/* ============================================
   GiftOnScreen - Mobile-First Optimizations
   ============================================ */

/* ============================================
   1. VIEWPORT & BASE MOBILE STYLES
   ============================================ */

/* Enhanced mobile root variables */
:root {
    /* Mobile-optimized spacing */
    --space-mobile-1: 0.5rem;
    --space-mobile-2: 1rem;
    --space-mobile-3: 1.5rem;
    --space-mobile-4: 2rem;
    --space-mobile-5: 2.5rem;

    /* Touch-friendly sizes */
    --touch-target-min: 44px;
    --touch-target-comfortable: 48px;

    /* Mobile typography */
    --font-size-mobile-xs: 0.75rem;
    --font-size-mobile-sm: 0.875rem;
    --font-size-mobile-base: 1rem;
    --font-size-mobile-lg: 1.125rem;
    --font-size-mobile-xl: 1.25rem;
    --font-size-mobile-2xl: 1.5rem;
    --font-size-mobile-3xl: 1.875rem;
}

/* ============================================
   2. TOUCH-OPTIMIZED COMPONENTS
   ============================================ */

/* All interactive elements must have minimum touch target */
.btn,
.nav-link,
.nav-cta,
.auth-btn,
.copy-btn,
.remove-image,
.mobile-menu-btn,
.dropdown-item,
.footer-social a,
.nav-user,
.user-avatar,
.back-link,
.occasion-card,
.template-card {
    min-height: var(--touch-target-min);
    min-width: var(--touch-target-min);
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}


/* Enhanced button styles for touch */
.btn {
    padding: 0.75rem 1.5rem;
    font-size: var(--font-size-mobile-base);
    font-weight: 600;
    border-radius: var(--radius-full);
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
    user-select: none;
}

/* Primary button touch optimization */
.btn-primary {
    padding: 1rem 2rem;
    font-size: var(--font-size-mobile-lg);
}

/* Form inputs - touch friendly */
.form-input,
.form-textarea,
.form-select,
.login-modal-input {
    min-height: var(--touch-target-comfortable);
    padding: 0.875rem 1rem;
    font-size: 16px;
    /* Prevents iOS zoom */
    border-radius: var(--radius-md);
}

/* Textarea specific */
.form-textarea {
    min-height: 120px;
    line-height: 1.6;
}

/* ============================================
   3. MOBILE NAVIGATION
   ============================================ */

/* Mobile menu button */
.mobile-menu-btn {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    padding: 0.75rem;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    transition: all var(--transition-fast);
    border-radius: 2px;
}

/* Mobile menu overlay */
.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(3, 0, 20, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 999;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-mobile-4);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-smooth);
}

.mobile-menu.active {
    opacity: 1;
    visibility: visible;
}

.mobile-menu a {
    font-size: var(--font-size-mobile-2xl);
    font-weight: 600;
    color: var(--color-text-primary);
    text-decoration: none;
    padding: var(--space-mobile-2);
    min-height: var(--touch-target-comfortable);
    display: flex;
    align-items: center;
    -webkit-tap-highlight-color: transparent;
}

.mobile-menu-close {
    position: absolute;
    top: var(--space-mobile-3);
    right: var(--space-mobile-3);
    background: none;
    border: none;
    color: var(--color-text-primary);
    font-size: 2rem;
    cursor: pointer;
    min-height: var(--touch-target-min);
    min-width: var(--touch-target-min);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ============================================
   4. MOBILE-OPTIMIZED MODALS
   ============================================ */

/* Modal overlay for mobile */
.modal-overlay {
    padding: 1rem;
    align-items: flex-end;
    /* Bottom sheet style on mobile */
}

.modal-content {
    max-height: 90vh;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    margin-top: auto;
}

/* Login modal mobile */
.login-modal {
    padding: 1.5rem;
}

@media (max-width: 480px) {
    .modal-overlay {
        padding: 0;
        align-items: stretch;
    }

    .modal-content {
        border-radius: 0;
        max-height: 100vh;
    }

    .login-modal {
        padding: 1.25rem;
    }

    .login-modal-header {
        margin-bottom: 1.5rem;
    }

    .login-modal-title {
        font-size: var(--font-size-mobile-xl);
    }
}

/* ============================================
   5. TOAST NOTIFICATIONS - MOBILE
   ============================================ */

.toast-container {
    position: fixed;
    bottom: 1rem;
    left: 1rem;
    right: 1rem;
    z-index: 10001;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    pointer-events: none;
}

.toast {
    max-width: 100%;
    border-radius: var(--radius-md);
    padding: 1rem;
    pointer-events: auto;
}

@media (min-width: 640px) {
    .toast-container {
        bottom: 1.5rem;
        right: 1.5rem;
        left: auto;
        max-width: 400px;
    }
}

/* ============================================
   6. RESPONSIVE TYPOGRAPHY
   ============================================ */

/* Mobile-first typography */
.hero-title {
    font-size: clamp(2rem, 10vw, 3.5rem);
    line-height: 1.1;
}

.hero-subtitle {
    font-size: clamp(1rem, 4vw, 1.25rem);
    line-height: 1.6;
}

.section-title {
    font-size: clamp(1.75rem, 6vw, 2.5rem);
    line-height: 1.2;
}

.page-title {
    font-size: clamp(1.5rem, 5vw, 2.5rem);
    line-height: 1.2;
}

/* Body text readability */
body {
    font-size: var(--font-size-mobile-base);
    line-height: 1.6;
}

p {
    font-size: var(--font-size-mobile-base);
    line-height: 1.7;
}

/* ============================================
   7. MOBILE-OPTIMIZED GRIDS
   ============================================ */

