/* Custom styles for the Trademark Validator app - Apple-inspired Design */

/* Animation keyframes */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.01); }
    100% { transform: scale(1); }
}

@keyframes shimmer {
    0% { background-position: -100% 0; }
    100% { background-position: 100% 0; }
}

/* Smooth slide-right animation */
@keyframes slideInRight {
    from {
        transform: translateX(-20px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Apple-inspired Theme Colors */
:root {
    /* Apple-inspired base colors */
    --apple-bg: #fbfbfd;           /* Apple light background */
    --apple-bg-alt: #f5f5f7;       /* Slightly darker background for alternating sections */
    --apple-dark-bg: #1d1d1f;      /* Apple dark background for dark sections */
    --apple-dark-bg-alt: #2d2d2f;  /* Slightly lighter dark background */
    --apple-card-bg: #ffffff;      /* Clean white for cards */
    --apple-dark-card-bg: #0a0a0a; /* Nearly black for dark cards */
    
    /* Apple's UI borders and dividers */
    --apple-border: rgba(0, 0, 0, 0.1);
    --apple-dark-border: rgba(255, 255, 255, 0.1);
    
    /* Apple's primary blue accent */
    --apple-blue: #0071e3;
    --apple-blue-hover: #0077ed;
    --apple-blue-active: #0061c2;
    
    /* Apple's secondary gray accent */
    --apple-gray: #86868b;
    --apple-light-gray: #e8e8ed;
    --apple-dark-gray: #424245;
    
    /* Apple's text colors */
    --apple-text: #1d1d1f;
    --apple-text-secondary: #515154;
    --apple-text-tertiary: #86868b;
    --apple-dark-text: #f5f5f7;
    --apple-dark-text-secondary: rgba(245, 245, 247, 0.8);
    --apple-dark-text-tertiary: rgba(245, 245, 247, 0.6);
    
    /* Status indicators - Apple style */
    --apple-success: #00c853;      /* Apple green */
    --apple-warning: #ff9500;      /* Apple orange */
    --apple-danger: #ff3b30;       /* Apple red */
    
    /* Apple's subtle shadows */
    --apple-shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --apple-shadow: 0 4px 8px rgba(0, 0, 0, 0.08);
    --apple-shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.12);
    --apple-shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.15);
    
    /* Dark mode shadows */
    --apple-dark-shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.2);
    --apple-dark-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    --apple-dark-shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.4);
    
    /* Modern blur effects */
    --apple-backdrop-blur: blur(20px);
    --apple-backdrop-saturate: saturate(180%);
    
    /* Applying our theme to standard variables */
    --dark-primary: var(--apple-dark-bg);
    --dark-secondary: var(--apple-dark-bg-alt);
    --dark-surface: #1a1a1c;
    --dark-elevated: #222224;
    --dark-border: var(--apple-dark-border);
    
    --text-primary: var(--apple-dark-text);
    --text-secondary: var(--apple-dark-text-secondary);
    --text-tertiary: var(--apple-dark-text-tertiary);
    
    --dark-accent: var(--apple-blue);
    --dark-accent-hover: var(--apple-blue-hover);
    
    --success-color: var(--apple-success);
    --warning-color: var(--apple-warning);
    --danger-color: var(--apple-danger);
    
    --box-shadow-sm: var(--apple-dark-shadow-sm);
    --box-shadow: var(--apple-dark-shadow);
    --box-shadow-lg: var(--apple-dark-shadow-lg);
}

/* Apply Apple-inspired theme to main elements */
body {
    background: var(--dark-primary);
    color: var(--text-primary);
    min-height: 100vh;
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'SF Pro Display', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    letter-spacing: -0.015rem; /* Apple's negative letter-spacing */
    line-height: 1.5;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: all 0.3s ease;
}

