* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Light Mode (Default) */
    --bg-body: #f5f7fa;
    --bg-container: #ffffff;
    --bg-surface: #fafbfc;
    --bg-elevated: #f8fafc;
    --bg-hover: #f1f5f9;
    --bg-code: #e6f7f3;
    --bg-mint-hover: #f0fdf9;
    --bg-mint-active: #e6f7f3;

    --text-primary: #2c3e50;
    --text-secondary: #4a5568;
    --text-tertiary: #718096;
    --text-muted: #a0aec0;
    --text-inverted: #ffffff;

    --teal-primary: #174A57;
    --teal-variant: #1a5563;
    --teal-dark: #0d3339;
    --mint-accent: #56D2B4;
    --mint-border: #b8e6d9;

    --border-default: #e2e8f0;
    --border-input: #cbd5e0;
    --border-focus: #56D2B4;

    --shadow-sm: rgba(0, 0, 0, 0.04);
    --shadow-md: rgba(0, 0, 0, 0.1);
    --shadow-lg: rgba(0, 0, 0, 0.3);
    --shadow-teal: rgba(23, 74, 87, 0.3);
    --shadow-mint: rgba(86, 210, 180, 0.15);

    --badge-match-bg: linear-gradient(135deg, #ffc107 0%, #ffb300 100%);
    --badge-match-text: #333333;
    --badge-match-shadow: rgba(255, 193, 7, 0.3);
    --badge-refund-bg: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    --badge-refund-text: #ffffff;
    --badge-refund-shadow: rgba(239, 68, 68, 0.3);

    --delete-text: #e53e3e;
    --delete-border: #feb2b2;
    --delete-border-hover: #fc8181;
    --delete-bg-hover: #fff5f5;
    --delete-bg-active: #fed7d7;

    color-scheme: light;
}

body.dark-mode {
    /* Dark Mode */
    --bg-body: #121212;
    --bg-container: #1E1E1E;
    --bg-surface: #242424;
    --bg-elevated: #2A2A2A;
    --bg-hover: #3A3A3A;
    --bg-code: #1a2e2a;
    --bg-mint-hover: #1a2e2a;
    --bg-mint-active: #162622;

    --text-primary: #E0E0E0;
    --text-secondary: #B0B0B0;
    --text-tertiary: #909090;
    --text-muted: #707070;
    --text-inverted: #E0E0E0;

    --teal-primary: #3A8FA3;
    --teal-variant: #4AA5B8;
    --teal-dark: #2D7A8E;
    --mint-accent: #4DBFA5;
    --mint-border: #3D9B8A;

    --border-default: #3A3A3A;
    --border-input: #4A4A4A;
    --border-focus: #4DBFA5;

    --shadow-sm: rgba(0, 0, 0, 0.3);
    --shadow-md: rgba(0, 0, 0, 0.5);
    --shadow-lg: rgba(0, 0, 0, 0.7);
    --shadow-teal: rgba(58, 143, 163, 0.4);
    --shadow-mint: rgba(77, 191, 165, 0.2);

    --badge-match-bg: linear-gradient(135deg, #D4AF37 0%, #C09A2E 100%);
    --badge-match-text: #121212;
    --badge-match-shadow: rgba(212, 175, 55, 0.3);
    --badge-refund-bg: linear-gradient(135deg, #E57373 0%, #D66060 100%);
    --badge-refund-text: #E0E0E0;
    --badge-refund-shadow: rgba(229, 115, 115, 0.3);

    --delete-text: #E57373;
    --delete-border: #8B4A4A;
    --delete-border-hover: #A55555;
    --delete-bg-hover: #2A1E1E;
    --delete-bg-active: #331A1A;

    color-scheme: dark;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-body);
    min-height: 100vh;
    padding: 0;
    color: var(--text-primary);
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    max-width: 100%;
    margin: 0 auto;
    background: var(--bg-container);
    min-height: 100vh;
    overflow-x: hidden;
    transition: background-color 0.3s ease;
}

