@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;600;700&display=swap');

:root {
    --bg-color: #121214;
    --card-bg: #1c1c1f;
    --card-border: rgba(255, 255, 255, 0.06);
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    
    --primary: #6366f1; /* Soothing Indigo */
    --primary-glow: rgba(99, 102, 241, 0.15);
    --success: #10b981; /* Teal/Green */
    --warning: #f59e0b; /* Amber */
    --danger: #ef4444; /* Coral */
    
    --nav-bg: rgba(20, 20, 22, 0.85);
    --header-bg: #17171a;
    --border-radius: 12px;
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.5;
    overflow: hidden;
}

/* App Shell Layout */
.app-layout {
    display: flex;
    flex-direction: column;
    height: 100vh;
    width: 100vw;
}

/* Header */
.app-header {
    background-color: var(--header-bg);
    border-bottom: 1px solid var(--card-border);
    padding: 1.25rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 10;
}

.header-logo {
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.logo-accent {
    color: var(--primary);
}

.header-status {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.04);
    padding: 0.35rem 0.75rem;
    border-radius: 20px;
    border: 1px solid var(--card-border);
}

/* Main Area */
.app-main {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
    padding-bottom: 5.5rem; /* Space for bottom nav */
}

/* Bottom Navigation */
.app-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 4.25rem;
    background-color: var(--nav-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-top: 1px solid var(--card-border);
    display: flex;
    justify-content: space-around;
    align-items: center;
    padding: 0.5rem 1rem;
    z-index: 100;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.75rem;
    font-weight: 600;
    width: 25%;
    height: 100%;
    border-radius: 8px;
    transition: var(--transition);
}

.nav-icon {
    width: 1.4rem;
    height: 1.4rem;
    margin-bottom: 0.25rem;
    transition: var(--transition);
}

.nav-item:hover {
    color: var(--text-primary);
}

.nav-item.active {
    color: var(--primary);
}

.nav-item.active .nav-icon {
    stroke: var(--primary);
    transform: scale(1.08);
}

/* Typography & Headers */
h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -0.01em;
}

.subtitle {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

/* Checklist Cards */
.checklist-category-title {
    font-size: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

.checklist-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.checklist-card {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius);
    padding: 1rem 1.25rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: var(--transition);
    cursor: pointer;
}

.checklist-card:hover:not(.locked) {
    border-color: rgba(99, 102, 241, 0.4);
    background: rgba(99, 102, 241, 0.02);
}

.card-left {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex: 1;
}

.checkbox-custom {
    width: 1.5rem;
    height: 1.5rem;
    border-radius: 6px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    flex-shrink: 0;
}

.checklist-card.checked .checkbox-custom {
    background-color: var(--success);
    border-color: var(--success);
    box-shadow: 0 0 10px rgba(16, 185, 129, 0.3);
}

.checkbox-icon {
    width: 0.9rem;
    height: 0.9rem;
    stroke: white;
    stroke-width: 3px;
    display: none;
}

.checklist-card.checked .checkbox-icon {
    display: block;
}

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

.item-name {
    font-size: 1.05rem;
    font-weight: 600;
    transition: var(--transition);
}

.checklist-card.checked .item-name {
    text-decoration: line-through;
    color: var(--text-secondary);
}

.item-desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 0.15rem;
}

/* Lock state card styling */
.checklist-card.locked {
    opacity: 0.45;
    cursor: not-allowed;
    background: rgba(255, 255, 255, 0.01);
}

.lock-badge {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--warning);
    background: rgba(245, 158, 11, 0.1);
    padding: 0.25rem 0.5rem;
    border-radius: 6px;
    border: 1px solid rgba(245, 158, 11, 0.15);
}

.lock-icon {
    width: 0.85rem;
    height: 0.85rem;
}

/* Warnings / Info Banners */
.warning-banner {
    background: rgba(245, 158, 11, 0.08);
    border: 1px solid rgba(245, 158, 11, 0.2);
    border-radius: var(--border-radius);
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
    display: flex;
    gap: 0.75rem;
    animation: fadeIn 0.3s ease;
}

.warning-banner-icon {
    width: 1.5rem;
    height: 1.5rem;
    color: var(--warning);
    flex-shrink: 0;
}

