/* Root Variables for Consistency */
:root {
    /* Color Palette */
    --bg-primary: #0B1121;
    --bg-glass: rgba(21, 30, 50, 0.6);
    /* Semi-transparent for glass */
    --accent-mint: #00DDA2;
    --text-main: #FFFFFF;
    --text-muted: #94A3B8;

    /* Spacing System */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;

    /* SF Pro Font Stack */
    --font-main: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

/* Global Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: var(--font-main);
}

body {
    background-color: var(--bg-primary);
    color: var(--text-main);
    overflow-x: hidden;
}

/* Typography Utilities */
.mint-text {
    color: var(--accent-mint);
}

.accent {
    color: var(--accent-mint);
    font-weight: bold;
}

.hidden {
    display: none !important;
}

/* -----------------------------
   Loading Screen
------------------------------ */
#loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--bg-primary);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease-out;
}

.logo {
    font-size: 32px;
    letter-spacing: 2px;
}

/* -----------------------------
   Glassmorphism Utility
------------------------------ */
.glass-panel {
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 16px;
}

/* -----------------------------
   App Layout & Spacing
------------------------------ */
#app-content {
    padding: var(--space-md);
    padding-bottom: 100px;
    /* Room for bottom nav */
}

/* Header */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-lg);
}

.greeting h2 {
    font-size: 24px;
    margin-bottom: var(--space-xs);
}

.greeting p {
    color: var(--text-muted);
    font-size: 16px;
}

.profile-pic {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background-color: var(--text-muted);
    /* Placeholder */
}

/* Segment Control */
.segment-wrapper {
    margin-bottom: var(--space-lg);
}

.segment-control {
    display: flex;
    padding: var(--space-xs);
    border-radius: 12px;
}

.segment-btn {
    flex: 1;
    padding: 10px 0;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 14px;
    font-weight: 600;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.segment-btn.active {
    background: var(--bg-primary);
    color: var(--text-main);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

/* Date Tracker */
.date-tracker {
    display: flex;
    gap: var(--space-sm);
    overflow-x: auto;
    padding-bottom: var(--space-md);
    margin-bottom: var(--space-md);
    scrollbar-width: none;
    /* Hide scrollbar Firefox */
}

.date-tracker::-webkit-scrollbar {
    display: none;
}

/* Hide scrollbar Chrome */

.date-pill {
    min-width: 50px;
    padding: var(--space-sm) 0;
    text-align: center;
    border-radius: 12px;
    border: 1px solid rgba(148, 163, 184, 0.3);
}

.date-pill.active {
    border-color: var(--accent-mint);
    color: var(--accent-mint);
}

.date-pill .day {
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
}

.date-pill .date {
    font-size: 18px;
    font-weight: bold;
    margin-top: 4px;
}

/* Month Label */
.month-label {
    font-size: 16px;
    color: var(--text-main);
    margin-bottom: var(--space-sm);
    font-weight: 600;
    letter-spacing: 0.5px;
}

/* Updated Cards Layout using CSS Grid */
.cards-layout {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    /* Creates two equal columns */
    gap: var(--space-md);
}

.card {
    grid-column: span 2;
    /* By default, cards stretch across both columns */
    height: 120px;
    border-radius: 16px;
    padding: var(--space-md);
    display: flex;
    flex-direction: column;
}

.card h4 {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: var(--space-sm);
}

/* Target exactly the 2nd and 3rd cards to be side-by-side squares */
.card:nth-child(2),
.card:nth-child(3) {
    grid-column: span 1;
    /* These only take up one column each */
    aspect-ratio: 1 / 1;
    /* Forces them to be perfect squares */
    height: auto;
    /* Overrides the 120px height so they scale perfectly */
}

/* Bottom Navigation */
.bottom-nav {
    position: fixed;
    bottom: var(--space-md);
    left: var(--space-md);
    right: var(--space-md);
    display: flex;
    justify-content: space-around;
    padding: var(--space-md);
    border-radius: 24px;
    z-index: 100;
}