.header {
    background: linear-gradient(135deg, var(--teal-primary) 0%, var(--teal-variant) 100%);
    color: var(--text-inverted);
    padding: 24px 16px;
    border-bottom: 4px solid var(--mint-accent);
    box-shadow: 0 2px 8px var(--shadow-md);
    position: relative;
}

.header-content {
    display: flex;
    align-items: center;
    gap: 16px;
}

.pokedex-logo {
    flex-shrink: 0;
}

.header-text {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.header h1 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 0;
    letter-spacing: -0.5px;
}

.logo-donor {
    color: var(--text-inverted);
}

.logo-dex {
    color: var(--mint-accent);
    text-shadow: 0 0 20px var(--shadow-mint);
}

.header p {
    opacity: 0.9;
    font-size: 13px;
    font-weight: 400;
    line-height: 1;
    margin: 0;
}

.header-stats {
    font-size: 13px;
    opacity: 0.85;
    margin-top: 8px;
}

.header-actions {
    display: flex;
    gap: 8px;
    margin-top: 12px;
    flex-wrap: wrap;
}

.header-btn {
    padding: 8px 16px;
    background: rgba(77, 191, 165, 0.2);
    border: 1px solid var(--mint-accent);
    border-radius: 6px;
    color: var(--text-inverted);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    display: inline-block;
}

.header-btn:hover {
    background: rgba(77, 191, 165, 0.3);
    border-color: var(--mint-accent);
}

.content {
    padding: 20px;
    overflow-x: hidden;
}

.main-search {
    margin-bottom: 30px;
}

.main-filter {
    margin-bottom: 30px;
}

.fab {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--teal-primary) 0%, var(--teal-dark) 100%);
    border: 2px solid var(--mint-accent);
    border-radius: 50%;
    color: var(--text-inverted);
    font-size: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 12px var(--shadow-lg);
    transition: all 0.3s;
    z-index: 1000;
}

.fab:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 16px var(--shadow-lg);
}

.section {
    border-bottom: 1px solid var(--border-default);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 16px;
    background: var(--bg-container);
    cursor: pointer;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
    transition: background 0.2s;
}

.section-header:hover {
    background: var(--bg-elevated);
}

.section-header:active {
    background: var(--bg-hover);
}

.section-header h2 {
    font-size: 16px;
    font-weight: 600;
    color: var(--teal-primary);
    margin: 0;
    letter-spacing: -0.3px;
}

.section-toggle {
    font-size: 20px;
    color: var(--mint-accent);
    transition: transform 0.3s ease;
    font-weight: bold;
}

.section-toggle.open {
    transform: rotate(180deg);
}

.section-content {
    padding: 20px 16px;
    display: none;
    background: var(--bg-surface);
}

.section-content.open {
    display: block;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
    margin-bottom: 16px;
}

@media (min-width: 640px) {
    .form-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .container {
        max-width: 1200px;
        border-radius: 12px;
        margin: 20px auto;
        min-height: calc(100vh - 40px);
        box-shadow: 0 4px 6px rgba(0,0,0,0.07);
    }

    .header {
        border-radius: 12px 12px 0 0;
        padding: 32px 40px;
    }

    .header h1 {
        font-size: 32px;
        margin-bottom: 10px;
    }

    .header p {
        font-size: 15px;
    }

    .section-header {
        padding: 22px 40px;
    }

    .section-content {
        padding: 32px 40px;
    }
}

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

label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
    letter-spacing: 0.3px;
}

input, select, textarea {
    padding: 12px 14px;
    border: 2px solid var(--border-input);
    border-radius: 8px;
    font-size: 15px;
    transition: all 0.2s;
    background: var(--bg-container);
    color: var(--text-primary);
    -webkit-appearance: none;
    appearance: none;
}

input[type="file"] {
    border: 2px dashed var(--border-input);
    background: var(--bg-elevated);
    cursor: pointer;
    font-size: 14px;
    padding: 16px;
    width: 100%;
    transition: all 0.2s;
}

input[type="file"]:hover {
    border-color: var(--mint-accent);
    background: var(--bg-mint-hover);
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--shadow-mint);
}

