/* ==========================================================================
   Professional IP Checker - Main Stylesheet
   ========================================================================== */

/* Root Variables for Theme Management */
:root {
    /* Programmer Dark Green Theme */
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --bg-card: #1c2128;
    --bg-overlay: rgba(0, 0, 0, 0.95);
    
    /* Green Accent Colors */
    --accent-green: #00ff88;
    --accent-dark-green: #00cc6a;
    --accent-light-green: #39ff14;
    
    color: var(--accent-green);
    --cyber-green: #39ff14;
    
    /* Text Colors */
    --text-primary: #f0f6fc;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;
    --text-green: #00ff88;
    
    /* Primary Colors - Updated for Green Theme */
    --primary-gradient: linear-gradient(135deg, var(--accent-green) 0%, var(--terminal-green) 100%);
    --secondary-gradient: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
    /* Removed unintended layout properties from :root (width/height/min-width/padding) */
    --primary-color: var(--accent-green);
    --secondary-color: var(--terminal-green);
    --accent-color: var(--cyber-green);
    --success-color: #238636;
    --warning-color: #d29922;
    --error-color: #ef4444;
    --info-color: var(--accent-green);
    
    /* Neutral Colors - Dark Theme */
    --white: var(--text-primary);
    --gray-50: #f6f8fa;
    --gray-100: #eaeef2;
    --gray-200: #d0d7de;
    --gray-300: #afb8c1;
    --gray-400: var(--text-secondary);
    --gray-500: var(--text-muted);
    --gray-600: #656d76;
    --gray-700: #424a53;
    --gray-800: var(--bg-tertiary);
    --gray-900: var(--bg-primary);
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    
    /* Border Radius - Flat (no rounding) */
    --radius-sm: 0;
    --radius-md: 0;
    --radius-lg: 0;
    --radius-xl: 0;
    --radius-2xl: 0;
    
    /* Shadows - Updated for Dark Theme */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
    --shadow-card: 0 4px 12px rgba(0, 0, 0, 0.6);
    --shadow-hover: 0 8px 25px rgba(0, 255, 136, 0.3);
    
    /* Typography - Updated for Programmer Theme */
    --font-sans: 'Fira Code', 'JetBrains Mono', 'Consolas', 'Monaco', 'Courier New', monospace;
    --font-mono: 'Fira Code', 'JetBrains Mono', 'Consolas', monospace;
    
    /* Transitions (disabled) */
    --transition-fast: 0s;
    --transition-normal: 0s;
    --transition-slow: 0s;
    
    /* Z-Index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal: 1040;
    --z-popover: 1050;
    --z-tooltip: 1060;

    /* Define missing color variables used in gradients */
    --terminal-green: #00cc6a; /* deep accent green */
    --matrix-green: #00e676; /* bright green for gradient accents */
}

/* Reset and Base Styles */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 14px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(0, 255, 136, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(57, 255, 20, 0.05) 0%, transparent 50%),
        linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    min-height: 100vh;
    padding: var(--space-md);
    padding-left: calc(var(--space-md) + env(safe-area-inset-left, 0px));
    padding-right: calc(var(--space-md) + env(safe-area-inset-right, 0px));
    padding-top: calc(var(--space-md) + env(safe-area-inset-top, 0px));
    padding-bottom: calc(var(--space-md) + env(safe-area-inset-bottom, 0px));
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    background: var(--bg-card);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl);
    overflow: hidden;
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 255, 136, 0.2);
}

/* Header */
.header {
    background: var(--secondary-gradient);
    color: var(--text-primary);
    padding: var(--space-xl) var(--space-xl) var(--space-md);
    text-align: left;
    position: relative;
    overflow: hidden;
    border-bottom: 2px solid var(--accent-green);
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="2" fill="%2300ff88" opacity="0.1"/></svg>') repeat;
    animation: none;
}

@keyframes float {}

.header h1 {
    font-size: clamp(1.5rem, 2.8vw, 2.5rem);
    font-weight: 800;
    margin-bottom: var(--space-md);
    position: relative;
    z-index: 1;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--accent-green) 0%, var(--cyber-green) 50%, var(--matrix-green) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 30px rgba(0, 255, 136, 0.5);
}

/* Navbar layout inside header */
/* Navbar removed; header is centered */

/* Footer */
.footer { color: var(--text-secondary); }
.footer .footer-inner { display: grid; gap: 6px; justify-items: center; }
.footer .footer-line { line-height: 1.4; }

