/* ========== VARIABLES ========== */
:root {
    /* Colors */
    --primary-color: #4361ee;
    --primary-hover: #3a56d4;
    --primary-glow: 0 0 15px rgba(67, 97, 238, 0.6);
    --secondary-color: #3f37c9;
    --accent-color: #4cc9f0;
    --accent-hover: #38b6db;
    
    /* Background colors */
    --background-dark: #0f172a;
    --card-bg: #1e293b;
    --input-bg: #334155;
    --tab-inactive: #334155;
    
    /* Text colors */
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    
    /* Status colors */
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    
    /* Border colors */
    --border-color: #475569;
    --border-hover: #64748b;
    
    /* Spacing */
    --spacing-xs: 5px;
    --spacing-sm: 10px;
    --spacing-md: 15px;
    --spacing-lg: 20px;
    --spacing-xl: 30px;
    
    /* Border radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-round: 50%;
    
    /* Shadows */
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Font weights */
    --font-light: 300;
    --font-regular: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    
    /* Z-index layers */
    --z-base: 1;
    --z-above: 10;
    --z-modal: 100;
    --z-overlay: 1000;
}

/* ========== RESET & BASE STYLES ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', 'Arial', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    background-color: var(--background-dark);
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(67, 97, 238, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 90% 80%, rgba(76, 201, 240, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(63, 55, 201, 0.05) 0%, transparent 70%);
    min-height: 100vh;
    color: var(--text-primary);
    position: relative;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%234361ee' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    pointer-events: none;
    z-index: -1;
    opacity: 0.5;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-semibold);
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

h1 { 
    font-size: 2.5rem; 
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    font-weight: var(--font-bold);
}

h2 { 
    font-size: 2rem; 
    color: var(--text-primary);
}

h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

a {
    color: var(--accent-color);
    text-decoration: none;
    transition: all var(--transition-fast);
    position: relative;
}

a:hover {
    color: var(--accent-hover);
}

a::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 1px;
    bottom: -2px;
    left: 0;
    background-color: var(--accent-color);
    transform: scaleX(0);
    transform-origin: bottom right;
    transition: transform var(--transition-normal);
}

a:hover::after {
    transform: scaleX(1);
    transform-origin: bottom left;
}

/* ========== LAYOUT ========== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-xl);
    position: relative;
    z-index: var(--z-base);
}

.header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-xl) 0;
    position: relative;
}

.header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    border-radius: var(--radius-round);
}

.header h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    margin-bottom: var(--spacing-md);
    position: relative;
    display: inline-block;
}

.header h1 i {
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.header p {
    font-size: clamp(1rem, 3vw, 1.2rem);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: clamp(var(--spacing-lg), 5vw, var(--spacing-xl));
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(67, 97, 238, 0.1);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

/* ========== WALLET SECTION ========== */
.wallet-section {
    margin-bottom: var(--spacing-xl);
    text-align: center;
    padding: var(--spacing-xl);
    background: rgba(67, 97, 238, 0.05);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(67, 97, 238, 0.15);
    position: relative;
    overflow: hidden;
    transition: all var(--transition-normal);
}

.wallet-section:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: rgba(67, 97, 238, 0.25);
}

.wallet-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(67, 97, 238, 0.1) 0%, transparent 70%);
    opacity: 0;
    transition: opacity var(--transition-slow);
    z-index: -1;
}

.wallet-section:hover::before {
    opacity: 1;
}

.wallet-status {
    margin-top: var(--spacing-md);
    font-weight: var(--font-semibold);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    display: inline-block;
    transition: all var(--transition-normal);
}

.wallet-status.connected {
    color: var(--success-color);
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.wallet-status.error {
    color: var(--error-color);
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.wallet-status i {
    margin-right: var(--spacing-sm);
}

/* ========== TABS ========== */
.tabs {
    display: flex;
    background: var(--tab-inactive);
    border-radius: var(--radius-lg);
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.tab {
    flex: 1;
    padding: var(--spacing-md);
    text-align: center;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    font-weight: var(--font-semibold);
    color: var(--text-secondary);
    position: relative;
    z-index: var(--z-base);
    user-select: none;
}