/* Single column on mobile for all grids */
.features-grid,
.occasion-grid,
.templates-grid,
.about-content {
    grid-template-columns: 1fr;
    gap: var(--space-mobile-3);
}

/* Small tablet adjustments */
@media (min-width: 640px) {

    .features-grid,
    .occasion-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .templates-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Larger screens */
@media (min-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .templates-grid {
        grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    }

    .about-content {
        grid-template-columns: 1fr 1fr;
    }
}

/* ============================================
   8. MOBILE CARD STYLES
   ============================================ */

/* Touch-friendly cards */
.template-card,
.occasion-card,
.feature-card {
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.template-card:active,
.occasion-card:active,
.feature-card:active {
    transform: scale(0.98);
}

/* Card padding adjustments */
@media (max-width: 640px) {

    .template-card .template-info,
    .occasion-card .card-inner,
    .feature-card {
        padding: var(--space-mobile-3);
    }

    .template-preview {
        height: 160px;
    }

    .template-emoji {
        font-size: 4rem;
    }
}

/* ============================================
   9. MOBILE FORMS
   ============================================ */

/* Stack form elements on mobile */
.form-group {
    margin-bottom: var(--space-mobile-3);
}

.form-label {
    margin-bottom: var(--space-mobile-1);
    font-size: var(--font-size-mobile-sm);
}

/* Date input mobile optimization */
input[type="date"] {
    color-scheme: dark;
    min-height: var(--touch-target-comfortable);
    touch-action: manipulation;
}


input[type="date"]::-webkit-calendar-picker-indicator {
    filter: invert(1);
    cursor: pointer;
    min-height: var(--touch-target-min);
    min-width: var(--touch-target-min);
}

/* Image upload mobile */
.image-upload-area {
    min-height: 150px;
    border-radius: var(--radius-lg);
}

.upload-placeholder {
    padding: var(--space-mobile-4);
}

/* ============================================
   10. HERO SECTION MOBILE
   ============================================ */

@media (max-width: 768px) {
    .hero {
        padding: var(--space-mobile-5) 0 var(--space-mobile-4);
        min-height: auto;
    }

    .hero-content {
        padding: 0 var(--space-mobile-2);
    }

    .hero-badge {
        font-size: var(--font-size-mobile-sm);
        padding: var(--space-mobile-1) var(--space-mobile-2);
    }

    .hero-cta {
        padding: var(--space-mobile-2) var(--space-mobile-4);
        font-size: var(--font-size-mobile-lg);
    }

    /* Hide floating cards on mobile */
    .preview-card-1,
    .preview-card-2,
    .preview-card-3 {
        display: none;
    }

    /* Hide scroll indicator on mobile */
    .scroll-indicator {
        display: none;
    }
}

/* ============================================
   11. FOOTER MOBILE
   ============================================ */

@media (max-width: 768px) {
    .footer-content {
        flex-direction: column;
        gap: var(--space-mobile-4);
    }

    .footer-links {
        flex-direction: column;
        gap: var(--space-mobile-3);
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: var(--space-mobile-2);
    }

    .footer-social {
        justify-content: center;
    }
}

/* ============================================
   12. LOADING STATES - MOBILE
   ============================================ */

.loading-overlay {
    padding: var(--space-mobile-3);
}

.spinner {
    width: 40px;
    height: 40px;
}

/* Button loading states */
.btn-loading {
    position: relative;
    pointer-events: none;
}

.btn-loading .btn-text {
    visibility: hidden;
}

.btn-loading .btn-loader {
    display: inline-flex !important;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    align-items: center;
    gap: 8px;
}

/* Small spinner for buttons */
.spinner-small {
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ============================================
   13. PREVENT HORIZONTAL SCROLL
   ============================================ */

html,
body {
    overflow-x: hidden;
    width: 100%;
}

/* Ensure all images are responsive */
img {
    max-width: 100%;
    height: auto;
}

/* Ensure all videos are responsive */
video {
    max-width: 100%;
    height: auto;
}

/* Prevent overflow from wide elements */
.container,
.hero-content,
.main-content {
    max-width: 100%;
    overflow-x: hidden;
}

/* ============================================
   14. SAFE AREA INSETS (for notch devices)
   ============================================ */

@supports (padding: max(0px)) {
    .navbar {
        padding-left: max(1rem, env(safe-area-inset-left));
        padding-right: max(1rem, env(safe-area-inset-right));
    }

    .mobile-menu {
        padding-left: max(1rem, env(safe-area-inset-left));
        padding-right: max(1rem, env(safe-area-inset-right));
        padding-bottom: max(1rem, env(safe-area-inset-bottom));
    }

    .toast-container {
        padding-left: max(1rem, env(safe-area-inset-left));
        padding-right: max(1rem, env(safe-area-inset-right));
        padding-bottom: max(1rem, env(safe-area-inset-bottom));
    }
}

/* ============================================
   15. ACCESSIBILITY ENHANCEMENTS
   ============================================ */

/* Focus states for keyboard navigation */
.btn:focus-visible,
.nav-link:focus-visible,
.form-input:focus-visible,
.form-textarea:focus-visible {
    outline: 2px solid var(--color-accent-purple);
    outline-offset: 2px;
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --glass-border: rgba(255, 255, 255, 0.3);
    }

    .btn-primary {
        background: var(--color-accent-purple);
    }
}

/* ============================================
   16. PERFORMANCE OPTIMIZATIONS
   ============================================ */

/* Use will-change sparingly for animated elements */
.orb,
.template-card:hover,
.occasion-card:hover {
    will-change: transform;
}

/* Contain layout for cards */
.template-card,
.occasion-card,
.feature-card {
    contain: layout style;
}

/* Optimize backdrop-filter for performance */
.glass,
.modal-content,
.navbar.scrolled {
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
}