.navbar {
    background-color: rgba(29, 29, 31, 0.85) !important; /* Semi-transparent like Apple */
    backdrop-filter: var(--apple-backdrop-blur);
    -webkit-backdrop-filter: var(--apple-backdrop-blur);
    box-shadow: none;
    border-bottom: 1px solid var(--dark-border);
    padding: 0.8rem 1rem;
    position: sticky;
    top: 0;
    z-index: 1020;
    transition: all 0.3s ease;
}

.navbar-brand {
    font-weight: 500;
    font-size: 1.25rem;
    letter-spacing: -0.02rem;
}

.nav-link {
    font-weight: 400;
    opacity: 0.85;
    transition: opacity 0.2s ease;
}

.nav-link:hover {
    opacity: 1;
}

.card {
    background-color: var(--dark-secondary);
    border: none;
    border-radius: 12px; /* Apple's rounded corners */
    box-shadow: var(--box-shadow-sm);
    transition: all 0.3s ease;
    overflow: hidden;
    margin-bottom: 1.5rem;
    transform: translateZ(0); /* Enable hardware acceleration */
}

.card:hover {
    box-shadow: var(--box-shadow);
    transform: translateY(-2px) scale(1.005); /* Subtle raise effect */
}

.card-header {
    background-color: rgba(45, 45, 47, 0.5);
    border-bottom: 1px solid var(--dark-border);
    font-weight: 500;
    letter-spacing: -0.02rem; /* Apple's spacing */
    padding: 1rem 1.25rem;
}

.list-group-item {
    background-color: var(--dark-secondary);
    border-color: var(--dark-border);
    color: var(--text-primary);
    transition: all 0.2s ease;
    padding: 0.75rem 1rem;
    border-left: 0;
    border-right: 0;
}

.list-group-item:hover {
    background-color: var(--dark-elevated);
}

.nav-tabs {
    border: none;
    margin-bottom: 1rem;
}

.nav-tabs .nav-link {
    color: var(--text-secondary);
    border: none;
    border-radius: 0;
    padding: 0.75rem 1.25rem;
    font-weight: 400;
    transition: all 0.2s ease;
    position: relative;
}

.nav-tabs .nav-link:hover {
    color: var(--text-primary);
    background-color: transparent;
}

.nav-tabs .nav-link.active {
    background: transparent;
    color: var(--text-primary);
    font-weight: 500;
}

.nav-tabs .nav-link.active::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--dark-accent);
}

.tab-content {
    background-color: var(--dark-secondary);
    border: none;
    border-radius: 0;
    padding: 1.5rem 0;
}

.form-control {
    background-color: rgba(45, 45, 47, 0.5); /* Semi-transparent Apple-style input */
    border: 1px solid var(--dark-border);
    color: var(--text-primary);
    border-radius: 8px; /* Apple's rounded corners */
    padding: 0.8rem 1rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); /* Apple's smooth transitions */
    font-size: 0.95rem;
    letter-spacing: -0.01em; /* Apple's letter spacing */
}

.form-control:focus {
    background-color: rgba(50, 50, 52, 0.7); /* Slightly lighter on focus */
    color: var(--text-primary);
    border-color: var(--apple-blue);
    box-shadow: 0 0 0 2px rgba(0, 113, 227, 0.2); /* Apple's subtle focus glow */
    outline: none;
}

/* Apple-style placeholder text */
.form-control::placeholder {
    color: rgba(255, 255, 255, 0.4);
    font-weight: 300;
    letter-spacing: -0.01em;
}

/* Keep the traffic light colors for matches and differences */
.text-success {
    color: var(--success-color) !important;
}

