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

:root {
    /* Helen Pastelerías Color Palette */
    --primary-blue: #1e3a8a;
    --deep-blue: #1e40af;
    --navy-blue: #172554;
    --white: #ffffff;
    --cream: #fefce8;
    --gold: #d4af37;
    --light-gray: #f3f4f6;
    --gray: #6b7280;
    --dark-gray: #374151;
    --error-red: #dc2626;
    --success-green: #16a34a;

    /* Typography */
    --font-serif: 'Cormorant Garamond', serif;
    --font-sans: 'Montserrat', sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

html {
    -webkit-text-size-adjust: 100%;
    /* Prevent font scaling in landscape on iOS */
    -webkit-tap-highlight-color: transparent;
    /* Remove tap highlight on mobile */
}

body {
    font-family: var(--font-sans);
    background: linear-gradient(135deg, #f0f4f8 0%, #e5e9f0 100%);
    min-height: 100vh;
    color: var(--dark-gray);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    /* Better font rendering on Mac/iOS */
    -moz-osx-font-smoothing: grayscale;
    /* Better font rendering on Firefox */
    overflow-x: hidden;
    /* Prevent horizontal scroll */
}

/* ===== Header Styles ===== */
.header {
    background: var(--primary-blue);
    padding: var(--spacing-md) 0;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: center;
    align-items: center;
}

.logo-container {
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-image {
    height: 120px;
    width: auto;
    max-width: 90%;
    object-fit: contain;
    filter: brightness(0) invert(1);
    /* Makes the logo white */
    transition: transform 0.3s ease;
}

.logo-image:hover {
    transform: scale(1.05);
}

/* ===== Main Content ===== */
.main-content {
    max-width: 600px;
    margin: var(--spacing-xl) auto;
    padding: 0 var(--spacing-md);
}

.form-container {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-xl);
    position: relative;
    overflow: hidden;
}

.form-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-blue), var(--gold));
}

.form-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.form-title {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-sm);
}

.form-subtitle {
    font-family: var(--font-sans);
    font-size: 1rem;
    color: var(--gray);
    font-weight: 300;
}

/* ===== Form Styles ===== */
.registration-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-label {
    font-family: var(--font-sans);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--dark-gray);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-input {
    font-family: var(--font-sans);
    font-size: 1rem;
    padding: 0.875rem var(--spacing-md);
    border: 2px solid #e5e7eb;
    border-radius: var(--radius-md);
    background: var(--white);
    color: var(--dark-gray);
    transition: all 0.3s ease;
    outline: none;
}

.form-input:focus {
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

.form-input::placeholder {
    color: #9ca3af;
}

.form-input.error {
    border-color: var(--error-red);
}

.error-message {
    font-size: 0.875rem;
    color: var(--error-red);
    font-weight: 500;
    display: none;
    margin-top: 0.25rem;
}

.error-message.show {
    display: block;
}

/* ===== Submit Button ===== */
.submit-btn {
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 600;
    padding: 1rem var(--spacing-lg);
    background: var(--primary-blue);
    color: var(--white);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: var(--spacing-md);
    position: relative;
    overflow: hidden;
}

.submit-btn:hover {
    background: var(--deep-blue);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.submit-btn.loading {
    pointer-events: none;
    opacity: 0.7;
}

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

.btn-loader {
    display: none;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--white);
    border-radius: var(--radius-full);
    animation: spin 0.8s linear infinite;
}

.submit-btn.loading .btn-loader {
    display: block;
}

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

/* ===== Messages ===== */
.message {
    display: none;
    text-align: center;
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-lg);
    animation: slideIn 0.3s ease;
}

.message.show {
    display: block;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.success-message {
    background: #dcfce7;
    border: 2px solid var(--success-green);
    color: #166534;
}

.error-message-box {
    background: #fee2e2;
    border: 2px solid var(--error-red);
    color: #991b1b;
}

.message-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.message h3 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
}

.message p {
    font-size: 1rem;
}

/* ===== Date Picker Overlay ===== */
.date-picker-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
    animation: fadeIn 0.3s ease;
}

.date-picker-overlay.show {
    display: flex;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.date-picker-modal {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    max-width: 500px;
    width: 100%;
    animation: scaleIn 0.3s ease;
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

.date-picker-header {
    background: var(--primary-blue);
    color: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.date-picker-header h3 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 600;
}

.close-btn {
    background: transparent;
    border: none;
    color: var(--white);
    font-size: 1.5rem;
    cursor: pointer;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: background 0.2s ease;
}