.header p {
    font-size: clamp(0.95rem, 1.8vw, 1.125rem);
    opacity: 0.9;
    position: relative;
    z-index: 1;
    max-width: 600px;
    margin: var(--space-sm) auto 0;
    color: var(--text-secondary);
}

/* Box the header description like other labels */
.header .header-desc {
    margin-top: var(--space-md);
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--accent-green);
    border-radius: var(--radius-sm);
    background: var(--bg-secondary);
    display: inline-block;
}

.header .version-badge {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    background: rgba(0, 255, 136, 0.2);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--accent-green);
    border: 1px solid rgba(0, 255, 136, 0.3);
}

/* Main Content */
.main-content {
    padding: var(--space-2xl);
}

/* Ensure vertical rhythm between top-level cards and sections */
.main-content > .result-card,
.main-content > .loading,
.main-content > .error-message,
.main-content > .api-status {
    margin-bottom: var(--space-xl);
}

/* Add separation before the results grid to avoid collision with previous cards */
.results {
    display: none;
    gap: var(--space-xl);
    margin-top: var(--space-xl);
}

/* Current IP Display */
.current-ip {
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
    border: 1px solid var(--accent-green);
    color: var(--accent-green);
    padding: var(--space-lg);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-xl);
    text-align: left;
    font-weight: 600;
    font-size: 0.95rem;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: center;
    gap: var(--space-sm);
    position: relative;
    overflow: hidden;
    box-shadow: 0 0 20px rgba(0, 255, 136, 0.2);
}

.current-ip::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 255, 136, 0.3), transparent);
    animation: none;
}

@keyframes shimmer {}

/* Current IP inner layout */
.current-ip-row {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--accent-green);
    border-radius: var(--radius-md);
    background: var(--bg-secondary);
}
.current-ip-icon { color: var(--accent-green); }
.current-ip-main { 
    display: flex; 
    flex-direction: column; 
    gap: var(--space-xs); 
}
.current-ip-label { 
    color: var(--text-secondary); 
    font-weight: 500; 
    font-size: 0.8rem;
}
.current-ip-value { 
    color: var(--accent-green); 
    font-family: var(--font-mono);
    font-weight: 600;
    word-break: break-all;
    font-size: 0.9rem;
}
.current-ip-location {
    margin-top: var(--space-xs);
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--accent-green);
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--accent-green);
    border-radius: var(--radius-md);
    background: var(--bg-secondary);
}

/* Current IP Display - Simple 3 Row Layout */
.current-ip-simple {
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
    border: 1px solid var(--accent-green);
    color: var(--accent-green);
    padding: var(--space-lg);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-xl);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    position: relative;
    overflow: hidden;
    box-shadow: 0 0 20px rgba(0, 255, 136, 0.2);
}

.current-ip-simple::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 255, 136, 0.3), transparent);
    animation: none;
}

/* Removed mobile current-ip overrides for desktop-only mode */

/* Input Section */
.input-section {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    margin-bottom: var(--space-xl);
    border: 1px solid rgba(0,255,136,0.45);
    position: relative;
}

.input-group {
    display: grid;
    grid-template-columns: 1fr; /* stack input and button */
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
    align-items: stretch; /* allow full-width children */
}

/* Ensure full-width buttons within input groups */
.input-actions { width: 100%; }
.input-group .btn { width: 100%; }

/* Make input and button same height in the main input section */
.input-section .input-wrapper input { height: 44px; padding-top: 0; padding-bottom: 0; }
.input-section .btn { height: 44px; min-height: 44px; padding-top: 0; padding-bottom: 0; }
.input-section .btn-primary { border-width: 2px; }

/* Converter form control sizing */
#converterBody .input-wrapper input { height: 44px; padding-top: 0; padding-bottom: 0; padding-left: var(--space-md); }
#converterBody .btn { height: 44px; min-height: 44px; padding-top: 0; padding-bottom: 0; justify-content: center; text-align: center; }

/* Analysis form control sizing */
#analysisBody .input-wrapper input { height: 44px; padding-top: 0; padding-bottom: 0; padding-left: var(--space-md); }
#analysisBody .btn { height: 44px; min-height: 44px; padding-top: 0; padding-bottom: 0; justify-content: center; text-align: center; }

.input-wrapper {
    min-width: 0;
}

.input-wrapper label {
    display: block;
    margin-bottom: var(--space-sm);
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.input-wrapper input {
    width: 100%;
    padding: var(--space-lg);
    border: 2px solid rgba(0,255,136,0.35);
    border-radius: var(--radius-lg);
    font-size: 16px; /* Avoid iOS zoom */
    font-family: var(--font-mono);
    transition: none;
    background: var(--bg-secondary);
    color: var(--text-primary);
    -webkit-appearance: none;
    appearance: none;
}

