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

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #ec4899;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border: #334155;
    --shadow: rgba(0, 0, 0, 0.3);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: var(--text-primary);
    min-height: 100vh;
    padding: 20px;
    line-height: 1.6;
}

.container {
    max-width: 800px;
    margin: 0 auto;
}

header {
    text-align: center;
    margin-bottom: 40px;
    padding: 30px 20px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: 20px;
    box-shadow: 0 20px 60px var(--shadow);
}

h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.subtitle {
    font-size: 1.1rem;
    opacity: 0.95;
    font-weight: 300;
}

h2 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.user-selector {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
    background: var(--bg-secondary);
    padding: 10px;
    border-radius: 15px;
}

.user-btn {
    flex: 1;
    padding: 15px;
    border: none;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.user-btn:hover {
    background: var(--bg-primary);
    transform: translateY(-2px);
}

.user-btn.active {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    box-shadow: 0 5px 15px rgba(99, 102, 241, 0.4);
}

.settings-section {
    background: var(--bg-secondary);
    padding: 25px;
    border-radius: 15px;
    margin-bottom: 30px;
    box-shadow: 0 10px 30px var(--shadow);
}

.name-inputs {
    display: grid;
    gap: 20px;
}

.name-input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.name-input-group label {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.name-input-group input {
    padding: 12px 15px;
    border: 2px solid var(--border);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-radius: 10px;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.name-input-group input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.add-task-section {
    background: var(--bg-secondary);
    padding: 25px;
    border-radius: 15px;
    margin-bottom: 30px;
    box-shadow: 0 10px 30px var(--shadow);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--border);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-radius: 10px;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.spicy-selector {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.spicy-selector input[type="radio"] {
    display: none;
}

.spicy-option {
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border: 2px solid var(--border);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1.2rem;
    user-select: none;
}

.spicy-option:hover {
    background: var(--bg-primary);
    transform: translateY(-2px);
}

.spicy-selector input[type="radio"]:checked + .spicy-option {
    background: linear-gradient(135deg, #f59e0b 0%, #dc2626 100%);
    border-color: #f59e0b;
    box-shadow: 0 5px 15px rgba(245, 158, 11, 0.4);
    transform: scale(1.05);
}

.love-selector {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.love-selector input[type="radio"] {
    display: none;
}

.love-option {
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border: 2px solid var(--border);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1.2rem;
    user-select: none;
}

.love-option:hover {
    background: var(--bg-primary);
    transform: translateY(-2px);
}

.love-selector input[type="radio"]:checked + .love-option {
    background: linear-gradient(135deg, #ec4899 0%, #be185d 100%);
    border-color: #ec4899;
    box-shadow: 0 5px 15px rgba(236, 72, 153, 0.4);
    transform: scale(1.05);
}

.task-levels {
    display: flex;
    gap: 15px;
    margin-bottom: 10px;
}

.task-spicy,
.task-love {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 1rem;
}

.btn-primary {
    width: 100%;
    padding: 15px;
    border: none;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

.tasks-section,
.completed-section {
    background: var(--bg-secondary);
    padding: 25px;
    border-radius: 15px;
    margin-bottom: 30px;
    box-shadow: 0 10px 30px var(--shadow);
}

.tasks-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 15px;
}

.filter-buttons {
    display: flex;
    gap: 8px;
}

.filter-btn {
    padding: 8px 16px;
    border: 2px solid var(--border);
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-btn:hover {
    background: var(--bg-primary);
}

.filter-btn.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.tasks-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.task-card {
    background: var(--bg-tertiary);
    padding: 20px;
    border-radius: 12px;
    border-left: 4px solid var(--primary);
    transition: all 0.3s ease;
    animation: slideIn 0.3s ease;
}

.task-card:hover {
    transform: translateX(5px);
    box-shadow: 0 5px 20px var(--shadow);
}

.task-card.person2 {
    border-left-color: var(--secondary);
}

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

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

.task-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    flex: 1;
}

.task-assignee {
    display: inline-block;
    padding: 4px 12px;
    background: var(--primary);
    color: white;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.task-card.person2 .task-assignee {
    background: var(--secondary);
}

.task-reward {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 15px;
    color: var(--warning);
    font-weight: 600;
}

