margin-bottom: 24px;
}

.input-group input,
.input-group select {
    width: 100%;
    padding: 16px 16px 12px;
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 15px;
    color: var(--text-primary);
    transition: var(--transition);
    outline: none;
}

.input-group select {
    appearance: none;
    cursor: pointer;
}

.input-group label {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: #999;
    font-size: 15px;
    transition: var(--transition);
    pointer-events: none;
}

.select-group::after {
    content: '';
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 5px solid #999;
    pointer-events: none;
}

/* Floating Label Animation */
.input-group input:focus,
.input-group input:not(:placeholder-shown) {
    padding-top: 22px;
    padding-bottom: 6px;
    background: var(--surface-color);
    border-color: var(--nestle-blue);
    box-shadow: 0 0 0 4px var(--nestle-blue-light);
}

.input-group input:focus ~ label,
.input-group input:not(:placeholder-shown) ~ label {
    top: 12px;
    font-size: 11px;
    font-weight: 600;
    color: var(--nestle-blue);
}

.input-group select {
    padding-top: 22px;
    padding-bottom: 6px;
}

.input-group select ~ label.select-label {
    top: 12px;
    font-size: 11px;
    font-weight: 600;
}

.input-group select:focus,
.input-group select:valid {
    background: var(--surface-color);
    border-color: var(--nestle-blue);
}

.input-group select:focus ~ label.select-label,
.input-group select:valid ~ label.select-label {
    color: var(--nestle-blue);
}

/* Error states */
.input-group.error input,
.input-group.error select {
    border-color: var(--error-color);
    background: #fffafa;
}

.input-group.error input:focus,
.input-group.error select:focus {
    box-shadow: 0 0 0 4px rgba(220, 53, 69, 0.15);
}

.input-group.error label {
    color: var(--error-color) !important;
}

.error-message {
    display: none;
    color: var(--error-color);
    font-size: 12px;
    margin-top: 4px;
    position: absolute;
    bottom: -18px;
    left: 4px;
}

.input-group.error .error-message {
    display: block;
    animation: fadeIn 0.3s ease;
}

/* Checkbox */
.checkbox-group {
    margin-bottom: 32px;
    position: relative;
}

.custom-checkbox {
    display: flex;
    align-items: flex-start;
    cursor: pointer;
    user-select: none;
}

.custom-checkbox input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.checkmark {
    min-width: 20px;
    height: 20px;
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    margin-right: 12px;
    margin-top: 2px;
    position: relative;
    transition: var(--transition);
}

.custom-checkbox input:checked ~ .checkmark {
    background-color: var(--nestle-blue);
    border-color: var(--nestle-blue);
}

.checkmark:after {
    content: "";
    position: absolute;
    display: none;
    left: 6px;
    top: 2px;
    width: 4px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.custom-checkbox input:checked ~ .checkmark:after {
    display: block;
    animation: zoomIn 0.2s ease-in-out;
}

.checkbox-text {
    font-size: 13px;
    line-height: 1.5;
    color: var(--text-secondary);
}

.checkbox-text a {
    color: var(--nestle-blue);
    text-decoration: none;
    font-weight: 500;
}

.checkbox-text a:hover {
    text-decoration: underline;
}

.terms-error {
    bottom: -20px;
    left: 32px;
}

.checkbox-group.error .checkmark {
    border-color: var(--error-color);
    background: #fffafa;
}

.checkbox-group.error .terms-error {
    display: block;
}

/* Submit Button */
.submit-btn {
    width: 100%;
    padding: 16px;
    background-color: var(--nestle-blue);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}

.submit-btn:hover {
    background-color: var(--nestle-blue-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 90, 156, 0.3);
}

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

/* Loading State for Button */
.submit-btn.loading {
    background-color: var(--nestle-blue-light);
    color: transparent;
    pointer-events: none;
}

.btn-loader {
    display: none;
    width: 20px;
    height: 20px;
    border: 2px solid white;
    border-radius: 50%;
    border-top-color: transparent;
    position: absolute;
    animation: spin 0.8s linear infinite;
}

.submit-btn.loading .btn-loader {
    display: block;
    border: 2px solid var(--nestle-blue);
    border-top-color: transparent;
}

/* Success Message */
.success-message {
    text-align: center;
    padding: 20px 0;
    animation: fadeIn 0.5s ease-out;
}

.success-message.hidden {
    display: none;
}

.success-icon {
    width: 60px;
    height: 60px;
    background: var(--success-color);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto 20px;
    box-shadow: 0 4px 12px rgba(40, 167, 69, 0.3);
}

.success-icon svg {
    width: 30px;
    height: 30px;
}

.success-message h2 {
    color: var(--text-primary);
    margin-bottom: 8px;
    font-size: 22px;
}

.success-message p {
    color: var(--text-secondary);
    font-size: 15px;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-5px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes zoomIn {
    from { opacity: 0; transform: rotate(45deg) scale(0.5); }
    to { opacity: 1; transform: rotate(45deg) scale(1); }
}

@keyframes spin {
    to { transform: rotate(360deg); }
}