.btn {
    padding: 12px 20px;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    letter-spacing: 0.3px;
    width: 100%;
    -webkit-tap-highlight-color: transparent;
    box-shadow: 0 1px 3px var(--shadow-md);
}

@media (min-width: 640px) {
    .btn {
        width: auto;
        min-width: 140px;
    }
}

.btn-primary {
    background: linear-gradient(135deg, var(--teal-primary) 0%, var(--teal-variant) 100%);
    color: var(--text-inverted);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 8px var(--shadow-teal);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 1px 3px var(--shadow-md);
}

.btn-secondary {
    background: var(--bg-container);
    color: var(--teal-primary);
    border: 2px solid var(--border-input);
}

.btn-secondary:hover {
    border-color: var(--mint-accent);
    background: var(--bg-mint-hover);
}

.btn-secondary:active {
    background: var(--bg-mint-active);
}

.search-box {
    position: relative;
    margin-bottom: 20px;
}

.search-box input {
    width: 100%;
    padding: 14px 50px 14px 16px;
    font-size: 15px;
    border: 2px solid var(--border-input);
    border-radius: 10px;
    background: var(--bg-container);
}

.search-icon {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 20px;
    pointer-events: none;
}

.results-container {
    background: var(--bg-container);
    border: 2px solid var(--border-default);
    border-radius: 10px;
    padding: 16px;
    min-height: 150px;
}

.result-item {
    background: var(--bg-container);
    padding: 18px;
    margin-bottom: 12px;
    border-radius: 10px;
    border: 2px solid var(--border-default);
    border-left: 4px solid var(--mint-accent);
    box-shadow: 0 2px 4px var(--shadow-sm);
    transition: all 0.2s;
}

.result-item:hover {
    box-shadow: 0 4px 12px var(--shadow-md);
    border-left-color: var(--teal-primary);
}

.donor-summary {
    cursor: pointer;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

.donor-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 8px;
    gap: 12px;
    flex-wrap: wrap;
}

.expand-indicator {
    font-size: 18px;
    color: var(--mint-accent);
    transition: transform 0.3s ease;
    margin-left: 8px;
    font-weight: bold;
}

.expand-indicator.expanded {
    transform: rotate(180deg);
}

.contributions-list {
    display: none;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 2px solid var(--border-default);
    animation: slideDown 0.3s ease;
}

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

.contributions-list.expanded {
    display: block;
}

.contribution-item {
    margin-bottom: 16px;
    padding: 14px;
    background: var(--bg-elevated);
    border-radius: 8px;
    border-left: 3px solid var(--mint-accent);
}

.contribution-item:last-child {
    margin-bottom: 0;
}

.donor-name {
    font-size: 17px;
    font-weight: 700;
    color: var(--teal-primary);
    letter-spacing: -0.3px;
}

.donation-info {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
    font-size: 14px;
    color: var(--text-secondary);
}

@media (min-width: 640px) {
    .donation-info {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .donation-info {
        grid-template-columns: repeat(3, 1fr);
    }
}

.info-item {
    display: flex;
    flex-direction: column;
}

.info-label {
    font-weight: 600;
    color: var(--text-tertiary);
    font-size: 11px;
    text-transform: uppercase;
    margin-bottom: 4px;
    letter-spacing: 0.5px;
}

.info-value {
    color: var(--text-primary);
    font-weight: 500;
    word-break: break-word;
}

.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    padding: 16px 12px;
    background: var(--bg-container);
    margin: 0;
}

@media (min-width: 640px) {
    .stats {
        gap: 16px;
        padding: 24px 16px;
    }
}