.tab:hover:not(.active) {
    background: rgba(67, 97, 238, 0.1);
    color: var(--text-primary);
}

.tab.active {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--primary-glow);
}

.tab-content {
    display: none;
    animation: fadeIn var(--transition-normal);
    padding-top: var(--spacing-md);
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from { 
        opacity: 0; 
        transform: translateY(10px);
    }
    to { 
        opacity: 1; 
        transform: translateY(0);
    }
}

/* ========== FORMS ========== */
.form-group {
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: var(--font-medium);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    font-size: 0.95rem;
    letter-spacing: 0.5px;
}

.form-group input, 
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 16px;
    transition: all var(--transition-normal);
    background-color: var(--input-bg);
    color: var(--text-primary);
    box-shadow: var(--shadow-inner);
}

.form-group input:hover, 
.form-group textarea:hover {
    border-color: var(--border-hover);
}

.form-group input:focus, 
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.2);
}

.form-group textarea {
    height: 150px;
    resize: vertical;
    font-family: 'Roboto Mono', monospace;
    line-height: 1.5;
}

.help-text {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
    opacity: 0.8;
    transition: opacity var(--transition-fast);
}

.form-group:hover .help-text {
    opacity: 1;
}

/* ========== BUTTONS ========== */
.btn {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: var(--spacing-md) var(--spacing-xl);
    border: none;
    border-radius: var(--radius-md);
    font-size: 16px;
    font-weight: var(--font-semibold);
    cursor: pointer;
    transition: all var(--transition-normal);
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 4px 6px rgba(67, 97, 238, 0.2);
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, 
        rgba(255, 255, 255, 0) 0%, 
        rgba(255, 255, 255, 0.2) 50%, 
        rgba(255, 255, 255, 0) 100%);
    transition: all 0.8s ease;
}

.btn:hover::before {
    left: 100%;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 15px rgba(67, 97, 238, 0.4);
}

.btn:active {
    transform: translateY(1px);
    box-shadow: 0 2px 5px rgba(67, 97, 238, 0.3);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-secondary {
    background: rgba(67, 97, 238, 0.1);
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    margin-top: var(--spacing-sm);
    box-shadow: none;
}

.btn-secondary:hover {
    background: rgba(67, 97, 238, 0.15);
    box-shadow: 0 4px 10px rgba(67, 97, 238, 0.2);
    transform: translateY(-2px);
}

.btn i {
    margin-right: var(--spacing-sm);
    font-size: 1.1em;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(67, 97, 238, 0.4);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(67, 97, 238, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(67, 97, 238, 0);
    }
}

.btn.pulse {
    animation: pulse 2s infinite;
}

/* ========== STATUS MESSAGES ========== */
.status {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    margin: var(--spacing-lg) 0;
    font-weight: var(--font-medium);
    display: flex;
    align-items: flex-start;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.status.success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.status.error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error-color);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.status.warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning-color);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.status i {
    margin-right: var(--spacing-sm);
    font-size: 1.2em;
}

.status::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 4px;
}

.status.success::before {
    background-color: var(--success-color);
}

.status.error::before {
    background-color: var(--error-color);
}

.status.warning::before {
    background-color: var(--warning-color);
}

/* ========== STAT CARDS ========== */
.stat-card {
    background: linear-gradient(135deg, rgba(67, 97, 238, 0.05), rgba(63, 55, 201, 0.05));
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    border: 1px solid rgba(67, 97, 238, 0.1);
    transition: all var(--transition-normal);
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(67, 97, 238, 0.15);
    border-color: rgba(67, 97, 238, 0.2);
}

.stat-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-normal);
}

.stat-card:hover::after {
    transform: scaleX(1);
}

.stat-number {
    font-size: 2.2rem;
    font-weight: var(--font-bold);
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: var(--spacing-sm);
    line-height: 1.2;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-weight: var(--font-medium);
}

/* ========== CONTRACT LIST ========== */
.contract-list {
    max-height: 300px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-sm);
    background: rgba(15, 23, 42, 0.5);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-inner);
}