.text-warning {
    color: var(--warning-color) !important;
}

.text-danger {
    color: var(--danger-color) !important;
}

.bg-success {
    background-color: var(--success-color) !important;
}

.bg-warning {
    background-color: var(--warning-color) !important;
}

.bg-danger {
    background-color: var(--danger-color) !important;
}

.border-success {
    border-color: var(--success-color) !important;
}

.border-warning {
    border-color: var(--warning-color) !important;
}

.border-danger {
    border-color: var(--danger-color) !important;
}

/* Buttons and interactive elements - Apple-inspired style */
.btn {
    font-weight: 400;
    letter-spacing: -0.01rem; /* Apple's signature letter spacing */
    padding: 0.625rem 1.25rem;
    border-radius: 980px; /* Apple's pill-shaped buttons */
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); /* Apple's smooth transitions */
    text-transform: none;
    box-shadow: none;
    position: relative;
    font-size: 0.95rem;
}

.btn-primary {
    background-color: var(--apple-blue);
    border: none;
    color: white;
}

.btn-primary:hover, .btn-primary:focus {
    background-color: var(--apple-blue-hover);
    box-shadow: 0 0 0 2px rgba(0, 113, 227, 0.1); /* Apple's subtle focus glow */
    transform: translateY(-1px);
}

.btn-primary:active {
    background-color: var(--apple-blue-active);
    transform: translateY(0);
}

.btn-secondary {
    background-color: rgba(255, 255, 255, 0.05); /* Apple's glass effect */
    backdrop-filter: var(--apple-backdrop-blur);
    -webkit-backdrop-filter: var(--apple-backdrop-blur);
    border: 1px solid var(--dark-border);
    color: var(--text-primary);
}

.btn-secondary:hover, .btn-secondary:focus {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: var(--dark-border);
    transform: translateY(-1px);
}

.btn-secondary:active {
    background-color: rgba(255, 255, 255, 0.07);
    transform: translateY(0);
}

.btn-outline-secondary {
    color: var(--text-primary);
    border: 1px solid var(--dark-border);
    background-color: transparent;
}

.btn-outline-secondary:hover {
    background-color: rgba(255, 255, 255, 0.05);
    border-color: var(--text-secondary);
    color: var(--text-primary);
}

.btn-outline-secondary:active {
    background-color: rgba(255, 255, 255, 0.03);
}

/* Badge styling - Apple-inspired */
.badge {
    font-weight: 500;
    padding: 0.45em 0.9em;
    border-radius: 980px; /* Apple's pill-shaped design */
    letter-spacing: -0.01em; /* Apple's signature letter spacing */
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    font-size: 0.75rem;
    text-transform: none;
}

/* Apple-style large badge */
.badge-lg {
    padding: 0.6em 1.2em;
    font-size: 0.85rem;
}

/* Apple-inspired badge colors */
.bg-primary, .badge-primary {
    background-color: var(--apple-blue) !important;
    color: white !important;
}

.bg-success, .badge-success {
    background-color: var(--apple-success) !important;
    color: white !important;
}

.bg-warning, .badge-warning {
    background-color: var(--apple-warning) !important;
    color: #2c2c2e !important; /* Dark text for better contrast on yellow */
}

.bg-danger, .badge-danger {
    background-color: var(--apple-danger) !important;
    color: white !important;
}

/* Apple-style ghost badges */
.badge-ghost {
    background-color: rgba(255, 255, 255, 0.08);
    color: var(--text-secondary);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Ad container styling */
.ad-container-top,
.ad-container-middle,
.ad-container-bottom,
.ad-container-sidebar {
    min-height: 90px;
    background: rgba(44, 53, 57, 0.3); /* Gunmetal gray background */
    border-radius: 10px;
    border: 1px dashed var(--dark-border);
    transition: all 0.3s ease;
    box-shadow: var(--box-shadow-sm);
}

.ad-container-sidebar {
    min-height: 600px; /* For vertical sidebar ads */
}

.ad-container-top:hover,
.ad-container-middle:hover,
.ad-container-bottom:hover,
.ad-container-sidebar:hover {
    background-color: rgba(62, 74, 82, 0.4); /* Slightly lighter gunmetal on hover */
    border-color: var(--dark-accent);
    box-shadow: var(--box-shadow);
}

