/* === Modernized Period Tracker CSS === */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&family=Playfair+Display:ital,wght@0,400;0,600;1,400&display=swap');

:root {
    /* Modern Color Scheme */
    --body-bg: #f8f9fa;
    /* Light gray background */
    --card-bg: #ffffff;
    --text-color: #333333;
    /* Darker text for better contrast */
    --heading-color: #5d4157;
    /* Deeper purple-brown */

    --primary-accent: #ff8fab;
    /* Modern pink */
    --primary-accent-dark: #f25d8e;
    --primary-accent-light: #ffc2d1;
    --secondary-accent: #d0e8f2;
    /* Soft blue */
    --secondary-accent-dark: #a9c7d8;
    --secondary-accent-light: #e7f5fc;

    --period-color: #DE3163;
    /* Modern salmon*/
    --period-text: #85463d;
    --ovulation-color: #cdeac0;
    /* Fresh green */
    --ovulation-text: #3a6b35;
    --fertile-color: #fff1cf;
    /* Warm yellow */
    --fertile-text: #9c7311;

    --border-color: #e9ecef;
    --shadow-light: rgba(93, 65, 87, 0.08);
    --shadow-medium: rgba(93, 65, 87, 0.12);
    --shadow-deep: rgba(93, 65, 87, 0.18);

    /* Modern Typography */
    --font-primary: 'Outfit', sans-serif;
    --font-secondary: 'Playfair Display', serif;

    /* Animation Speeds */
    --transition-fast: 0.2s;
    --transition-normal: 0.3s;
    --transition-slow: 0.5s;
}

/* Prevent image downloading and copying */
img {
    -webkit-user-drag: none;
    -khtml-user-drag: none;
    -moz-user-drag: none;
    -o-user-drag: none;
    user-drag: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    /* Base font size */
}

body {
    font-family: var(--font-primary);
    background-color: var(--body-bg);
    color: var(--text-color);
    line-height: 1.7;
    /* padding-top has been removed to accommodate full-screen hero */
    font-weight: 400;
}

/* === Modern Header === */
.period-header {
    background-color: rgba(255, 255, 255, 0.98);
    /* Slightly transparent */
    color: var(--heading-color);
    padding: 0.8rem 2rem;
    box-shadow: 0 3px 15px rgba(93, 65, 87, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    backdrop-filter: blur(10px);
    /* Modern glass effect */
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(233, 236, 239, 0.8);
    transition: all var(--transition-normal) ease;
}

.period-header.scrolled {
    padding: 0.6rem 2rem;
    box-shadow: 0 5px 20px rgba(93, 65, 87, 0.15);
}

.period-header .logo-container {
    display: flex;
    align-items: center;
}

.period-header .site-logo {
    height: 36px;
    margin-right: 15px;
    transition: transform var(--transition-normal) ease;
}

.period-header .site-logo:hover {
    transform: scale(1.05);
}

.period-header h1 {
    font-family: var(--font-secondary);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--heading-color);
    letter-spacing: -0.5px;
    /* Tighter letter spacing for modern look */
}

.nav-link-back {
    color: var(--primary-accent);
    text-decoration: none;
    font-weight: 500;
    padding: 0.6rem 1.2rem;
    border-radius: 30px;
    transition: all var(--transition-normal) ease;
    border: 1px solid transparent;
}

.nav-link-back:hover {
    background-color: var(--primary-accent-light);
    color: var(--primary-accent-dark);
    border-color: var(--primary-accent-light);
}

/* === Modern Container === */
#period-tracker-app {
    max-width: 1200px;
    /* Slightly wider */
    margin: 0 auto;
    /* Adjusted to remove top margin */
    padding: 0 2rem;
}

/* === Modern Section Styles === */
.intro-section,
.input-section,
.calendar-section,
.info-section,
.learn-cycle-section {
    background-color: var(--card-bg);
    padding: 2.5rem;
    margin-bottom: 2.5rem;
    border-radius: 16px;
    /* Increased border radius */
    box-shadow: 0 8px 30px var(--shadow-light);
    border: 1px solid var(--border-color);
    transition: transform var(--transition-normal) ease, box-shadow var(--transition-normal) ease;
}

