/* ==========================================
   PREGNANCY CALCULATOR - POLISHED MASTER CSS
   ========================================== */

/* Design Tokens & Theme Variables */
:root {
    --font-primary: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Light Theme (Cozy Rose & Warm Coral) */
    --primary: #FF5E7E;
    --primary-rgb: 255, 94, 126;
    --secondary: #FF8571;
    --secondary-rgb: 255, 133, 113;
    --tertiary: #8B7BDB;
    
    --bg-app: #FFFFFB;
    --card-bg: #FFFFFF;
    --text-primary: #2E2426;
    --text-secondary: rgba(46, 36, 38, 0.6);
    --border-color: rgba(46, 36, 38, 0.08);
    --ring-track: rgba(255, 94, 126, 0.08);
    
    --tri1: #FF8FA3;
    --tri2: #FFA62B;
    --tri3: #9B5DE5;
    --completed: #4CAF50;
    
    --shadow-sm: 0 2px 8px rgba(255, 94, 126, 0.04);
    --shadow-md: 0 8px 24px rgba(46, 36, 38, 0.06);
    --shadow-lg: 0 16px 40px rgba(46, 36, 38, 0.08);
}

body.dark-mode {
    /* Dark Theme (Cosmic Mulberry & Mystic Lavender) */
    --primary: #FF9BAE;
    --primary-rgb: 255, 155, 174;
    --secondary: #FFAB9C;
    --secondary-rgb: 255, 171, 156;
    --tertiary: #C7BFFF;

    --bg-app: #1A1213;
    --card-bg: #271E20;
    --text-primary: #FBECEF;
    --text-secondary: rgba(251, 236, 239, 0.6);
    --border-color: rgba(251, 236, 239, 0.1);
    --ring-track: rgba(255, 155, 174, 0.1);
    
    --tri1: #FF8FA3;
    --tri2: #FFA62B;
    --tri3: #9B5DE5;
    --completed: #81C784;

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.4);
}

/* Base Styles & Reset */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg-app);
    color: var(--text-primary);
    line-height: 1.5;
    transition: background-color 0.3s ease, color 0.3s ease;
    padding-top: env(safe-area-inset-top);
    padding-bottom: env(safe-area-inset-bottom);
    min-height: 100vh;
}

/* App Container Layout */
.app-container {
    max-width: 600px;
    margin: 0 auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* Header styling */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 4px;
    border-bottom: 1px solid var(--border-color);
}

.header-content {
    display: flex;
    align-items: center;
    gap: 8px;
}

.brand-icon {
    color: var(--primary);
    font-size: 28px !important;
    animation: pulse 2.5s infinite alternate ease-in-out;
}

.app-header h1 {
    font-size: 14px;
    font-weight: 800;
    letter-spacing: 1.5px;
    color: var(--text-primary);
}

.theme-toggle-btn {
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--card-bg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: transform 0.2s ease, background-color 0.2s ease;
}

.theme-toggle-btn:active {
    transform: scale(0.9);
}

/* General Card Design */
.card {
    background-color: var(--card-bg);
    border-radius: 24px;
    padding: 20px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.card h2 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 4px;
}

.section-desc {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.4;
    margin-bottom: 20px;
}

.card-divider {
    height: 1px;
    background-color: var(--border-color);
    margin: 16px 0;
}

/* Input Selector / Segmented Tabs */
.tabs-container {
    display: flex;
    background-color: var(--bg-app);
    padding: 4px;
    border-radius: 16px;
    margin-bottom: 16px;
    border: 1px solid var(--border-color);
}

.tab-btn {
    flex: 1;
    border: none;
    background: none;
    font-family: var(--font-primary);
    font-size: 11px;
    font-weight: 700;
    color: var(--text-secondary);
    padding: 10px 0;
    border-radius: 12px;
    cursor: pointer;
    text-align: center;
    transition: all 0.2s ease;
}