.input-wrapper input:focus {
    outline: none;
    border-color: var(--accent-green);
    box-shadow: 0 0 0 2px rgba(0, 255, 136, 0.25);
}

.input-wrapper input::placeholder {
    color: var(--text-muted);
}

/* Button Styles */
.button-group {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.btn {
    padding: var(--space-md) var(--space-xl);
    border: none;
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-normal);
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    text-decoration: none;
    position: relative;
    overflow: hidden;
    min-height: 44px;
    white-space: nowrap;
    width: auto;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent 30%, rgba(0, 255, 136, 0.1) 50%, transparent 70%);
    transform: translateX(-100%);
    transition: transform 0.6s;
}

.btn:hover::before { transform: none; }

.btn-primary {
    background: var(--primary-gradient);
    color: var(--bg-primary);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--accent-green);
}

.btn-primary:hover { background: linear-gradient(135deg, var(--cyber-green) 0%, var(--accent-green) 100%); }

.btn-secondary {
    background: var(--gray-600);
    color: var(--white);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover { background: var(--gray-700); }

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-outline:hover { background: var(--primary-color); color: var(--white); }

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}



/* Loading State */
.loading {
    display: none;              /* container only */
    text-align: center;
    padding: var(--space-xl) 0; /* vertical spacing */
    background: transparent;
    border-radius: 0;
    margin-bottom: var(--space-xl);
}

.loading.show {
    display: block;
}

.spinner {
    width: 240px;
    height: 6px;
    margin: 0 auto var(--space-md);
    background: linear-gradient(90deg, rgba(0,255,136,0.1), var(--accent-green), rgba(0,255,136,0.1));
    background-size: 200% 100%;
    animation: loadingBar 1.2s linear infinite;
}

@keyframes loadingBar {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.loading-text { color: var(--gray-600); font-weight: 500; margin: var(--space-sm) 0 0; }

/* Loading progress bar styles removed: using single spinner only */

/* Reusable centered, auto-width loading box */
.loading-box {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    border: 1px solid var(--accent-green);
    border-radius: var(--radius-sm);
    background: var(--bg-secondary);
    width: fit-content; /* auto width */
    max-width: 100%;
    margin: 0 auto;     /* center */
}

/* Results Section */
.results.show {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
}

.result-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(0,255,136,0.25);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.result-card:hover { border-color: var(--accent-green); }

.result-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
}

.result-card h3 {
    color: var(--text-primary);
    margin-bottom: var(--space-lg);
    font-size: 1.125rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center; /* center title contents */
    text-align: center;      /* center text */
    gap: var(--space-sm);
}

.result-card h3 i {
    color: var(--primary-color);
}

/* Boxed icons with transparent green background */
.result-card h3 i,
.info-label i,
.current-ip i,
.api-status h4 i,
.api-status-indicator i,
.footer i {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    min-width: 24px;
    border: 1px solid var(--accent-green);
    background: rgba(0, 255, 136, 0.10);
    color: var(--accent-green) !important;
    border-radius: var(--radius-sm);
    box-sizing: border-box;
    padding: 3px;
    line-height: 1;
    font-size: 14px;
    vertical-align: middle;
}

/* Bordered box for specific titles */
#analysisCard .card-header h3,
#ipv6to4Section .card-header h3,
#apiStatus .card-header h3 {
    border: 1px solid var(--accent-green);
    background: var(--bg-secondary);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
    margin-top: var(--space-md); /* add top spacing for boxed titles */
    display: inline-flex;              /* shrink to content */
    align-items: center;
    justify-content: center;
    width: auto;                       /* auto width */
    margin-left: auto;
    margin-right: auto;                /* center the box */
}

/* Information Grid */
.info-grid {
    display: grid;
    gap: var(--space-md);
}

.info-item {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xs);
    align-items: start;
    padding: var(--space-md);
    border: 1px solid var(--accent-green);
    border-radius: var(--radius-md);
    background: var(--bg-tertiary);
}



.info-label {
    font-weight: 600;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.9rem;
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--accent-green);
    border-radius: var(--radius-sm);
    background: var(--bg-secondary);
    margin-bottom: var(--space-xs);
}