.intro-section:hover,
.input-section:hover,
.calendar-section:hover,
.info-section:hover,
.learn-cycle-section:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px var(--shadow-medium);
}

/* === Typography Updates === */
.intro-section h2,
.input-section h3,
.calendar-section h3,
.info-section h3,
.learn-cycle-section h3 {
    font-family: var(--font-secondary);
    color: var(--heading-color);
    margin-bottom: 1.2rem;
    font-weight: 600;
    letter-spacing: -0.3px;
    position: relative;
    display: inline-block;
}

.intro-section h2::after,
.input-section h3::after,
.calendar-section h3::after,
.info-section h3::after,
.learn-cycle-section h3::after {
    content: '';
    position: absolute;
    width: 40%;
    height: 3px;
    background: linear-gradient(to right, var(--primary-accent), transparent);
    bottom: -8px;
    left: 0;
    border-radius: 3px;
}

.intro-section h2 {
    font-size: 2.2rem;
}

.input-section h3 {
    font-size: 1.6rem;
}

.learn-cycle-section h3 {
    font-size: 1.7rem;
}

.learn-cycle-section h3 i {
    margin-right: 12px;
    color: var(--primary-accent);
    vertical-align: -0.1em;
}

.intro-section h2 i {
    margin-right: 12px;
    color: var(--primary-accent);
    vertical-align: -0.1em;
}

/* === Intro Info Card Styling === */
.intro-info-card {
    background-color: var(--body-bg);
    border-radius: 12px;
    padding: 1.5rem;
    margin: 2rem auto 0;
    max-width: 800px;
    box-shadow: 0 4px 15px var(--shadow-light);
    border: 1px solid var(--border-color);
}

.intro-main-text {
    font-size: 1.1rem;
    color: var(--text-color);
    margin-bottom: 1.2rem;
    text-align: left;
    line-height: 1.6;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.intro-main-text i {
    color: var(--primary-accent);
    margin-right: 8px;
}

.medical-disclaimer {
    background-color: #fff5e6;
    color: #b37300;
    padding: 0.8rem 1.2rem;
    border-radius: 8px;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    border-left: 4px solid #ffae42;
    text-align: left;
}

.medical-disclaimer i {
    font-size: 1.4rem;
    color: #ffae42;
}


.calendar-section h3#current-display-month-year {
    font-size: 1.6rem;
    margin: 0;
}

.calendar-section h3#current-display-month-year::after {
    display: none;
    /* Remove underline for month display */
}

.info-section h3 {
    font-size: 1.6rem;
}

/* === Form Updates === */
.input-section .form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.form-group {
    position: relative;
    /* For floating labels */
    margin-bottom: 0.5rem;
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.6rem;
    color: var(--heading-color);
    transition: all var(--transition-normal) ease;
    font-size: 0.95rem;
}

.form-group input[type="date"],
.form-group input[type="number"],
.form-group select {
    width: 100%;
    padding: 0.9rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    /* Rounder inputs */
    font-family: var(--font-primary);
    font-size: 1rem;
    background-color: #fff;
    transition: all var(--transition-normal) ease;
    color: var(--text-color);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.03);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-accent);
    box-shadow: 0 0 0 4px rgba(255, 143, 171, 0.15);
    transform: translateY(-2px);
}

/* === Modern Button Styles === */
.form-actions {
    display: flex;
    justify-content: center;
    gap: 1.2rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

#calculate-cycle-btn {
    background: linear-gradient(135deg, var(--primary-accent), var(--primary-accent-dark));
    color: white;
    font-family: var(--font-primary);
    font-weight: 600;
    font-size: 1rem;
    padding: 1rem 2rem;
    border: none;
    border-radius: 50px;
    /* Pill shaped */
    cursor: pointer;
    transition: all var(--transition-normal) ease;
    box-shadow: 0 5px 15px rgba(242, 93, 142, 0.3);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