.task-actions {
    display: flex;
    gap: 10px;
}

.btn-complete,
.btn-delete,
.btn-redeem {
    flex: 1;
    padding: 10px;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-complete {
    background: var(--success);
    color: white;
}

.btn-complete:hover {
    background: #059669;
    transform: translateY(-2px);
}

.btn-redeem {
    background: linear-gradient(135deg, var(--warning) 0%, #ea580c 100%);
    color: white;
}

.btn-redeem:hover {
    background: linear-gradient(135deg, #ea580c 0%, #c2410c 100%);
    transform: translateY(-2px);
}

.btn-delete {
    background: var(--danger);
    color: white;
}

.btn-delete:hover {
    background: #dc2626;
    transform: translateY(-2px);
}

.completed-task {
    opacity: 0.8;
    border-left-color: var(--success);
}

.completed-task .task-title {
    text-decoration: line-through;
}

.empty-state {
    text-align: center;
    color: var(--text-muted);
    padding: 40px;
    font-style: italic;
}

@media (max-width: 768px) {
    body {
        padding: 15px;
    }

    h1 {
        font-size: 2rem;
    }

    .subtitle {
        font-size: 1rem;
    }

    header {
        padding: 25px 15px;
        margin-bottom: 25px;
    }

    .add-task-section,
    .tasks-section,
    .completed-section,
    .settings-section {
        padding: 20px;
    }

    .tasks-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .filter-buttons {
        width: 100%;
        justify-content: space-between;
    }

    .filter-btn {
        flex: 1;
        padding: 10px 12px;
        font-size: 0.85rem;
    }

    .task-card {
        padding: 15px;
    }

    .task-title {
        font-size: 1.1rem;
    }

    .name-inputs {
        gap: 15px;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.75rem;
    }

    .task-header {
        flex-direction: column;
        gap: 10px;
    }

    .task-actions {
        flex-direction: column;
    }

    .btn-complete,
    .btn-delete,
    .btn-redeem {
        width: 100%;
    }
}

/* PIN Lock Screen */
#pin-lock {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    padding: 20px;
}

#pin-lock.unlock {
    animation: fadeOut 0.5s ease forwards;
}

@keyframes fadeOut {
    to {
        opacity: 0;
    }
}

.pin-container {
    background: var(--bg-secondary);
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    max-width: 400px;
    width: 100%;
}

.pin-container.shake {
    animation: shake 0.5s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-10px); }
    20%, 40%, 60%, 80% { transform: translateX(10px); }
}

.pin-header {
    text-align: center;
    margin-bottom: 30px;
}

.pin-icon {
    font-size: 4rem;
    margin-bottom: 15px;
}

.pin-header h1 {
    font-size: 2rem;
    margin-bottom: 10px;
}

.pin-header p {
    color: var(--text-secondary);
    font-size: 1rem;
}

.pin-display {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 15px;
}

.pin-dot {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 3px solid var(--border);
    transition: all 0.3s ease;
}

.pin-dot.filled {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-color: var(--primary);
    box-shadow: 0 0 15px rgba(99, 102, 241, 0.5);
}

.pin-error {
    text-align: center;
    color: var(--danger);
    font-weight: 600;
    margin-bottom: 20px;
    height: 20px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.pin-error.show {
    opacity: 1;
}

.pin-pad {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
}

.pin-btn {
    padding: 20px;
    font-size: 1.5rem;
    font-weight: 700;
    border: none;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.pin-btn:hover {
    background: var(--bg-primary);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.pin-btn:active {
    transform: translateY(0);
}

.pin-clear,
.pin-delete {
    font-size: 1rem;
}

/* Reward Coupon Modal */
#reward-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    padding: 20px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

#reward-modal.show {
    opacity: 1;
}

.reward-coupon {
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    border-radius: 20px;
    max-width: 500px;
    width: 100%;
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5);
    overflow: hidden;
    animation: bounceIn 0.5s ease;
}

@keyframes bounceIn {
    0% {
        transform: scale(0.3);
        opacity: 0;
    }
    50% {
        transform: scale(1.05);
    }
    70% {
        transform: scale(0.9);
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

.coupon-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    padding: 25px;
    text-align: center;
}

.coupon-ribbon {
    color: white;
    font-size: 1.2rem;
    font-weight: 800;
    letter-spacing: 2px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.coupon-content {
    padding: 40px 30px;
    text-align: center;
    color: #1e293b;
}