.info-label i { color: var(--accent-green); }

.info-value {
    color: var(--text-primary);
    font-weight: 500;
    text-align: left;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    word-break: break-word;
}

/* Status Badges */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-lg);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.status-badge.success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

.status-badge.danger {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error-color);
}

.status-badge.warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning-color);
}

.status-badge.info {
    background: rgba(59, 130, 246, 0.1);
    color: var(--info-color);
}

/* Privacy Score */
.privacy-score {
    text-align: center;
    padding: var(--space-xl);
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-lg);
}

.privacy-meter {
    width: 120px;
    height: 120px;
    margin: 0 auto var(--space-md);
    position: relative;
}

.privacy-meter svg {
    transform: rotate(-90deg);
}

.privacy-meter .background {
    fill: none;
    stroke: var(--gray-200);
    stroke-width: 8;
}

.privacy-meter .progress {
    fill: none;
    stroke-width: 8;
    stroke-linecap: round;
    transition: stroke-dasharray 1s ease-in-out;
}

.privacy-meter .score-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-800);
}

/* Map Container */
.map-container {
    grid-column: 1 / -1;
}

#map {
    height: 450px;
    width: 100%;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(0,255,136,0.25);
    box-shadow: var(--shadow-md);
}

/* Map Lazy Loading */
.map-lazy-placeholder {
    height: 450px;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    border-radius: var(--radius-lg);
    border: 2px dashed var(--accent-green);
    transition: none;
}

.map-lazy-placeholder:hover {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
}

.map-lazy-content {
    text-align: center;
    padding: var(--space-xl);
}

.btn-load-map { animation: none; }

@keyframes pulse {}

/* Map Loading State */
.map-loading {
    height: 450px;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;           /* center inner loading-box */
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(0,255,136,0.25);
}

.map-loading .spinner {
    width: 240px;
    height: 6px;
    margin: 0 auto var(--space-md);
    background: linear-gradient(90deg, rgba(0,255,136,0.1), var(--accent-green), rgba(0,255,136,0.1));
    background-size: 200% 100%;
    animation: loadingBar 1.2s linear infinite; /* keep functional loading bar */
}

.map-loading p { color: var(--gray-600); margin: 0; }

/* API Status */
.api-status { display: none; }

.api-status.show { display: block; }

/* Inherit card heading styles via .result-card .card-header h3 */

.api-grid { display: grid; gap: var(--space-md); }

.api-item { display: flex; justify-content: space-between; align-items: center; padding: var(--space-md); background: var(--bg-tertiary); border-radius: var(--radius-md); border: 1px solid var(--accent-green); }

.api-name { font-weight: 600; color: var(--text-primary); }

.api-status-indicator {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-weight: 600;
    font-size: 0.9rem;
}

.api-status-indicator.success { color: var(--success-color); }

.api-status-indicator.error { color: var(--error-color); }

.api-response-time {
    font-size: 0.8rem;
    color: var(--gray-500);
    margin-left: var(--space-xs);
}

/* Error Messages */
.error-message {
    background: var(--bg-secondary);
    border: 1px solid var(--error-color);
    color: var(--text-primary);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-xl);
    display: none;
    box-shadow: var(--shadow-sm);
}

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

.error-message i {
    margin-right: var(--space-sm);
}

/* History Section */
/* History removed for public version */

/* Collapsible Cards */
.collapsible-card .card-header {
    display: flex;
    flex-direction: column; /* stack children vertically */
    align-items: stretch;    /* allow full-width button */
    gap: var(--space-sm);
    border-bottom: 1px solid rgba(0,255,136,0.2);
    padding-bottom: var(--space-md);
}
.collapsible-card .toggle-btn {
    background: var(--bg-secondary);
    color: var(--accent-green);
    border: 1px solid rgba(0,255,136,0.4);
    padding: var(--space-sm) var(--space-md);
    cursor: pointer;
    font-family: var(--font-mono);
    width: 100%;               /* full width button */
    text-align: center;        /* center label */
}
.collapsible-card.collapsed .card-body {
    display: none;
}
.collapsible-card .card-body {
    padding-top: var(--space-md);
}

/* Export Section */
.export-section {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-lg);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--gray-200);
}

/* Responsive design breakpoints (example-style) */

/* <= 1200px (large tablets/smaller desktops) */
@media screen and (max-width: 1200px) {
    .main-content { padding: var(--space-xl); }
    .results { gap: var(--space-lg); }
    #map, .map-lazy-placeholder, .map-loading { height: 380px; }
}