.close-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

.date-picker-body {
    padding: var(--spacing-xl);
}

.date-picker-selects {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.select-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.select-group label {
    font-family: var(--font-sans);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--dark-gray);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.date-select {
    font-family: var(--font-sans);
    font-size: 1rem;
    padding: 0.75rem;
    border: 2px solid #e5e7eb;
    border-radius: var(--radius-md);
    background: var(--white);
    color: var(--dark-gray);
    cursor: pointer;
    transition: all 0.3s ease;
    outline: none;
}

.date-select:focus {
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

.confirm-date-btn {
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 600;
    padding: 1rem;
    background: var(--primary-blue);
    color: var(--white);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    width: 100%;
}

.confirm-date-btn:hover {
    background: var(--deep-blue);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

/* ===== Responsive Design ===== */

/* Tablets and small desktops */
@media (max-width: 1024px) {
    .logo-image {
        height: 100px;
    }

    .main-content {
        max-width: 550px;
    }
}

/* Tablets portrait */
@media (max-width: 768px) {
    .logo-image {
        height: 90px;
    }

    .header {
        padding: var(--spacing-sm) 0;
    }

    .form-title {
        font-size: 2rem;
    }

    .form-container {
        padding: var(--spacing-lg);
    }

    .date-picker-selects {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }

    .date-picker-header h3 {
        font-size: 1.25rem;
    }

    .date-picker-modal {
        max-width: 90%;
    }
}

/* Mobile landscape and large phones */
@media (max-width: 640px) {
    .logo-image {
        height: 75px;
    }

    .main-content {
        margin: var(--spacing-lg) auto;
        padding: 0 var(--spacing-sm);
    }

    .form-container {
        padding: var(--spacing-md);
        border-radius: var(--radius-md);
    }

    .form-title {
        font-size: 1.875rem;
    }

    .form-subtitle {
        font-size: 0.875rem;
    }

    .form-input,
    .date-select {
        font-size: 16px;
        /* Prevents zoom on iOS */
        padding: 0.875rem;
    }

    .submit-btn,
    .confirm-date-btn {
        padding: 0.875rem var(--spacing-md);
        font-size: 0.9375rem;
    }
}

/* Mobile portrait */
@media (max-width: 480px) {
    .logo-image {
        height: 65px;
    }

    .header {
        padding: 0.75rem 0;
    }

    .main-content {
        margin: var(--spacing-md) auto;
    }

    .form-container {
        padding: var(--spacing-md) var(--spacing-sm);
    }

    .form-header {
        margin-bottom: var(--spacing-lg);
    }

    .form-title {
        font-size: 1.625rem;
    }

    .form-subtitle {
        font-size: 0.8125rem;
    }

    .registration-form {
        gap: var(--spacing-md);
    }

    .form-label {
        font-size: 0.8125rem;
    }

    .date-picker-body {
        padding: var(--spacing-lg) var(--spacing-md);
    }
}

/* Small phones */
@media (max-width: 375px) {
    .logo-image {
        height: 55px;
    }

    .form-title {
        font-size: 1.5rem;
    }

    .form-container {
        padding: var(--spacing-sm);
    }

    .submit-btn,
    .confirm-date-btn {
        padding: 0.75rem var(--spacing-sm);
        font-size: 0.875rem;
    }

    .message h3 {
        font-size: 1.25rem;
    }

    .message p {
        font-size: 0.875rem;
    }
}

/* Very small phones (iPhone SE, etc.) */
@media (max-width: 320px) {
    .logo-image {
        height: 50px;
    }

    .form-title {
        font-size: 1.375rem;
    }

    .form-subtitle {
        font-size: 0.75rem;
    }

    .date-picker-header h3 {
        font-size: 1.125rem;
    }
}

/* Landscape orientation optimization */
@media (max-height: 600px) and (orientation: landscape) {
    .header {
        padding: 0.5rem 0;
    }

    .logo-image {
        height: 50px;
    }

    .main-content {
        margin: var(--spacing-sm) auto;
    }

    .form-container {
        padding: var(--spacing-md);
    }

    .form-header {
        margin-bottom: var(--spacing-md);
    }

    .form-title {
        font-size: 1.5rem;
    }

    .registration-form {
        gap: var(--spacing-sm);
    }
}

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {

    .form-input,
    .date-select,
    .submit-btn,
    .confirm-date-btn {
        min-height: 44px;
        /* Apple's recommended touch target size */
    }

    .close-btn {
        min-width: 44px;
        min-height: 44px;
    }
}