/* Base styles */
:root {
    --primary-bg: #f8fafc;
    --secondary-bg: #ffffff;
    --primary-text: #1e293b;
    --secondary-text: #64748b;
    --accent-color: #4f46e5;
    --accent-hover: #4338ca;
    --border-color: #e2e8f0;
    --card-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --header-gradient-from: #4f46e5;
    --header-gradient-to: #7c3aed;
}

/* Dark mode colors */
.dark-mode {
    --primary-bg: #0f172a;
    --secondary-bg: #1e293b;
    --primary-text: #f1f5f9;
    --secondary-text: #cbd5e1;
    --border-color: #334155;
}

/* Global styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    transition: background-color 0.3s, color 0.3s, border-color 0.3s;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--primary-bg);
    color: var(--primary-text);
    line-height: 1.5;
    background-image: 
        linear-gradient(45deg, transparent 48%, rgba(79, 70, 229, 0.03) 50%, transparent 52%),
        linear-gradient(-45deg, transparent 48%, rgba(79, 70, 229, 0.03) 50%, transparent 52%);
    background-size: 60px 60px;
}

section h2 {
    margin-bottom: 2rem;
}

.dark-mode body {
    background-image: 
        linear-gradient(45deg, transparent 48%, rgba(99, 102, 241, 0.05) 50%, transparent 52%),
        linear-gradient(-45deg, transparent 48%, rgba(99, 102, 241, 0.05) 50%, transparent 52%);
}

/* Header styles */
.header {
    background: linear-gradient(135deg, var(--header-gradient-from), var(--header-gradient-to));
    padding: 1.5rem 1rem;
    color: white;
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at top right, rgba(255,255,255,0.1) 0%, transparent 60%),
        repeating-linear-gradient(45deg, rgba(255,255,255,0.05) 0px, rgba(255,255,255,0.05) 2px, transparent 2px, transparent 8px);
}

.header-content {
    max-width: 80rem;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    z-index: 1;
}

.dark-mode-toggle {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: white;
    cursor: pointer;
    padding: 0.75rem;
    border-radius: 9999px;
    backdrop-filter: blur(8px);
}

.dark-mode-toggle:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.dark-mode-toggle i {
    width: 1.25rem !important;
    height: 1.25rem !important;
}

.dark-mode .moon-icon {
    display: none;
}

.dark-mode .sun-icon {
    display: inline;
}

.sun-icon {
    display: none;
}

/* Main content styles */
.main-content {
    max-width: 80rem;
    margin: 2rem auto;
    padding: 0 1rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

/* Auction section styles */
.auction-section {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.current-offer, .auction-history, .offer-section {
    background-color: var(--secondary-bg);
    border-radius: 1.5rem;
    padding: 2rem;
    box-shadow: var(--card-shadow);
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(8px);
    position: relative;
    overflow: hidden;
}

.current-offer::before, .auction-history::before, .offer-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at top right, rgba(79, 70, 229, 0.03) 0%, transparent 70%),
        repeating-linear-gradient(45deg, rgba(79, 70, 229, 0.01) 0px, rgba(79, 70, 229, 0.01) 1px, transparent 1px, transparent 4px);
    pointer-events: none;
}

.dark-mode .current-offer::before, 
.dark-mode .auction-history::before, 
.dark-mode .offer-section::before {
    background: 
        radial-gradient(circle at top right, rgba(99, 102, 241, 0.05) 0%, transparent 70%),
        repeating-linear-gradient(45deg, rgba(99, 102, 241, 0.02) 0px, rgba(99, 102, 241, 0.02) 1px, transparent 1px, transparent 4px);
}

.current-offer h2 {
    color: var(--secondary-text);
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.price {
    font-size: 3.5rem;
    font-weight: bold;
    background: linear-gradient(135deg, var(--accent-color), var(--header-gradient-to));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-top: 0.5rem;
}

/* Stages styles */
.stages {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.stages-hidden {
    display: none;
}

.stage {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem;
    background-color: var(--primary-bg);
    border-radius: 1rem;
    transition: all 0.2s;
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.stage::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent 48%, rgba(79, 70, 229, 0.03) 50%, transparent 52%);
    background-size: 10px 10px;
    pointer-events: none;
}

.stage:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border-color: var(--accent-color);
}

.stage-number {
    color: var(--accent-color);
    font-weight: 600;
}

.stage-price {
    font-size: 1.25rem;
    font-weight: bold;
    color: var(--primary-text);
}

.stage-id {
    color: var(--secondary-text);
    font-size: 0.875rem;
}

/* See More Button */
.see-more-btn {
    width: 100%;
    background: transparent;
    border: none;
    padding: 1rem;
    margin-top: 1rem;
    cursor: pointer;
    color: var(--accent-color);
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.2s;
}

.see-more-btn:hover {
    color: var(--accent-hover);
}

.see-more-icon {
    width: 1.25rem !important;
    height: 1.25rem !important;
    transition: transform 0.3s ease;
}

/* Form styles */
.offer-section form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary-text);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-group label i {
    width: 0.875rem !important;
    height: 0.875rem !important;
    color: var(--accent-color);
}

.input-wrapper {
    position: relative;
}

.input-wrapper input {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    background-color: var(--primary-bg);
    color: var(--primary-text);
    font-size: 1rem;
}

.input-wrapper input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.min-offer {
    font-size: 0.875rem;
    color: var(--secondary-text);
    margin-top: 0.5rem;
}

button[type="submit"] {
    background: linear-gradient(135deg, var(--accent-color), var(--header-gradient-to));
    color: white;
    padding: 1rem;
    border: none;
    border-radius: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 1rem;
    position: relative;
    overflow: hidden;
}

button[type="submit"]::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: repeating-linear-gradient(45deg, rgba(255,255,255,0.1) 0px, rgba(255,255,255,0.1) 1px, transparent 1px, transparent 4px);
    pointer-events: none;
}

button[type="submit"]:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.2);
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--accent-color);
    border-radius: 9999px;
}

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

/* Responsive design */
@media (max-width: 768px) {
    .main-content {
        grid-template-columns: 1fr;
    }

    .price {
        font-size: 2.5rem;
    }

    .header-content {
        padding: 0 1rem;
    }
}