/* <= 1024px */
@media screen and (max-width: 1024px) {
    .results.show { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
    .result-card { padding: var(--space-md); }
    #map, .map-lazy-placeholder, .map-loading { height: 340px; }
}

/* <= 768px (tablets/large phones) */
@media screen and (max-width: 768px) {
    .header { padding: var(--space-lg) var(--space-sm); }
    .main-content { padding: var(--space-sm); }
    .input-group { grid-template-columns: 1fr; gap: var(--space-xs); }
    /* keep buttons full width on mobile too */
    .input-section .btn, #converterBody .btn { width: 100%; }
    .results { gap: var(--space-sm); }
    .results.show { grid-template-columns: 1fr; }
    #map, .map-lazy-placeholder, .map-loading { height: 300px; }
    .result-card { padding: var(--space-md); }
    .info-item { padding: var(--space-xs); }
    .current-ip { padding: var(--space-md); }
    .input-section { padding: var(--space-md); }
}

/* <= 480px (phones) */
@media screen and (max-width: 480px) {
    body { padding: var(--space-xs); }
    .header { padding: var(--space-lg) var(--space-sm); }
    .result-card { padding: var(--space-sm); }
    .input-section { padding: var(--space-md); }
    .info-item { padding: var(--space-xs); }
    .results { gap: var(--space-sm); }
    .current-ip { padding: var(--space-md); }
    #map, .map-lazy-placeholder, .map-loading { height: 260px; }
}

/* <= 360px (small phones) */
@media screen and (max-width: 360px) {
    .btn { padding: var(--space-sm) var(--space-md); }
    .input-wrapper label { font-size: 0.85rem; }
    .info-label, .info-value { font-size: 0.85rem; }
    .result-card { padding: var(--space-xs); }
    .input-section { padding: var(--space-sm); }
    .info-item { padding: var(--space-xxs, 0.2rem); }
    #map, .map-lazy-placeholder, .map-loading { height: 220px; }
}

/* Print Styles */
@media print {
    body {
        background: var(--bg-primary);
        color: var(--text-primary);
    }
    
    .container {
        box-shadow: none;
        border: 1px solid var(--accent-green);
    }
    
    .header {
        background: #f0f0f0 !important;
        color: black !important;
    }
    
    .btn,
    .theme-toggle,
    .loading,
    .input-section {
        display: none !important;
    }
    
    .result-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ccc;
        margin-bottom: 1rem;
    }
    
    #map {
        height: 200px;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Always animate core loading indicators, even when reduced motion is preferred
   (accessibility-friendly: keep short, subtle animations only for loaders) */
.spinner,
.map-loading .spinner,
.loading-splash .splash-spinner,
.splash-spinner {
    animation-duration: 1.2s !important;
    animation-iteration-count: infinite !important;
    animation-name: loadingBar !important; /* for spinner bars that use this keyframe */
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    .container {
        border: 2px solid;
    }
    
    .result-card {
        border: 2px solid;
    }
    
    .btn {
        border: 2px solid;
    }
}

/* Focus Styles for Accessibility */
*:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.btn:focus,
input:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 255, 136, 0.2);
}

/* Animation Classes */
.fade-in { animation: none; }

@keyframes fadeIn {}

.slide-in { animation: none; }

@keyframes slideIn {}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.font-mono { font-family: var(--font-mono); }
.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.text-sm { font-size: 0.875rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.hidden { display: none !important; }
.block { display: block !important; }
.flex { display: flex !important; }
.grid { display: grid !important; }
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }
.top-0 { top: 0; }
.right-0 { right: 0; }
.bottom-0 { bottom: 0; }
.left-0 { left: 0; }
.z-10 { z-index: 10; }
.z-20 { z-index: 20; }
.z-30 { z-index: 30; }
.opacity-50 { opacity: 0.5; }
.opacity-75 { opacity: 0.75; }
.pointer-events-none { pointer-events: none; }
.cursor-pointer { cursor: pointer; }
.cursor-not-allowed { cursor: not-allowed; }
.select-none { 
    -webkit-user-select: none; 
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none; 
}
.select-all { 
    -webkit-user-select: all; 
    -moz-user-select: all;
    -ms-user-select: all;
    user-select: all; 
}
.truncate { 
    overflow: hidden; 
    text-overflow: ellipsis; 
    white-space: nowrap; 
}
.break-words { word-break: break-word; }
.break-all { word-break: break-all; }
.whitespace-nowrap { white-space: nowrap; }
.whitespace-pre-wrap { white-space: pre-wrap; }