.contract-item {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all var(--transition-normal);
    border-radius: var(--radius-sm);
}

.contract-item:hover {
    background: rgba(67, 97, 238, 0.08);
    transform: translateX(5px);
}

.contract-item:last-child {
    border-bottom: none;
}

.contract-name {
    font-weight: var(--font-semibold);
    color: var(--text-primary);
}

.contract-address {
    font-family: 'Roboto Mono', monospace;
    color: var(--accent-color);
    font-size: 0.9rem;
    word-break: break-all;
}

/* ========== LOADING INDICATOR ========== */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(67, 97, 238, 0.2);
    border-top: 3px solid var(--primary-color);
    border-radius: var(--radius-round);
    animation: spin 1s linear infinite;
    margin-right: var(--spacing-sm);
    box-shadow: 0 0 5px rgba(67, 97, 238, 0.5);
}

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

/* ========== BRAND & DISPLAY ELEMENTS ========== */
.brand {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    background: rgba(67, 97, 238, 0.1);
    color: var(--primary-color);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 20px;
    font-size: 0.9rem;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(67, 97, 238, 0.2);
    transition: all var(--transition-normal);
    z-index: var(--z-above);
    box-shadow: var(--shadow-md);
}

.brand:hover {
    background: rgba(67, 97, 238, 0.2);
    box-shadow: 0 0 15px rgba(67, 97, 238, 0.4);
    transform: translateY(-3px);
}

.brand i {
    color: var(--accent-color);
}

.address-display {
    font-family: 'Roboto Mono', monospace;
    background: var(--input-bg);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin: var(--spacing-sm) 0;
    border: 1px solid var(--border-color);
    word-break: break-all;
    color: var(--accent-color);
    font-size: 0.9rem;
    position: relative;
    overflow: hidden;
}

.address-display::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(to bottom, var(--primary-color), var(--accent-color));
}

.tx-hash {
    font-family: 'Roboto Mono', monospace;
    color: var(--accent-color);
    text-decoration: none;
    transition: all var(--transition-fast);
    font-size: 0.9rem;
    position: relative;
    display: inline-block;
}

.tx-hash:hover {
    color: var(--primary-color);
}

.tx-hash::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 1px;
    bottom: -2px;
    left: 0;
    background-color: var(--accent-color);
    transform: scaleX(0);
    transform-origin: bottom right;
    transition: transform var(--transition-normal);
}

.tx-hash:hover::after {
    transform: scaleX(1);
    transform-origin: bottom left;
}

/* ========== THEME TOGGLE ========== */
.theme-toggle {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    background: rgba(67, 97, 238, 0.1);
    color: var(--primary-color);
    width: 45px;
    height: 45px;
    border-radius: var(--radius-round);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border: 1px solid rgba(67, 97, 238, 0.2);
    transition: all var(--transition-normal);
    z-index: var(--z-above);
    box-shadow: var(--shadow-md);
}

.theme-toggle:hover {
    background: rgba(67, 97, 238, 0.2);
    box-shadow: 0 0 15px rgba(67, 97, 238, 0.4);
    transform: rotate(15deg);
}

.theme-toggle i {
    font-size: 1.2rem;
    transition: all var(--transition-normal);
}

.theme-toggle:hover i {
    color: var(--accent-color);
}

/* ========== TOOLTIP ========== */
.tooltip {
    position: relative;
    display: inline-block;
    width: 100%;
}

.tooltip .tooltip-text {
    visibility: hidden;
    width: 200px;
    background-color: var(--card-bg);
    color: var(--text-primary);
    text-align: center;
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    position: absolute;
    z-index: var(--z-above);
    bottom: 125%;
    left: 50%;
    margin-left: -100px;
    opacity: 0;
    transition: all var(--transition-normal);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    font-size: 0.9rem;
    transform: translateY(10px);
    pointer-events: none;
}

.tooltip .tooltip-text::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -8px;
    border-width: 8px;
    border-style: solid;
    border-color: var(--card-bg) transparent transparent transparent;
}

.tooltip:hover .tooltip-text {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
}