.ad-placeholder {
    opacity: 0.6;
    color: var(--text-secondary);
    font-style: italic;
}

/* Dropzone styling - Apple-inspired */
.dropzone {
    border: 1px dashed var(--dark-border);
    border-radius: 18px; /* Apple's more rounded corners for prominent elements */
    background-color: rgba(50, 50, 52, 0.3); /* Semi-transparent like Apple */
    backdrop-filter: var(--apple-backdrop-blur);
    -webkit-backdrop-filter: var(--apple-backdrop-blur);
    min-height: 180px;
    padding: 30px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1); /* Apple's smooth transitions */
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.dropzone:hover {
    border-color: var(--apple-blue);
    background-color: rgba(50, 50, 52, 0.4);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    transform: translateY(-2px);
}

.dropzone .dz-message {
    margin: 1.75rem 0;
    font-size: 1.1rem;
    color: var(--text-secondary);
    text-align: center;
    font-weight: 300;
    line-height: 1.5;
    letter-spacing: -0.02rem; /* Apple's letter spacing */
}

.dropzone .dz-message .upload-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--apple-blue);
    opacity: 0.9;
}

/* Apple-style dropzone active states */
.dropzone.dz-drag-hover {
    border-color: var(--apple-blue);
    background-color: rgba(0, 113, 227, 0.1);
}

/* Textarea styling - Apple-inspired */
.trademark-textarea {
    min-height: 150px;
    font-family: -apple-system, BlinkMacSystemFont, 'SF Mono', SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 0.9rem;
    background-color: rgba(45, 45, 47, 0.5);
    color: var(--text-primary);
    border: 1px solid var(--dark-border);
    border-radius: 8px; /* Apple's rounded corners */
    padding: 0.9rem;
    resize: vertical;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); /* Apple's smooth transitions */
}

.trademark-textarea:focus {
    border-color: var(--apple-blue);
    box-shadow: 0 0 0 2px rgba(0, 113, 227, 0.2); /* Apple's subtle focus glow */
    background-color: rgba(50, 50, 52, 0.7);
    color: var(--text-primary);
    outline: none;
}

/* Compact list group */
.list-group-sm .list-group-item {
    padding: 0.35rem 0.75rem;
    font-size: 0.85rem;
}

/* Reduce spacing throughout the app */
.card-body {
    padding: 0.75rem;
}

.card-header {
    padding: 0.5rem 0.75rem;
}

/* Make form elements more compact */
.form-control-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.875rem;
}

/* Reduce gap between components */
.mb-3 {
    margin-bottom: 0.75rem !important;
}

.mb-4 {
    margin-bottom: 1rem !important;
}

.py-2 {
    padding-top: 0.5rem !important;
    padding-bottom: 0.5rem !important;
}

/* Diff table styling */
.diff-table {
    font-family: monospace;
    font-size: 0.9rem;
    width: 100%;
    overflow-x: auto;
}

.diff-table td {
    padding: 0.25rem 0.5rem;
    white-space: pre-wrap;
}

/* Diff highlighting */
.diff_add, .text-success {
    color: #28a745 !important;
    font-weight: 500;
    text-decoration: underline;
}

.diff_chg, .text-warning {
    color: #ffc107 !important;
    font-weight: 500;
    text-decoration: underline;
}

.diff_sub, .text-danger {
    color: #dc3545 !important;
    font-weight: 500;
    text-decoration: underline;
}

/* Specific comparison styling */
.comparison-detail {
    border-top: 1px solid var(--dark-border);
    background: linear-gradient(145deg, rgba(44, 53, 57, 0.7) 0%, rgba(62, 74, 82, 0.5) 100%) !important; /* Gunmetal gradient */
    padding: 15px;
    border-radius: 0 0 8px 8px;
}

.comparison-detail .col-md-6 {
    border-right: 1px solid var(--dark-border);
    padding: 15px;
}