.warning-banner-content h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--warning);
    margin-bottom: 0.25rem;
}

.warning-banner-content p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* Coffee Quick Log Module */
.coffee-log-card {
    background: linear-gradient(135deg, #1f1d24 0%, #17151a 100%);
    border: 1px solid rgba(245, 158, 11, 0.1);
    border-radius: var(--border-radius);
    padding: 1.25rem;
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.coffee-info h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #e28743; /* Coffee warm color */
}

.coffee-info p {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 0.2rem;
}

.btn-coffee {
    background-color: #e28743;
    color: white;
    font-weight: 600;
    border: none;
    padding: 0.6rem 1.25rem;
    border-radius: 8px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-coffee:hover {
    background-color: #cd722e;
    transform: translateY(-1px);
}

/* Accordion Research Styles */
.research-container {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.accordion-item {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: var(--transition);
}

.accordion-header {
    padding: 1.25rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-weight: 600;
    font-size: 1.1rem;
    transition: var(--transition);
}

.accordion-header:hover {
    background-color: rgba(255, 255, 255, 0.02);
}

.accordion-arrow {
    width: 1.25rem;
    height: 1.25rem;
    transition: transform 0.3s ease;
    stroke: var(--text-secondary);
}

.accordion-item.active .accordion-arrow {
    transform: rotate(180deg);
    stroke: var(--primary);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.accordion-body {
    padding: 1.25rem;
    padding-top: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.03);
    font-size: 0.92rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Research summary content styling */
.accordion-body h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-top: 1.25rem;
    margin-bottom: 0.5rem;
}

.accordion-body h3:first-of-type {
    margin-top: 0.75rem;
}

.accordion-body ul, .accordion-body ol {
    margin-left: 1.25rem;
    margin-bottom: 1rem;
}

.accordion-body li {
    margin-bottom: 0.4rem;
}

.accordion-body p {
    margin-bottom: 1rem;
}

.accordion-body strong {
    color: var(--text-primary);
}

/* Timeline/Dosing Log */
.timeline-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.timeline-card {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius);
    padding: 1.25rem;
    display: flex;
    gap: 1rem;
}

.timeline-time {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary);
    flex-shrink: 0;
    width: 60px;
    text-align: right;
    padding-top: 0.1rem;
}

.timeline-details {
    display: flex;
    flex-direction: column;
    flex: 1;
}

.timeline-title {
    font-weight: 600;
    font-size: 1.05rem;
}

.timeline-meta {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

.warning-indicator {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    color: var(--warning);
    font-weight: 600;
    font-size: 0.75rem;
    margin-top: 0.4rem;
}

.warning-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--warning);
}

.empty-state {
    text-align: center;
    padding: 3rem 1.5rem;
    color: var(--text-secondary);
}

.empty-icon {
    width: 3rem;
    height: 3rem;
    stroke: rgba(255, 255, 255, 0.1);
    margin-bottom: 1rem;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-4px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Responsive Overrides for Desktop (Tablet & up) */
@media (min-width: 768px) {
    .app-layout {
        display: grid;
        grid-template-columns: 260px 1fr;
        grid-template-rows: auto 1fr;
        grid-template-areas:
            "header header"
            "nav main";
        height: 100vh;
    }
    
    .app-header {
        grid-area: header;
    }
    
    .app-nav {
        grid-area: nav;
        position: static;
        flex-direction: column;
        height: 100%;
        width: 100%;
        border-top: none;
        border-right: 1px solid var(--card-border);
        justify-content: flex-start;
        padding: 2rem 1rem;
        gap: 0.5rem;
        background-color: var(--header-bg);
    }
    
    .nav-item {
        width: 100%;
        height: 3rem;
        flex-direction: row;
        justify-content: flex-start;
        padding: 0 1rem;
        gap: 0.75rem;
        font-size: 0.95rem;
    }
    
    .nav-icon {
        margin-bottom: 0;
    }
    
    .app-main {
        grid-area: main;
        padding: 2.5rem;
        padding-bottom: 2.5rem;
        max-width: 900px;
        width: 100%;
        margin: 0 auto;
    }
    
    .checklist-group {
        grid-template-columns: repeat(2, 1fr);
    }
}