#calculate-cycle-btn i {
    margin-right: 10px;
    transition: transform var(--transition-normal) ease;
}

#calculate-cycle-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(242, 93, 142, 0.4);
}

#calculate-cycle-btn:hover i {
    transform: translateX(3px);
}

#calculate-cycle-btn:active {
    transform: translateY(-1px);
}

#calculate-cycle-btn::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-accent-dark), var(--primary-accent));
    opacity: 0;
    z-index: -1;
    transition: opacity var(--transition-normal) ease;
}

#calculate-cycle-btn:hover::after {
    opacity: 1;
}

.secondary-action-btn {
    background-color: var(--secondary-accent-light);
    color: var(--heading-color);
    font-family: var(--font-primary);
    font-weight: 500;
    font-size: 1rem;
    padding: 1rem 2rem;
    border: 1px solid var(--secondary-accent);
    border-radius: 50px;
    cursor: pointer;
    transition: all var(--transition-normal) ease;
    box-shadow: 0 3px 10px rgba(169, 199, 216, 0.2);
}

.secondary-action-btn i {
    margin-right: 10px;
    transition: transform var(--transition-normal) ease;
}

.secondary-action-btn:hover {
    background-color: var(--secondary-accent);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(169, 199, 216, 0.3);
}

.secondary-action-btn:hover i {
    transform: translateX(3px);
}

/* === Calendar Styles Update === */
.calendar-header-controls {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.calendar-nav {
    display: flex;
    /* justify-content: space-between; /* This might be handled by parent or overridden in responsive */
    align-items: center;
    gap: 0.8rem;
    /* Added gap between buttons */
}


.calendar-nav button {
    background-color: var(--secondary-accent-light);
    color: var(--heading-color);
    font-weight: 500;
    padding: 0.7rem 1.4rem;
    border: 1px solid var(--secondary-accent);
    border-radius: 30px;
    cursor: pointer;
    transition: all var(--transition-normal) ease;
    box-shadow: 0 3px 8px rgba(169, 199, 216, 0.15);
}

.calendar-nav button:hover {
    background-color: var(--secondary-accent);
    transform: translateY(-2px);
    box-shadow: 0 5px 12px rgba(169, 199, 216, 0.25);
}

.calendar-nav button i {
    margin: 0 5px;
    transition: transform var(--transition-fast) ease;
}

.calendar-nav button:first-child:hover i {
    transform: translateX(-3px);
}

.calendar-nav button:last-child:hover i {
    transform: translateX(3px);
}

.calendar-legend {
    background-color: var(--body-bg);
    padding: 1rem 1.2rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    min-width: 240px;
    box-shadow: 0 4px 12px var(--shadow-light);
}

.calendar-legend h4 {
    font-family: var(--font-primary);
    color: var(--heading-color);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.7rem;
    display: flex;
    align-items: center;
}

.calendar-legend h4 i {
    margin-right: 8px;
    color: var(--primary-accent);
}

.calendar-legend ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.calendar-legend li {
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    margin-bottom: 0.5rem;
    color: var(--text-color);
    padding: 0.4rem 0;
    transition: transform var(--transition-fast) ease;
}

.calendar-legend li:hover {
    transform: translateX(3px);
}

.key-color {
    display: inline-block;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    /* Circular keys */
    margin-right: 10px;
    border: 1px solid rgba(0, 0, 0, 0.1);
    position: relative;
}

.key-color.period-key {
    background-color: var(--period-color);
    border-color: var(--period-text);
}

.key-color.ovulation-key {
    background-color: var(--ovulation-color);
    border-color: var(--ovulation-text);
}

.key-color.fertile-key {
    background-color: var(--fertile-color);
    border-color: var(--fertile-text);
}

.key-color.current-day-key {
    background-color: var(--secondary-accent);
    border-color: var(--secondary-accent-dark);
}