.coupon-icon {
    font-size: 5rem;
    margin-bottom: 20px;
    animation: pulse 2s ease infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

.coupon-title {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: #334155;
}

.coupon-reward {
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 20px;
    line-height: 1.2;
    padding: 0 20px;
}

.coupon-levels {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-bottom: 20px;
}

.coupon-spicy,
.coupon-love {
    font-size: 2rem;
}

.coupon-assignee {
    font-size: 1.3rem;
    font-weight: 600;
    color: #475569;
    margin-bottom: 10px;
}

.coupon-date {
    font-size: 0.9rem;
    color: #94a3b8;
    margin-bottom: 30px;
}

.coupon-close {
    width: calc(100% - 60px);
    margin: 0 30px 30px 30px;
    padding: 15px;
    border: none;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
}

.coupon-close:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
}

.coupon-close:active {
    transform: translateY(0);
}

/* Tab Navigation */
.tab-navigation {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
    background: var(--bg-secondary);
    padding: 10px;
    border-radius: 15px;
}

.tab-btn {
    flex: 1;
    padding: 15px;
    border: none;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.tab-btn:hover {
    background: var(--bg-primary);
    transform: translateY(-2px);
}

.tab-btn.active {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    box-shadow: 0 5px 15px rgba(99, 102, 241, 0.4);
}

.tab-content {
    display: none;
}

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

/* Lovebucks Section */
.lovebucks-header {
    margin-bottom: 30px;
}

.balance-section {
    background: var(--bg-secondary);
    padding: 25px;
    border-radius: 15px;
    box-shadow: 0 10px 30px var(--shadow);
}

.balances {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.balance-card {
    background: var(--bg-tertiary);
    padding: 25px;
    border-radius: 12px;
    text-align: center;
    border-left: 4px solid var(--primary);
    transition: all 0.3s ease;
}

.balance-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px var(--shadow);
}

.balance-card.person2 {
    border-left-color: var(--secondary);
}

.balance-name {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.balance-amount {
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
}

.balance-label {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.lovebucks-tasks-section,
.lovebucks-active-section,
.rewards-store-section {
    background: var(--bg-secondary);
    padding: 25px;
    border-radius: 15px;
    margin-bottom: 30px;
    box-shadow: 0 10px 30px var(--shadow);
}

.lovebucks-points {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--warning);
    margin-bottom: 15px;
}

/* Store Section */
.store-actions {
    margin-bottom: 20px;
}

.btn-secondary {
    padding: 12px 25px;
    border: none;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(99, 102, 241, 0.3);
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
}

.store-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.store-item {
    background: var(--bg-tertiary);
    padding: 20px;
    border-radius: 12px;
    border: 2px solid var(--border);
    transition: all 0.3s ease;
}

.store-item:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px var(--shadow);
}

.store-item-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 15px;
}

.store-item-name {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    flex: 1;
}

.store-item-cost {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--warning);
}

.store-item-description {
    color: var(--text-secondary);
    margin-bottom: 15px;
    font-size: 0.9rem;
}

.store-item-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.btn-buy {
    flex: 1;
    padding: 10px;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 100px;
}

.btn-person1 {
    background: var(--primary);
    color: white;
}

.btn-person1:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.btn-person2 {
    background: var(--secondary);
    color: white;
}

.btn-person2:hover {
    background: #be185d;
    transform: translateY(-2px);
}

.btn-delete-small {
    padding: 10px 15px;
    border: none;
    background: var(--danger);
    color: white;
    border-radius: 8px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-delete-small:hover {
    background: #dc2626;
    transform: translateY(-2px);
}

/* Modal Input Styles */
.modal-input {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--border);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-radius: 10px;
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s ease;
}

.modal-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

textarea.modal-input {
    resize: vertical;
    min-height: 80px;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .tab-navigation {
        gap: 5px;
    }

    .tab-btn {
        padding: 12px;
        font-size: 0.9rem;
    }

    .balances {
        grid-template-columns: 1fr;
    }

    .store-grid {
        grid-template-columns: 1fr;
    }

    .store-item-actions {
        flex-direction: column;
    }

    .btn-buy {
        width: 100%;
    }
}