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

:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: #dbeafe;
    --secondary-color: #1e40af;
    --success-color: #059669;
    --error-color: #dc2626;
    --warning-color: #d97706;
    
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-input: #ffffff;
    
    --border-color: #e5e7eb;
    --border-focus: var(--primary-color);
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');

body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #1e40af 0%, #2563eb 50%, #3b82f6 100%);
    min-height: 100vh;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow: hidden;
}

.container {
    width: 100%;
    max-width: 480px;
    margin: 0 auto;
    max-height: 100vh;
    overflow-y: auto;
}

.form-wrapper {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    box-shadow: var(--shadow-lg);
    border: px solid var(--border-color);
    position: relative;
    overflow: hidden;
    margin-top: 5vh;
    margin-bottom: 18vh;
}

.header {
    text-align: center;
    margin-bottom: 2rem;
}

.logo-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.logo {
    width: 180px;
    height: auto;
    background: transparent;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    margin-bottom: 10px;
}

.logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    visibility: hidden;
}

.logo-placeholder {
    color: var(--text-light);
    font-size: 0.875rem;
    font-weight: 500;
    text-align: center;
}

h1 {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 400;
    margin: 0;
}

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

.form-group {
    position: relative;
}

.label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.label-text {
    display: inline-block;
}

.required {
    color: var(--error-color);
    margin-left: 0.25rem;
}

.info-text {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 400;
}

.warning-text {
    color: var(--warning-color);
    font-weight: 500;
}

.input {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: inherit;
    background: var(--bg-input);
    color: var(--text-primary);
    transition: var(--transition);
    outline: none;
}

.input::placeholder {
    color: var(--text-light);
    font-weight: 400;
}

.input:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.input.valid {
    border-color: var(--success-color);
}

.input.error {
    border-color: var(--error-color);
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

.phone-group {
    display: flex;
    gap: 0.5rem;
    align-items: stretch;
}

.country-code {
    position: relative;
    min-width: 120px;
    display: flex;
}

.country-select {
    width: 100%;
    padding: 0.875rem 2rem 0.875rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: inherit;
    background: var(--bg-input);
    color: var(--text-primary);
    transition: var(--transition);
    outline: none;
    cursor: pointer;
    appearance: none;
    height: 54px;
    box-sizing: border-box;
    line-height: 1.5;
}

.country-select:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.country-code::after {
    content: '▼';
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-light);
    pointer-events: none;
    font-size: 0.75rem;
}

.phone-number {
    flex: 1;
}

.error-message {
    margin-top: 0.5rem;
    color: var(--error-color);
    font-size: 0.875rem;
    font-weight: 500;
    opacity: 0;
    transform: translateY(-5px);
    transition: var(--transition);
}

.error-message.show {
    opacity: 1;
    transform: translateY(0);
}

.submit-btn {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1rem;
}

.submit-btn:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--primary-hover), var(--primary-color));
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.submit-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.submit-btn.loading .btn-text {
    opacity: 0;
}

.submit-btn.loading .loading-spinner {
    opacity: 1;
}

.loading-spinner {
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    opacity: 0;
    transition: opacity 0.3s ease;
}

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

.success-message {
    text-align: center;
    padding: 2rem;
    opacity: 0;
    transform: scale(0.9);
    transition: all 0.3s ease;
    display: none;
}

.success-message.show {
    opacity: 1;
    transform: scale(1);
    display: block;
}

.success-message.show ~ .header .logo-container .logo {
    display: none;
}

.form-wrapper.success-state .header .logo-container .logo {
    display: none;
}

.form-wrapper.success-state .header h1 {
    margin-bottom: 0;
    display: none;
}

.form-wrapper.success-state .header .subtitle {
    display: none;
}

.success-icon {
    width: 64px;
    height: 64px;
    background: var(--primary-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
}

.success-message h3 {
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.success-message p {
    color: var(--text-secondary);
    font-size: 1rem;
}

.form-group.focused .input {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

@media (max-width: 640px) {
    body {
        padding: 0.5rem;
    }
    
    .form-wrapper {
        padding: 1.5rem;
    }
    
    h1 {
        font-size: 1.5rem;
    }
    
    .phone-group {
        flex-direction: column;
        gap: 1rem;
    }
    
    .country-code {
        min-width: auto;
        max-width: auto;
    }
    
    /* Asegurar que todos los campos de código de país tengan la misma altura en móvil */
    .country-select,
    #countryCodeDisplay {
        height: 54px !important;
        padding: 0.875rem 1rem !important;
        line-height: 1.5 !important;
        box-sizing: border-box !important;
    }
    
    /* En móvil, que el campo de confirmación de código se comporte igual que el de arriba */
    #phoneConfirmationError + .phone-group .country-code,
    .form-group > label[for="phoneConfirmation"] + .phone-group .country-code {
        min-width: auto !important;
        flex-grow: 1 !important;
        flex-shrink: 1 !important;
        max-width: none !important;
        flex-basis: auto !important;
    }
}

.hidden {
    display: none;
}

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.form-wrapper {
    animation: fadeInUp 0.6s ease-out;
}

#phoneConfirmationError + .phone-group .country-code,
.form-group > label[for="phoneConfirmation"] + .phone-group .country-code {
    min-width: 90px;
    flex-grow: 0;
    flex-shrink: 0;
    max-width: 120px;
}

#phoneConfirmationError + .phone-group .country-code .country-select,
.form-group > label[for="phoneConfirmation"] + .phone-group .country-code .country-select {
    min-width: 90px;
    padding: 0.875rem 1rem !important;
    cursor: not-allowed;
    height: 54px !important;
    box-sizing: border-box !important;
    line-height: 1.5 !important;
}

/* Estilo específico para el input de confirmación del código de país */
#countryCodeDisplay {
    padding: 0.875rem 1rem !important;
    height: 54px !important;
    box-sizing: border-box !important;
    line-height: 1.5 !important;
    background-color: #f3f4f6 !important;
    color: #6b7280 !important;
    cursor: not-allowed !important;
}

#phoneConfirmationError + .phone-group .phone-number,
.form-group > label[for="phoneConfirmation"] + .phone-group .phone-number {
    flex-grow: 1;
}

/* Quitar el arrow del campo de confirmación de código de país (readonly) */
#phoneConfirmationError + .phone-group .country-code::after,
.form-group > label[for="phoneConfirmation"] + .phone-group .country-code::after {
    display: none;
}
/* Ocultar la sección de advertencia tras completar registro */
.form-wrapper.success-state .warning-section {
    display: none !important;
}