.calendars-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.calendar-instance {
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.2rem;
    background-color: #fff;
    box-shadow: 0 5px 15px var(--shadow-light);
    transition: transform var(--transition-normal) ease, box-shadow var(--transition-normal) ease;
}

.calendar-instance:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px var(--shadow-medium);
}

.calendar-instance h4 {
    text-align: center;
    font-family: var(--font-secondary);
    color: var(--heading-color);
    margin-bottom: 1.2rem;
    font-size: 1.3rem;
    font-weight: 600;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 6px;
}

.calendar-header-cell,
.calendar-day-cell {
    text-align: center;
    padding: 0.6rem 0.2rem;
    font-size: 0.9rem;
    border-radius: 8px;
}

.calendar-header-cell {
    font-weight: 600;
    color: var(--heading-color);
}

.calendar-day-cell {
    cursor: default;
    transition: all var(--transition-fast) ease;
    border: 1px solid transparent;
    height: 45px;
    /* Slightly larger */
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.calendar-day-cell:not(.empty):hover {
    transform: scale(1.1);
    box-shadow: 0 3px 10px var(--shadow-light);
    z-index: 5;
}

.calendar-day-cell.empty {
    background-color: transparent;
    cursor: default;
}

.calendar-day-cell.current-day {
    background: linear-gradient(135deg, var(--secondary-accent), var(--secondary-accent-dark)) !important;
    color: #5d4157 !important;
    font-weight: bold;
    border-color: var(--heading-color) !important;
    box-shadow: 0 4px 12px rgba(80, 100, 230, 0.3) !important;
}

.calendar-day-cell.period {
    background-color: var(--period-color);
    color: white;
    font-weight: 500;
    position: relative;
    box-shadow: 0 2px 8px rgba(255, 181, 167, 0.3);
}

.calendar-day-cell.period::after {
    content: '';
    position: absolute;
    bottom: 3px;
    left: 50%;
    transform: translateX(-50%);
    width: 5px;
    height: 5px;
    background-color: var(--period-text);
    border-radius: 50%;
}

.calendar-day-cell.ovulation {
    background-color: var(--ovulation-color);
    color: var(--ovulation-text);
    font-weight: bold;
    border: 1px dashed var(--ovulation-text);
    position: relative;
    box-shadow: 0 2px 8px rgba(205, 234, 192, 0.4);
}

.calendar-day-cell.ovulation::after {
    content: 'Ov';
    font-size: 0.7em;
    position: absolute;
    bottom: 2px;
    right: 3px;
    color: var(--ovulation-text);
    opacity: 0.7;
}

.calendar-day-cell.fertile {
    background-color: var(--fertile-color);
    color: var(--fertile-text);
    border: 1px dotted var(--fertile-text);
    box-shadow: 0 2px 8px rgba(255, 241, 207, 0.4);
}

/* === Info Section Updates === */
.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.info-card {
    background-color: var(--secondary-accent-light);
    padding: 1.8rem;
    border-radius: 12px;
    border-left: 5px solid var(--primary-accent);
    box-shadow: 0 5px 15px var(--shadow-light);
    transition: transform var(--transition-normal) ease, box-shadow var(--transition-normal) ease;
}

.info-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px var(--shadow-medium);
}

.info-card#notes-card {
    background-color: #fff5e6;
    border-left-color: #ffc080;
}

.info-card#notes-card h4 {
    color: #cc8400;
}

.info-card#notes-card h4 i {
    color: #ffae42;
}

.info-card h4 {
    font-family: var(--font-primary);
    font-weight: 600;
    color: var(--heading-color);
    margin-bottom: 0.8rem;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
}

.info-card h4 i {
    margin-right: 10px;
    color: var(--primary-accent);
    font-size: 1.3rem;
}

/* === Learn About Your Cycle Section === */
.learn-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 1.5rem;
}

.learn-card {
    background-color: var(--body-bg);
    padding: 2rem;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal) ease;
    position: relative;
    overflow: hidden;
}