@media (min-width: 1024px) {
    .stats {
        gap: 24px;
        padding: 32px 40px;
    }
}

.stat-card {
    background: linear-gradient(135deg, var(--bg-elevated) 0%, var(--bg-container) 100%);
    border: 2px solid var(--border-default);
    padding: 12px 8px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 2px 4px var(--shadow-sm);
    transition: all 0.2s;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow-mint);
    border-color: var(--mint-accent);
}

@media (min-width: 640px) {
    .stat-card {
        padding: 18px 12px;
    }
}

.stat-value {
    font-size: 20px;
    font-weight: 800;
    color: var(--teal-primary);
    margin-bottom: 4px;
    letter-spacing: -0.5px;
}

@media (min-width: 640px) {
    .stat-value {
        font-size: 28px;
        margin-bottom: 6px;
    }
}

@media (min-width: 1024px) {
    .stat-value {
        font-size: 36px;
    }
}

.stat-label {
    font-size: 10px;
    color: var(--text-tertiary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    line-height: 1.3;
}

@media (min-width: 640px) {
    .stat-label {
        font-size: 11px;
    }
}

.no-results {
    text-align: center;
    color: var(--text-muted);
    padding: 40px 20px;
    font-size: 14px;
}

.bulk-import {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 2px solid var(--border-default);
}

textarea {
    width: 100%;
    min-height: 120px;
    font-size: 13px;
    font-family: 'Courier New', monospace;
    resize: vertical;
}

.help-text {
    font-size: 12px;
    color: var(--text-tertiary);
    margin-top: 8px;
    font-style: italic;
    line-height: 1.5;
}

.button-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 16px;
}

@media (min-width: 640px) {
    .button-group {
        flex-direction: row;
        flex-wrap: wrap;
    }
}

.delete-btn {
    background: var(--bg-container);
    color: var(--delete-text);
    border: 2px solid var(--delete-border);
    padding: 8px 14px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    width: 100%;
    -webkit-tap-highlight-color: transparent;
}

.delete-btn:hover {
    background: var(--delete-bg-hover);
    border-color: var(--delete-border-hover);
}

.delete-btn:active {
    background: var(--delete-bg-active);
}

code {
    background: var(--bg-code);
    padding: 3px 8px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 12px;
    color: var(--teal-primary);
    border: 1px solid var(--mint-border);
}

select.mapper-select {
    padding: 12px 14px;
    border: 2px solid var(--border-input);
    border-radius: 8px;
    font-size: 15px;
    background: var(--bg-container);
    color: var(--text-primary);
    cursor: pointer;
}

button:disabled,
.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

button:disabled:active,
.btn:disabled:active {
    transform: none;
    box-shadow: none;
}

#pagination {
    padding: 20px 16px;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: center;
}

@media (min-width: 640px) {
    #pagination {
        flex-direction: row;
        justify-content: center;
    }
}

#pagination button {
    min-width: 100%;
}

@media (min-width: 640px) {
    #pagination button {
        min-width: 140px;
    }
}

.filter-summary {
    padding: 14px 16px;
    background: linear-gradient(135deg, var(--bg-elevated) 0%, var(--bg-container) 100%);
    border: 2px solid var(--border-default);
    border-radius: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 10px;
}

.filter-summary-text {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

.filter-controls {
    display: flex;
    gap: 10px;
    align-items: center;
    font-size: 13px;
}

@media (max-width: 640px) {
    .filter-controls {
        width: 100%;
        justify-content: space-between;
    }
}

.match-badge {
    background: var(--badge-match-bg);
    color: var(--badge-match-text);
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    margin-left: 8px;
    box-shadow: 0 2px 4px var(--badge-match-shadow);
}

.refund-badge {
    background: var(--badge-refund-bg);
    color: var(--badge-refund-text);
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    margin-left: 8px;
    box-shadow: 0 2px 4px var(--badge-refund-shadow);
}