/* ========== NOTIFICATION ========== */
.notification {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    background: var(--card-bg);
    color: var(--text-primary);
    box-shadow: var(--shadow-lg);
    z-index: var(--z-overlay);
    transform: translateX(150%);
    transition: transform var(--transition-normal);
    border-left: 4px solid var(--primary-color);
    max-width: 350px;
    backdrop-filter: blur(10px);
}

.notification.show {
    transform: translateX(0);
    animation: slideIn var(--transition-normal) forwards, fadeOut 0.5s var(--transition-slow) forwards;
}

@keyframes slideIn {
    from { transform: translateX(150%); }
    to { transform: translateX(0); }
}

@keyframes fadeOut {
    from { opacity: 1; }
    to { opacity: 0; transform: translateX(150%); }
}

/* ========== RESPONSIVE DESIGN ========== */
/* Large Screens (Desktops) */
@media (max-width: 1200px) {
    .container {
        padding: var(--spacing-lg);
    }
    
    .grid {
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    }
}

/* Medium Screens (Tablets) */
@media (max-width: 992px) {
    .container {
        padding: var(--spacing-md);
    }
    
    .card {
        padding: var(--spacing-lg);
    }
    
    .wallet-section {
        padding: var(--spacing-lg);
    }
    
    .stat-number {
        font-size: 1.8rem;
    }
}

/* Small Screens (Tablets & Large Phones) */
@media (max-width: 768px) {
    .container {
        padding: var(--spacing-sm);
    }
    
    .header h1 {
        font-size: clamp(1.8rem, 4vw, 2.5rem);
    }
    
    .header p {
        font-size: 1rem;
    }
    
    .tabs {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
    
    .tab {
        margin-bottom: var(--spacing-xs);
    }
    
    .tab.active {
        transform: translateY(0);
    }
    
    .grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .brand {
        position: static;
        text-align: center;
        margin: var(--spacing-lg) auto;
        width: fit-content;
    }
    
    .theme-toggle {
        top: var(--spacing-sm);
        right: var(--spacing-sm);
    }
    
    .notification {
        top: var(--spacing-sm);
        right: var(--spacing-sm);
        max-width: calc(100% - var(--spacing-lg));
    }
    
    .contract-item {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .contract-address {
        margin-top: var(--spacing-xs);
    }
}

/* Extra Small Screens (Mobile Phones) */
@media (max-width: 576px) {
    .header::after {
        width: 60px;
    }
    
    .card {
        padding: var(--spacing-md);
        border-radius: var(--radius-md);
    }
    
    .form-group input, 
    .form-group textarea {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.9rem;
    }
    
    .stat-card {
        padding: var(--spacing-md);
    }
    
    .stat-number {
        font-size: 1.5rem;
    }
    
    .stat-label {
        font-size: 0.8rem;
    }
    
    .tooltip .tooltip-text {
        width: 160px;
        margin-left: -80px;
    }
    
    .address-display {
        font-size: 0.8rem;
        padding: var(--spacing-sm);
    }
}

/* Ensure touch targets are large enough on mobile */
@media (max-width: 768px) {
    .btn, 
    .tab,
    .theme-toggle,
    input[type="checkbox"],
    input[type="radio"],
    select {
        min-height: 44px; /* Apple's recommended minimum touch target size */
    }
    
    .form-group label {
        margin-bottom: var(--spacing-md);
    }
    
    /* Improve form usability on mobile */
    input, select, textarea {
        font-size: 16px !important; /* Prevents iOS zoom on focus */
    }
}

/* Fix for notch on iPhone X and newer */
@supports (padding: max(0px)) {
    .notification, 
    .theme-toggle {
        padding-top: max(var(--spacing-md), env(safe-area-inset-top));
        padding-right: max(var(--spacing-md), env(safe-area-inset-right));
    }
    
    .brand {
        padding-bottom: max(var(--spacing-md), env(safe-area-inset-bottom));
        padding-right: max(var(--spacing-md), env(safe-area-inset-right));
    }
    
    .container {
        padding-left: max(var(--spacing-md), env(safe-area-inset-left));
        padding-right: max(var(--spacing-md), env(safe-area-inset-right));
    }
}