.learn-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(to right, var(--primary-accent), var(--secondary-accent));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-normal) ease;
}

.learn-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 30px var(--shadow-medium);
}

.learn-card:hover::before {
    transform: scaleX(1);
}

.learn-card-icon {
    font-size: 2.2rem;
    color: var(--primary-accent);
    margin-bottom: 1rem;
    text-align: center;
    transition: transform var(--transition-normal) ease;
}

.learn-card:hover .learn-card-icon {
    transform: scale(1.2);
}

.learn-card h4 {
    font-family: var(--font-secondary);
    color: var(--heading-color);
    margin-bottom: 0.8rem;
    font-size: 1.4rem;
    text-align: center;
}

.learn-card p {
    font-size: 1rem;
    color: var(--text-color);
    line-height: 1.7;
    text-align: center;
}

.learn-card h4 {
    font-family: var(--font-secondary);
    color: var(--heading-color);
    margin-bottom: 1.2rem;
    font-weight: 600;
    letter-spacing: -0.3px;
    position: relative;
    display: inline-block;
    font-size: 1.4rem;
}

.learn-card h4::after {
    content: '';
    position: absolute;
    width: 50px;
    height: 3px;
    background: linear-gradient(to right, var(--primary-accent), var(--primary-accent-light));
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 3px;
}

/* === Full-Screen Hero Section === */
.hero-section {
    background-color: #f8f9fa;
    color: white;
    text-align: center;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow: hidden;
    height: 100vh;
    /* Full viewport height */
    width: 100%;
    min-height: 600px;
    padding: 5rem 2rem;
    margin-bottom: 2.5rem;
}

/* Background image with bannee-bg */
.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('/img/banner-bg.jpg');
    /* Replace with your actual banner background */
    background-size: cover;
    background-position: center;
    opacity: 0.5;
    /* Adjust opacity as needed */
    z-index: 1;
}

/* Animated color overlay */
.hero-section::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255, 143, 171, 0.7), rgba(208, 232, 242, 0.7));
    opacity: 0.8;
    z-index: 2;
    animation: colorPulse 10s infinite alternate;
}

@keyframes colorPulse {
    0% {
        background: linear-gradient(135deg, rgba(255, 143, 171, 0.7), rgba(208, 232, 242, 0.7));
    }

    50% {
        background: linear-gradient(135deg, rgba(208, 232, 242, 0.7), rgba(255, 143, 171, 0.7));
    }

    100% {
        background: linear-gradient(135deg, rgba(255, 143, 171, 0.7), rgba(208, 232, 242, 0.7));
    }
}

.hero-content {
    max-width: 750px;
    position: relative;
    z-index: 3;
}

.hero-content h2 {
    font-family: var(--font-secondary);
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--card-bg);
    margin-bottom: 1.5rem;
    text-shadow: 1px 1px 5px rgba(0, 0, 0, 0.2);
    line-height: 1.2;
    letter-spacing: -0.5px;
}

.hero-content p {
    font-size: 1.3rem;
    margin-bottom: 2.5rem;
    color: var(--body-bg);
    line-height: 1.7;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-button {
    background-color: white;
    color: var(--primary-accent-dark);
    padding: 1rem 2.5rem;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all var(--transition-normal) ease;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
    display: inline-block;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.cta-button i {
    margin-left: 10px;
    transition: transform var(--transition-normal) ease;
}

.cta-button:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
    color: var(--heading-color);
}

.cta-button i {
    margin-left: 10px;
    transition: transform var(--transition-normal) ease;
}

.cta-button:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
    color: var(--heading-color);
}

.cta-button:hover i {
    transform: translateX(5px);
}

.cta-button::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.2);
    z-index: -1;
    transform: scaleX(0);
    transform-origin: right;
    transition: transform var(--transition-normal) ease;
}