.nav-item {
    font-size: 12px;
    color: var(--text-muted);
}

.nav-item.active {
    color: var(--accent-mint);
    font-weight: bold;
}

/* Card 1: Momentum Structure */
.momentum-card {
    height: auto;
    /* Lets the card expand dynamically based on contents */
    min-height: 220px;
}

.momentum-layout {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    margin-top: var(--space-sm);
}


/* 1. The Rings Container */
.rings-container {
    position: relative;
    /* Crucial: Keeps the absolute text trapped inside this box */
    display: flex;
    justify-content: center;
    align-items: center;
    width: 160px;
    height: 160px;
}

/* 2. The SVG Canvas */
.progress-rings {
    transform: rotate(-90deg);
}

/* 3. The Tracks (Faint background circles) */
.ring-track {
    fill: none !important;
    /* Kills the default black void */
    stroke: rgba(148, 163, 184, 0.1);
    stroke-width: 8px !important;
    /* Thickens the lines */
}

/* 4. The Fills (The neon progress lines) */
.ring-fill {
    fill: none !important;
    /* Kills the default black void */
    stroke-width: 8px !important;
    /* Thickens the lines */
    stroke-linecap: round;
    transition: stroke-dashoffset 1.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 5. The Center Text */
.momentum-score {
    position: absolute;
    /* Forces the text to float dead-center over the rings */
    display: flex;
    flex-direction: column;
    align-items: center;
    line-height: 1;
}

#score-value {
    font-size: 28px;
    /* Slightly bigger for the new 160px size */
    font-weight: 700;
    color: var(--text-main);
}

.score-label {
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 2px;
}

/* Updated Math for Bigger Rings (C = 2 * pi * r) */
/* Academics: r=70 (Circumference: 440) */
.ring-academics {
    stroke: #00D4FF;
    stroke-dasharray: 440;
    stroke-dashoffset: 440;
}

/* Skills: r=50 (Circumference: 314) */
.ring-skills {
    stroke: #9D4EDD;
    stroke-dasharray: 314;
    stroke-dashoffset: 314;
}

/* Habits: r=30 (Circumference: 188) */
.ring-habits {
    stroke: var(--accent-mint);
    stroke-dasharray: 188;
    stroke-dashoffset: 188;
}

/* The Graph Structure & Axes */
.graph-section {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.graph-title {
    font-size: 10px;
    color: var(--text-muted);
    text-transform: uppercase;
    margin-bottom: 8px;
    letter-spacing: 0.5px;
}

.graph-axes-container {
    display: flex;
    height: 120px;
    /* Gives the bars actual room to grow */
}

/* Y-Axis Line */
.y-axis {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    font-size: 8px;
    color: var(--text-muted);
    padding-right: 6px;
    border-right: 1px solid rgba(148, 163, 184, 0.3);
    text-align: right;
}

/* X-Axis Line */
.x-axis-content {
    flex: 1;
    display: flex;
    align-items: flex-end;
    border-bottom: 1px solid rgba(148, 163, 184, 0.3);
    padding-left: 8px;
    padding-bottom: 4px;
}

.graph-bars {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    width: 100%;
    height: 100%;
}

/* --- GRAPH HEIGHT FIX --- */
.bar-wrapper {
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    /* Forces bars to grow from the bottom up */
    align-items: center;
    gap: 6px;
    flex: 1;
    height: 100%;
    /* CRITICAL: Gives the percentage heights a canvas to draw on */
}

.bar {
    width: 10px;
    /* Made slightly thicker so they are highly visible */
    background: var(--bg-glass);
    border-radius: 4px;
    transition: height 1s cubic-bezier(0.4, 0, 0.2, 1);
    min-height: 4px;
    /* Ensures even a 0-point day has a tiny visible dot */
}

