/* Base & Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Palette */
    --color-bg: #F9F8F4; /* Warm ivory/off-white */
    --color-text: #111A15; /* Very dark green/black */
    --color-text-light: #4A5D53;
    
    --color-forest: #1A3626; /* Deep forest green */
    --color-leaf: #4A7856;   /* Fresh leaf green */
    --color-sky: #88A9C3;    /* Sky blue */
    --color-orange: #E07A5F; /* Warm orange */
    --color-yellow: #F4D35E; /* Soft yellow */
    
    --color-card-bg: #FFFFFF;
    --color-border: #E8E5DA;
    --color-error: #D64933;
    
    /* Spacing */
    --spacing-small: 1rem;
    --spacing-medium: 2rem;
    --spacing-large: 3rem;
    
    /* Border Radius */
    --radius-sm: 12px;
    --radius-md: 20px;
    --radius-lg: 32px;
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.25, 1, 0.5, 1);
    --transition-smooth: 0.4s cubic-bezier(0.25, 1, 0.5, 1);
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.5;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* Layout */
#app-container {
    width: 100%;
    max-width: 480px; /* Mobile first, elegant on desktop */
    height: 100vh;
    position: relative;
    overflow: hidden;
    background-color: var(--color-bg);
}

.screen {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    padding: 2rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity var(--transition-smooth), transform var(--transition-smooth), visibility var(--transition-smooth);
    z-index: 1;
}

.screen.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    z-index: 10;
}

.screen.scrollable {
    overflow-y: auto;
}

.content-wrapper {
    width: 100%;
    margin: auto 0;
}

.content-bottom {
    margin-top: auto;
    margin-bottom: 2rem;
}

.relative-z {
    position: relative;
    z-index: 5;
}

.flex-column {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.text-center { text-align: center; }

/* Utilities */
.mt-small { margin-top: var(--spacing-small); }
.mt-medium { margin-top: var(--spacing-medium); }
.mt-large { margin-top: var(--spacing-large); }
.mb-large { margin-bottom: var(--spacing-large); }
.hidden { display: none !important; }

/* Typography */
h1, h2, h3 {
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 0.05em;
    color: var(--color-forest);
    margin-bottom: var(--spacing-large);
}

.headline {
    font-size: 3.5rem;
    line-height: 1.1;
    margin-bottom: var(--spacing-small);
}

.supporting-text {
    font-size: 1.25rem;
    color: var(--color-text-light);
    max-width: 90%;
}

.subtitle {
    font-size: 0.875rem;
    color: var(--color-text-light);
    font-weight: 500;
}

.section-title {
    font-size: 2.25rem;
    line-height: 1.2;
}

/* Hero Abstract Art */
.abstract-art {
    position: absolute;
    top: 0;
    right: 0;
    width: 100%;
    height: 50%;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

.shape {
    position: absolute;
    border-radius: 50%;
}

.circle-sun {
    width: 180px;
    height: 180px;
    background: linear-gradient(135deg, var(--color-yellow), var(--color-orange));
    top: -30px;
    right: -40px;
    opacity: 0.9;
}

.hill-green {
    width: 400px;
    height: 400px;
    background-color: var(--color-leaf);
    top: 20%;
    right: -150px;
    border-radius: 40% 60% 70% 30% / 40% 50% 60% 50%;
    opacity: 0.2;
}

.hill-dark {
    width: 300px;
    height: 300px;
    background-color: var(--color-sky);
    top: 40%;
    left: -100px;
    border-radius: 60% 40% 30% 70% / 50% 40% 60% 50%;
    opacity: 0.15;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: inherit;
    font-weight: 600;
    font-size: 1.125rem;
    border-radius: var(--radius-lg);
    cursor: pointer;
    border: none;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-large {
    padding: 1.25rem 2.5rem;
}

.btn-full {
    width: 100%;
    padding: 1.25rem;
}

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

.primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(26, 54, 38, 0.15);
}

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

.secondary-btn {
    background-color: transparent;
    color: var(--color-forest);
    border: 2px solid var(--color-forest);
    padding: 1rem 2rem;
}

.text-btn {
    background: none;
    color: var(--color-text-light);
    font-weight: 500;
    padding: 1rem;
}

.text-btn:hover {
    color: var(--color-forest);
}

/* Cards System */
.cards-grid {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.cards-grid-2col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.card {
    background-color: var(--color-card-bg);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    text-align: left;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    flex-direction: column;
    box-shadow: 0 4px 12px rgba(0,0,0,0.02);
    font-family: inherit;
}

.card:hover {
    border-color: var(--color-leaf);
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(74, 120, 86, 0.1);
}

.card.selected {
    border-color: var(--color-forest);
    background-color: rgba(74, 120, 86, 0.05);
}

/* Time Cards */
.time-card {
    align-items: flex-start;
}

.time-card .card-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
}

.time-card .card-subtitle {
    font-size: 1rem;
    color: var(--color-text-light);
    margin-top: 0.25rem;
}

/* Activity Cards */
.activity-card {
    align-items: center;
    text-align: center;
    padding: 2rem 1rem;
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    transition: transform var(--transition-fast);
}

.activity-card:hover .card-icon {
    transform: scale(1.1);
}

.activity-card .card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text);
}