.comparison-detail .col-md-6:last-child {
    border-right: none;
}

.comparison-badge {
    min-width: 80px;
    text-align: center;
    border-radius: 20px;
    font-weight: 600;
    box-shadow: var(--box-shadow-sm);
}

/* Comparison blocks - clean minimal style */
.comparison-block {
    background-color: var(--dark-elevated);
    border-radius: 4px;
    padding: 16px;
    margin-bottom: 16px;
    border-left: 3px solid transparent;
    transition: all 0.2s ease;
}

.comparison-block:hover {
    background-color: var(--dark-surface);
}

.comparison-block.match {
    border-left-color: var(--success-color);
}

.comparison-block.warning {
    border-left-color: var(--warning-color);
}

/* --- Apple UI Enhancements --- */

/* Clean card design */
.clean-card {
    background-color: rgba(30, 30, 33, 0.7);
    border-radius: 16px;
    padding: 24px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transition: all 0.3s ease;
}

/* Apple-style buttons */
.btn-apple-primary {
    background: var(--apple-blue);
    color: white;
    border: none;
    border-radius: 980px;
    padding: 0.8rem 2rem;
    font-weight: 500;
    letter-spacing: -0.01em;
    box-shadow: 0 2px 8px rgba(0, 113, 227, 0.3);
    transition: all 0.3s ease;
}

.btn-apple-primary:hover {
    background: var(--apple-blue-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 113, 227, 0.4);
    color: white;
}

.btn-apple-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border: none;
    border-radius: 980px;
    padding: 0.8rem 2rem;
    font-weight: 500;
    letter-spacing: -0.01em;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.btn-apple-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-1px);
    color: white;
}

.btn-apple-outline {
    background: transparent;
    color: var(--apple-blue);
    border: 1px solid var(--apple-blue);
    border-radius: 980px;
    padding: 0.8rem 2rem;
    font-weight: 500;
    letter-spacing: -0.01em;
    transition: all 0.3s ease;
}

.btn-apple-outline:hover {
    background: rgba(0, 113, 227, 0.1);
    color: var(--apple-blue);
    transform: translateY(-1px);
}

/* Apple-style input */
.apple-input {
    background: rgba(30, 30, 33, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 12px;
    color: white;
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Helvetica Neue', Arial, sans-serif;
    transition: all 0.3s ease;
}

.apple-input:focus {
    background: rgba(40, 40, 43, 0.7);
    border-color: var(--apple-blue);
    box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.2);
}

/* Apple-style tabs */
.apple-tabs {
    border: none;
    margin-bottom: 0;
    display: flex;
    gap: 0.5rem;
}

.apple-tabs .nav-link {
    color: rgba(255, 255, 255, 0.6);
    background: transparent;
    border: none;
    border-radius: 980px;
    padding: 0.6rem 1rem;
    font-weight: 500;
    letter-spacing: -0.01em;
    transition: all 0.3s ease;
}

.apple-tabs .nav-link:hover {
    color: rgba(255, 255, 255, 0.9);
}

.apple-tabs .nav-link.active {
    color: white;
    background: rgba(255, 255, 255, 0.1);
}

.tab-content-apple {
    background: rgba(30, 30, 33, 0.5);
    border-radius: 12px;
    margin-top: 0.5rem;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

/* Apple-style ad containers */
.ad-container-apple {
    background: rgba(30, 30, 33, 0.5);
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition: all 0.3s ease;
    height: 100%;
    min-height: 90px;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.ad-container-mobile {
    min-height: 60px;
}

.ad-container-sidebar {
    min-height: 400px;
}

/* Match status badge */
.match-status-badge {
    border-radius: 980px;
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: -0.01em;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(30, 30, 33, 0.6);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