.tab-btn.active {
    background-color: var(--primary);
    color: #FFFFFF;
    box-shadow: 0 4px 12px rgba(var(--primary-rgb), 0.2);
}

/* Tab Content & Controls */
.tab-pane {
    display: none;
    text-align: center;
}

.tab-pane.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

.tab-pane h3 {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 4px;
}

#pane-lmp h3 { color: var(--primary); }
#pane-edd h3 { color: var(--secondary); }
#pane-ga h3 { color: var(--tertiary); }

.pane-desc {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 16px;
    padding: 0 8px;
}

/* Date Picker Touch triggers */
.date-input-wrapper {
    position: relative;
    width: 100%;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    padding: 1.5px;
    cursor: pointer;
}

.date-picker-trigger {
    width: 100%;
    background-color: var(--card-bg);
    border: none;
    outline: none;
    border-radius: 14.5px;
    padding: 16px 16px 16px 48px;
    font-family: var(--font-primary);
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
    cursor: pointer;
    text-transform: uppercase;
}

.input-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--primary);
    font-size: 20px !important;
    pointer-events: none;
}

/* Stepper Box Grid */
.steppers-grid {
    display: flex;
    gap: 16px;
    margin-bottom: 16px;
}

.stepper-box {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stepper-box label {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.stepper-control {
    display: flex;
    align-items: center;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    background-color: rgba(var(--primary-rgb), 0.03);
}

.step-btn {
    border: none;
    background: none;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--primary);
}

.step-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.step-val {
    width: 48px;
    text-align: center;
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
}

/* Stepper small variant */
.stepper-control.small .step-btn {
    width: 40px;
    height: 40px;
}
.stepper-control.small .step-val {
    width: 40px;
    font-size: 16px;
}

/* As of Date Selector Row */
.as-of-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: var(--bg-app);
    border-radius: 12px;
    padding: 10px 16px;
    cursor: pointer;
    margin-top: 12px;
}

.as-of-row .material-symbols-outlined {
    color: var(--primary);
    font-size: 18px;
}

.as-of-text {
    display: flex;
    align-items: center;
    gap: 8px;
}

.as-of-text .label {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
}

.small-date-picker {
    background: none;
    border: none;
    outline: none;
    color: var(--primary);
    font-family: var(--font-primary);
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
}

/* Overview Card Status */
.overview-card {
    background-color: rgba(var(--primary-rgb), 0.04);
}

.card-caption {
    display: block;
    font-size: 11px;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: 1.5px;
    text-align: center;
    margin-bottom: 16px;
}

.overview-grid {
    display: flex;
    align-items: center;
    justify-content: space-around;
    gap: 12px;
}

/* Gauge Circle with SVG */
.gauge-container {
    position: relative;
    width: 130px;
    height: 130px;
}

.progress-ring {
    transform: rotate(-220deg);
}

.progress-ring-track {
    stroke: var(--border-color);
}

.progress-ring-sweep {
    stroke: var(--primary);
    stroke-linecap: round;
    stroke-dasharray: 351.85; /* 2 * PI * 56 */
    stroke-dashoffset: 351.85;
    transition: stroke-dashoffset 0.5s ease-out;
}

.gauge-inner {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.gauge-percent {
    font-size: 26px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1.1;
}

.gauge-sub {
    font-size: 10px;
    color: var(--text-secondary);
}

/* Overview metrics text */
.overview-stats {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.gest-age-title h2 {
    font-size: 20px;
    font-weight: 800;
    color: var(--text-primary);
}

.trimester-badge {
    display: inline-block;
    padding: 3px 8px;
    border-radius: 8px;
    font-size: 11px;
    font-weight: 700;
    margin-top: 4px;
}

.badge-first {
    background-color: rgba(255, 143, 163, 0.15);
    color: var(--tri1);
}

.badge-second {
    background-color: rgba(255, 166, 43, 0.15);
    color: var(--tri2);
}