/* Card Specific Colors */
.card-explore:hover { border-color: var(--color-orange); box-shadow: 0 12px 24px rgba(224, 122, 95, 0.1); }
.card-nature:hover { border-color: var(--color-leaf); box-shadow: 0 12px 24px rgba(74, 120, 86, 0.1); }
.card-photography:hover { border-color: var(--color-sky); box-shadow: 0 12px 24px rgba(136, 169, 195, 0.1); }
.card-surprise:hover { border-color: var(--color-yellow); box-shadow: 0 12px 24px rgba(244, 211, 94, 0.15); }

/* Loading Animation */
.breathing-circle {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--color-leaf), var(--color-sky));
    border-radius: 50%;
    margin: 0 auto;
    animation: breathe 2s ease-in-out infinite alternate;
}

@keyframes breathe {
    0% { transform: scale(0.8); opacity: 0.5; box-shadow: 0 0 0 0 rgba(74, 120, 86, 0.4); }
    100% { transform: scale(1.1); opacity: 1; box-shadow: 0 0 20px 10px rgba(74, 120, 86, 0.1); }
}

.error-text {
    color: var(--color-error);
    font-weight: 500;
    padding: 1rem;
    background-color: rgba(214, 73, 51, 0.1);
    border-radius: var(--radius-sm);
}

/* Mission Display */
.mission-display-card {
    background-color: var(--color-bg);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.mission-badge {
    font-size: 0.875rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--color-orange);
}

.mission-title {
    font-size: 2.5rem;
    text-transform: uppercase;
    color: var(--color-forest);
}

.mission-instruction {
    font-size: 1.25rem;
    color: var(--color-text);
    font-weight: 500;
}

.mission-steps-grid {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.mission-step-card {
    background-color: var(--color-card-bg);
    padding: 1.25rem;
    border-radius: var(--radius-sm);
    border-left: 4px solid var(--color-leaf);
    box-shadow: 0 2px 8px rgba(0,0,0,0.02);
    font-weight: 500;
    color: var(--color-text);
}

.mission-footer {
    margin-top: auto;
    padding-top: var(--spacing-large);
}

.time-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background-color: white;
    padding: 0.5rem 1rem;
    border-radius: 100px;
    font-weight: 600;
    margin-bottom: 1rem;
    border: 1px solid var(--color-border);
}

/* Mission Mode (Minimal) */
.minimal-mode {
    background-color: var(--color-forest);
    color: var(--color-bg);
}

.minimal-mode .minimal-header {
    margin-top: 10vh;
}

.minimal-mode .minimal-title {
    color: var(--color-yellow);
    font-size: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.minimal-mode .minimal-instruction {
    color: var(--color-bg);
    font-size: 1.25rem;
    opacity: 0.9;
}

.minimal-timer {
    font-size: 6rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    color: var(--color-bg);
    margin: auto 0;
    letter-spacing: -0.05em;
}

.minimal-encouragement {
    color: var(--color-sky);
    font-weight: 500;
    font-size: 1.125rem;
}

.minimal-btn {
    background-color: var(--color-bg);
    color: var(--color-forest);
}

.minimal-btn:hover {
    background-color: #E8E5DA;
    transform: translateY(-2px);
}

/* Completion */
.celebration-icon {
    font-size: 4rem;
    display: inline-block;
    animation: bounce 2s infinite ease-in-out;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.reflection-card {
    background-color: white;
    padding: 1.5rem;
    border-radius: var(--radius-md);
    box-shadow: 0 4px 12px rgba(0,0,0,0.03);
}

.reflection-title {
    font-size: 1.25rem;
}

.discovery-textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 1rem;
    resize: none;
    background-color: var(--color-bg);
    outline: none;
    transition: border-color var(--transition-fast);
}

.discovery-textarea:focus {
    border-color: var(--color-forest);
}

/* Points Badge */
.points-badge {
    position: absolute;
    top: 2rem;
    right: 2rem;
    background-color: var(--color-card-bg);
    border: 2px solid var(--color-leaf);
    padding: 0.5rem 1rem;
    border-radius: 100px;
    font-weight: 700;
    color: var(--color-forest);
    z-index: 20;
    box-shadow: 0 4px 12px rgba(74, 120, 86, 0.1);
    transition: opacity var(--transition-smooth);
}

/* Modal Overlay */
.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(17, 26, 21, 0.6); /* Dark forest overlay */
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 100;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    opacity: 1;
    transition: opacity var(--transition-smooth);
}

.modal-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.modal-card {
    background-color: var(--color-bg);
    width: 100%;
    max-width: 340px;
    padding: 2.5rem 2rem;
    border-radius: var(--radius-lg);
    box-shadow: 0 24px 48px rgba(0,0,0,0.15);
    border: 2px solid var(--color-border);
    transform: translateY(0);
    transition: transform var(--transition-smooth);
}

.modal-overlay.hidden .modal-card {
    transform: translateY(20px);
}

.points-earned {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-orange);
    letter-spacing: -0.02em;
}

.points-total-text {
    font-size: 1.125rem;
    color: var(--color-text-light);
    font-weight: 500;
}

/* Desktop Polish */
@media (min-width: 768px) {
    #app-container {
        height: 90vh;
        max-height: 800px;
        max-width: 420px;
        border-radius: var(--radius-lg);
        box-shadow: 0 24px 48px rgba(0,0,0,0.08);
        border: 8px solid white;
    }
}