/* Similarity score badge */
.similarity-badge {
    font-size: 1rem !important;
    font-weight: 600;
    padding: 0.4rem 0.9rem;
    border-radius: 980px;
    letter-spacing: -0.01em;
    background: rgba(30, 30, 33, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

/* Progress bar */
.progress {
    background: rgba(20, 20, 23, 0.5);
    height: 8px;
    border-radius: 980px;
    overflow: hidden;
}

.progress-bar {
    background: linear-gradient(90deg, var(--apple-blue), #37aaff);
    border-radius: 980px;
    transition: width 0.6s ease;
}
/* Loading spinner - minimal */
.spinner-container {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 1.5rem 0;
    font-size: 0.95rem;
    background-color: var(--dark-secondary);
    border: 1px solid var(--dark-border);
    border-radius: 4px;
    margin: 1rem 0;
}

.spinner-border {
    width: 1.25rem;
    height: 1.25rem;
    border-width: 0.15em;
    margin-right: 0.75rem;
    color: var(--dark-accent);
}

/* Results container with traffic light colors - clean minimal */
.card-header.match {
    border-left: 3px solid var(--success-color);
    background-color: var(--dark-secondary);
    border-bottom: 1px solid var(--dark-border);
}

.card-header.no-match {
    border-left: 3px solid var(--danger-color);
    background-color: var(--dark-secondary);
    border-bottom: 1px solid var(--dark-border);
}

/* Traffic light styled elements - subtle indicators */
.traffic-light-success {
    background-color: rgba(76, 175, 80, 0.05);
    border-left: 3px solid var(--success-color);
    border-radius: 4px;
}

.traffic-light-warning {
    background-color: rgba(255, 152, 0, 0.05);
    border-left: 3px solid var(--warning-color);
    border-radius: 4px;
}

.traffic-light-danger {
    background-color: rgba(244, 67, 54, 0.05);
    border-left: 3px solid var(--danger-color);
    border-radius: 4px;
}

/* Additional UI enhancements - Apple-inspired style */
.feature-card {
    background-color: rgba(30, 30, 32, 0.6); /* Semi-transparent like Apple */
    backdrop-filter: var(--apple-backdrop-blur);
    -webkit-backdrop-filter: var(--apple-backdrop-blur);
    border-radius: 12px; /* Apple's rounded corners */
    padding: 28px;
    height: 100%;
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15); /* Apple's subtle shadow */
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1); /* Apple's smooth transitions */
}

.feature-card:hover {
    background-color: rgba(35, 35, 37, 0.7);
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: 1.25rem;
    color: var(--apple-blue);
    opacity: 0.9;
}

.section-title {
    position: relative;
    margin-bottom: 2.5rem;
    font-weight: 600; /* Apple uses bolder headings */
    letter-spacing: -0.02em; /* Apple's signature negative letter spacing */
    font-size: 1.75rem;
    color: var(--text-primary);
}

.section-title::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -12px;
    height: 1px;
    width: 50px;
    background: var(--apple-blue);
    opacity: 0.8;
}

/* Apple-style large headline */
.heading-large {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.03em; /* More pronounced for larger text */
    line-height: 1.1;
    margin-bottom: 1rem;
}

/* Apple-style subheading */
.heading-subtitle {
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--text-secondary);
    letter-spacing: -0.01em;
    line-height: 1.4;
    margin-bottom: 2rem;
}

/* Card with frosted glass effect like Apple */
.card-glass {
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: var(--apple-backdrop-blur);
    -webkit-backdrop-filter: var(--apple-backdrop-blur);
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

/* Tooltip - minimal */
.tooltip-inner {
    background-color: var(--dark-secondary);
    border: none;
    border-radius: 3px;
    box-shadow: var(--box-shadow-sm);
    padding: 6px 10px;
    max-width: 250px;
    font-size: 0.85rem;
}

.bs-tooltip-auto[x-placement^=top] .arrow::before, 
.bs-tooltip-top .arrow::before {
    border-top-color: var(--dark-secondary);
}