.badge-third {
    background-color: rgba(155, 93, 229, 0.15);
    color: var(--tri3);
}

.divider {
    height: 1px;
    background-color: var(--border-color);
    width: 140px;
}

.sub-stats {
    display: flex;
    gap: 16px;
}

.sub-stats div {
    display: flex;
    flex-direction: column;
}

.stat-label {
    font-size: 9px;
    font-weight: 700;
    color: var(--text-secondary);
}

.stat-val {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-val.highlight {
    color: var(--primary);
}

/* LMP & EDD cards in bottom overview */
.dates-row {
    display: flex;
    gap: 16px;
}

.date-tile {
    flex: 1;
    background-color: var(--card-bg);
    border-radius: 16px;
    padding: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
    border: 1px solid var(--border-color);
}

.tile-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px !important;
}

.tile-icon.primary {
    background-color: rgba(var(--primary-rgb), 0.1);
    color: var(--primary);
}

.tile-icon.secondary {
    background-color: rgba(255, 133, 113, 0.1);
    color: var(--secondary);
}

.tile-meta {
    display: flex;
    flex-direction: column;
}

.tile-label {
    font-size: 9px;
    font-weight: 700;
    color: var(--text-secondary);
}

.tile-val {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-primary);
}

.tile-val.secondary-color {
    color: var(--secondary);
}

/* Baby Size Card */
.size-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.badge {
    background-color: rgba(255, 133, 113, 0.1);
    color: var(--secondary);
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 11px;
    font-weight: 700;
}

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

.emoji-container {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(255, 133, 113, 0.05), rgba(255, 94, 126, 0.15));
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.03);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 38px;
    border: 1px solid var(--border-color);
}

.size-meta {
    display: flex;
    flex-direction: column;
}

.guide-tag {
    font-size: 12px;
    color: var(--text-secondary);
}

.size-meta h3 {
    font-size: 20px;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: 1px;
    margin: 2px 0;
}

.specs-row {
    display: flex;
    gap: 12px;
    margin-top: 4px;
}

.spec-tile {
    background-color: var(--bg-app);
    padding: 3px 8px;
    border-radius: 8px;
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 700;
    color: var(--text-primary);
}

.fact-row {
    display: flex;
    gap: 8px;
    align-items: flex-start;
}

.fact-icon {
    font-size: 16px !important;
    color: var(--primary);
    margin-top: 2px;
}

.fact-text {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* Timeline/Trimester Road */
.timeline-bar-wrapper {
    margin: 16px 0;
}

.timeline-road {
    height: 8px;
    border-radius: 50px;
    background-color: var(--bg-app);
    display: flex;
    gap: 2px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.road-chunk {
    height: 100%;
}

.chunk-1 {
    flex: 13;
    background-color: var(--tri1);
    opacity: 0.2;
    transition: opacity 0.3s ease;
}

.chunk-2 {
    flex: 14;
    background-color: var(--tri2);
    opacity: 0.2;
    transition: opacity 0.3s ease;
}

.chunk-3 {
    flex: 13;
    background-color: var(--tri3);
    opacity: 0.2;
    transition: opacity 0.3s ease;
}

/* Active Highlight Chunks */
.road-chunk.active {
    opacity: 1;
}

.trimesters-grid {
    display: flex;
    gap: 12px;
}

.trimester-column {
    flex: 1;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 8px;
    text-align: center;
    background-color: transparent;
    transition: all 0.3s ease;
}

.trimester-column h4 {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-secondary);
}

.trimester-column span {
    font-size: 10px;
    color: var(--text-secondary);
}

.trimester-column.active {
    background-color: rgba(var(--primary-rgb), 0.05);
}

.trimester-column.active-tri1 {
    border-color: var(--tri1);
}
.trimester-column.active-tri1 h4, .trimester-column.active-tri1 span {
    color: var(--tri1);
    font-weight: 700;
}