/* Ensure the active/today bar pops */
.bar.active {
    background: var(--accent-mint);
    box-shadow: 0 0 8px rgba(0, 221, 162, 0.4);
}

.day-label {
    font-size: 10px;
    color: var(--text-muted);
}

/* --- TASKS VIEW --- */
.task-lane {
    margin-bottom: var(--space-xl);
}

.lane-header {
    margin-bottom: var(--space-md);
}

.lane-header h3 {
    font-size: 20px;
    letter-spacing: 0.5px;
}

.lane-subtitle {
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Input Box */
.add-task-box {
    display: flex;
    padding: var(--space-xs);
    margin-bottom: var(--space-md);
}

#new-habit-input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-main);
    padding: var(--space-sm) var(--space-md);
    font-size: 14px;
    outline: none;
}

#new-habit-input::placeholder {
    color: var(--text-muted);
}

#btn-add-habit {
    background: var(--bg-primary);
    color: var(--accent-mint);
    border: none;
    width: 36px;
    height: 36px;
    border-radius: 10px;
    font-size: 20px;
    font-weight: bold;
    cursor: pointer;
}

/* Habit List & Custom Checkboxes */
.habit-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.habit-item {
    display: flex;
    align-items: center;
    padding: var(--space-md);
    background: var(--bg-glass);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

/* Hide the default ugly browser checkbox */
.habit-item input[type="checkbox"] {
    display: none;
}

/* Create our own custom neon circle checkbox */
.custom-checkbox {
    width: 24px;
    height: 24px;
    border: 2px solid var(--text-muted);
    border-radius: 50%;
    margin-right: var(--space-md);
    transition: all 0.2s ease;
    display: flex;
    justify-content: center;
    align-items: center;
}

.habit-item.completed .custom-checkbox {
    border-color: var(--accent-mint);
    background: var(--accent-mint);
}

/* The checkmark inside the circle */
.custom-checkbox::after {
    content: '✓';
    color: var(--bg-primary);
    font-size: 14px;
    font-weight: bold;
    opacity: 0;
}

.habit-item.completed .custom-checkbox::after {
    opacity: 1;
}

.habit-text {
    font-size: 16px;
    color: var(--text-main);
    transition: color 0.2s;
}

.habit-item.completed .habit-text {
    color: var(--text-muted);
    text-decoration: line-through;
}

/* --- View More Constraint System --- */
.habit-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

/* When collapsed, hide any habit item that is the 5th child or greater */
.habit-list.collapsed .habit-item:nth-child(n+5) {
    display: none;
}

.view-more-container {
    display: flex;
    justify-content: center;
    margin-top: var(--space-sm);
}

#btn-view-more-habits {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    padding: 8px 16px;
    transition: color 0.3s;
}

#btn-view-more-habits:active {
    color: var(--accent-mint);
}

/* Delete Button */
.delete-habit-btn {
    margin-left: auto;
    /* Pushes the button to the far right */
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 20px;
    cursor: pointer;
    padding: 0 8px;
    transition: color 0.2s;
}

.delete-habit-btn:hover {
    color: #EF4444;
    /* Red on hover */
}

/* --- LINE GRAPH STYLING --- */
.graph-labels-container {
    display: flex;
    justify-content: space-between;
    width: 100%;
    margin-top: 6px;
}

.graph-labels-container .day-label {
    font-size: 10px;
    color: var(--text-muted);
    width: 14px;
    text-align: center;
    font-weight: 600;
}

.graph-line {
    fill: none;
    stroke: var(--accent-mint);
    stroke-width: 2px;
}

.graph-dot {
    fill: var(--bg-primary);
    stroke: var(--accent-mint);
    stroke-width: 2px;
}

.graph-dot.today-dot {
    fill: var(--accent-mint);
    /* Solid mint for today */
}

.today-bar {
    fill: rgba(0, 221, 162, 0.15);
    /* Faint mint glowing column */
}