/* Subtle scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--dark-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--dark-border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--dark-elevated);
}

/* Animation utility classes - minimal and subtle */
.fade-in {
    animation: fadeIn 0.4s ease-in-out;
}

.slide-in-up {
    animation: slideInUp 0.4s ease-out;
}

/* Minimal animations */
.pulse {
    animation: pulse 3s infinite ease-in-out;
    animation-delay: 1s;
}

/* Subtle shimmer effect */
.shimmer {
    background: linear-gradient(90deg, 
        var(--dark-surface) 0%, 
        var(--dark-elevated) 15%, 
        var(--dark-surface) 30%);
    background-size: 200% 100%;
    animation: shimmer 2s infinite linear;
}

/* Clean button hover effects */
.btn-hover-subtle:hover {
    opacity: 0.9;
}

/* Subtle dropzone animation */
.dropzone-animated .dz-message {
    transition: opacity 0.3s ease;
}

.dropzone-animated:hover .dz-message {
    opacity: 0.8;
}

/* Clean results animation */
.comparison-result-animated {
    animation: fadeIn 0.5s ease-out;
}

/* Footer styling - Apple-inspired */
footer {
    background-color: rgba(22, 22, 23, 0.8); /* Apple's dark semi-transparent footer */
    backdrop-filter: var(--apple-backdrop-blur);
    -webkit-backdrop-filter: var(--apple-backdrop-blur);
    padding: 2.5rem 0;
    margin-top: 4rem;
    border-top: 1px solid var(--dark-border);
    color: var(--text-secondary);
    font-size: 0.9rem;
    letter-spacing: -0.01em; /* Apple's letter spacing */
}

footer p {
    margin-bottom: 0.5rem;
    font-weight: 300;
}

footer a {
    color: var(--apple-blue);
    text-decoration: none;
    transition: opacity 0.2s ease;
}

footer a:hover {
    opacity: 0.8;
    text-decoration: none;
}

/* Portrait-style container for desktop - narrower, centered layout */
.container,
.container-fluid,
.container-sm,
.container-md,
.container-lg,
.container-xl,
.container-xxl {
    max-width: 950px !important;
    margin-left: auto !important;
    margin-right: auto !important;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .diff-table {
        font-size: 0.8rem;
    }
    
    .dropzone {
        min-height: 120px;
    }
    
    .trademark-textarea {
        min-height: 150px;
    }
    
    /* Better mobile handling for diff container */
    #diff-container {
        max-width: 100%;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    /* Make buttons full width on mobile */
    #compare-btn, #clear-btn {
        display: block;
        width: 100%;
        margin: 0.5rem 0;
    }
    
    /* Adjust spacing for mobile */
    .container {
        padding-left: 15px;
        padding-right: 15px;
    }
    
    /* Make sure the diff table is mobile friendly */
    .diff-table td {
        font-size: 0.7rem;
        word-break: break-word;
    }
    
    /* New comparison adjustments for mobile */
    .table-responsive {
        width: 100%;
        margin-bottom: 15px;
        overflow-y: hidden;
        -ms-overflow-style: -ms-autohiding-scrollbar;
        border: 1px solid var(--dark-border);
        border-radius: 8px;
    }
    
    /* Adjust the diff display for readability on mobile */
    .row.g-0 .col-md-6 {
        width: 100%;
        border-right: none !important;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .row.g-0 .col-md-6:last-child {
        border-bottom: none;
    }
    
    /* Make text in badges more visible */
    .badge {
        padding: 0.5em 0.7em;
        font-size: 0.75rem;
    }
    
    /* Better spacing for the comparison rows */
    .table-bordered td, .table-bordered th {
        padding: 0.5rem;
    }
    
    /* Adjust section title for mobile */
    .section-title {
        font-size: 1.5rem;
    }
    
    .section-title::after {
        width: 40px;
    }
}