.trimester-column.active-tri2 {
    border-color: var(--tri2);
}
.trimester-column.active-tri2 h4, .trimester-column.active-tri2 span {
    color: var(--tri2);
    font-weight: 700;
}

.trimester-column.active-tri3 {
    border-color: var(--tri3);
}
.trimester-column.active-tri3 h4, .trimester-column.active-tri3 span {
    color: var(--tri3);
    font-weight: 700;
}

/* Key Milestones List */
.milestones-timeline-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 16px;
}

.milestone-row {
    display: flex;
    gap: 12px;
}

.timeline-graphics {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.mile-icon-box {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background-color: var(--bg-app);
    border: 1.5px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.mile-icon-box span {
    font-size: 15px !important;
    color: var(--text-secondary);
}

.mile-icon-box.completed {
    background-color: rgba(76, 175, 80, 0.12);
    border-color: var(--completed);
}

.mile-icon-box.completed span {
    color: var(--completed);
}

.mile-line {
    width: 1.5px;
    flex-grow: 1;
    background-color: var(--border-color);
    margin-top: 4px;
}

.mile-text-box {
    flex-grow: 1;
    padding-bottom: 4px;
}

.mile-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.mile-title {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-primary);
}

.mile-date {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 700;
    color: var(--text-secondary);
}

.mile-date.highlight {
    color: var(--primary);
}

.mile-desc {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 2px;
    line-height: 1.4;
}

/* Pregnancy Planner Section */
.planner-card {
    border-color: rgba(var(--primary-rgb), 0.12);
}

.planner-tool {
    background-color: rgba(var(--primary-rgb), 0.02);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 16px;
}

.tool-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 4px;
}

.tool-header .number {
    background-color: var(--primary);
    color: #FFFFFF;
    font-size: 10px;
    font-weight: 800;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tool-header h4 {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-primary);
}

.tool-desc {
    font-size: 11px;
    color: var(--text-secondary);
    line-height: 1.3;
    margin-bottom: 12px;
}

.planner-input-group {
    margin-bottom: 12px;
}

.date-input-wrapper.small {
    border-radius: 12px;
}
.date-picker-trigger.small {
    padding: 10px 12px 10px 38px;
    font-size: 13px;
    border-radius: 10.5px;
}
.input-icon.small {
    left: 12px;
    font-size: 16px !important;
}

.planner-result-plate {
    background-color: var(--card-bg);
    border: 1.5px dashed var(--border-color);
    border-radius: 12px;
    padding: 10px 14px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.planner-result-plate p {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary);
}

.planner-result-plate h4 {
    font-size: 14px;
    font-weight: 800;
    color: var(--primary);
}

.planner-result-plate.positive h4 {
    color: var(--completed);
}

/* Weeks input row slider */
.weeks-input-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 6px 12px;
}

.weeks-input-row label {
    font-size: 11px;
    font-weight: 700;
    color: var(--text-secondary);
}

.mt-4 { margin-top: 16px; }

/* Footers */
.app-footer {
    text-align: center;
    padding: 12px 0 24px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.app-footer p {
    font-size: 10px;
    color: var(--text-secondary);
}

.dev-tag {
    font-weight: 700;
    color: var(--primary) !important;
}

/* Custom Hidden Input Style Helper for Date triggering */
.date-input-wrapper input[type="date"] {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

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

@keyframes pulse {
    from { transform: scale(1); filter: drop-shadow(0 0 2px rgba(255,94,126,0)); }
    to { transform: scale(1.08); filter: drop-shadow(0 4px 8px rgba(255,94,126,0.3)); }
}

/* Active status styles */
.road-chunk.active-tri1 {
    background-color: var(--tri1);
    opacity: 1;
}
.road-chunk.active-tri2 {
    background-color: var(--tri2);
    opacity: 1;
}
.road-chunk.active-tri3 {
    background-color: var(--tri3);
    opacity: 1;
}