.cta-button:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

/* Section image*/
.section-image {
    width: 100%;
    max-width: 800px;
    height: auto;
    border-radius: 16px;
    margin: 1.5rem auto;
    display: block;
    box-shadow: 0 8px 30px var(--shadow-light);
    border: 1px solid var(--border-color);
    transition: transform var(--transition-normal) ease, box-shadow var(--transition-normal) ease;
}

.section-image:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px var(--shadow-medium);
}

/* IMG Responsive adjustments */
@media (max-width: 768px) {
    .section-image {
        border-radius: 12px;
        margin: 1rem auto;
    }
}

@media (max-width: 480px) {
    .section-image {
        border-radius: 8px;
    }
}




/* FAQ Section */
.faq-section {
    background-color: var(--card-bg);
    padding: 3rem 2.5rem;
    margin-bottom: 2.5rem;
    border-radius: 16px;
    box-shadow: 0 8px 30px var(--shadow-light);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.faq-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(to right, var(--primary-accent), var(--secondary-accent));
}

.faq-section h3 {
    font-family: var(--font-secondary);
    color: var(--heading-color);
    font-size: 2rem;
    text-align: center;
    margin-bottom: 0.5rem;
}

.faq-subtitle {
    text-align: center;
    color: var(--text-color);
    margin-bottom: 2.5rem;
    font-size: 1.1rem;
}

.faq-container {
    max-width: 900px;
    margin: 0 auto;
}

.faq-category {
    margin-bottom: 2.5rem;
}

.faq-category h4 {
    font-family: var(--font-secondary);
    color: var(--primary-accent-dark);
    font-size: 1.3rem;
    margin-bottom: 1.2rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px dashed var(--primary-accent-light);
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.faq-item {
    margin-bottom: 1rem;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 10px var(--shadow-light);
}

.faq-question {
    width: 100%;
    text-align: left;
    padding: 1.2rem 1.5rem;
    background-color: var(--body-bg);
    border: none;
    font-family: var(--font-primary);
    font-size: 1.05rem;
    font-weight: 500;
    color: var(--heading-color);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all var(--transition-fast) ease;
}

.faq-question:hover {
    background-color: var(--secondary-accent-light);
}

.faq-question i {
    transition: transform var(--transition-normal) ease;
    color: var(--primary-accent);
}

.faq-question.active {
    background-color: var(--primary-accent-light);
}

.faq-question.active i {
    transform: rotate(180deg);
}

.faq-answer {
    background-color: white;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal) ease;
}

.faq-answer p,
.faq-answer ul,
.faq-answer ol {
    padding: 0 1.5rem 1.5rem;
    line-height: 1.7;
}

.faq-answer ul,
.faq-answer ol {
    margin-left: 1.5rem;
    margin-top: 0.5rem;
}

.disclaimer,
.warning {
    background-color: #fff5f5;
    padding: 0.8rem;
    border-radius: 8px;
    border-left: 3px solid var(--primary-accent);
    margin-top: 1rem;
}

.warning {
    background-color: #fff8e6;
    border-left-color: #ffc107;
}

.faq-footer {
    text-align: center;
    margin-top: 2rem;
    font-style: italic;
    color: var(--text-color);
}

.faq-footer a {
    color: var(--primary-accent-dark);
    text-decoration: none;
    font-weight: 500;
}

.faq-footer a:hover {
    text-decoration: underline;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .faq-section {
        padding: 2rem 1.5rem;
    }

    .faq-section h3 {
        font-size: 1.7rem;
    }

    .faq-question {
        padding: 1rem;
        font-size: 1rem;
    }
}

/* === Modern Footer === */
.improved-footer {
    background-color: var(--heading-color);
    color: var(--body-bg);
    padding: 4rem 2rem 2rem;
    margin-top: 4rem;
    position: relative;
}

.improved-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 10px;
    background: linear-gradient(to right, var(--primary-accent), var(--secondary-accent));
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    max-width: 1200px;
    margin: 0 auto 2.5rem auto;
    text-align: left;
}

.footer-logo-area {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 1.5rem;
}

.footer-logo-area .footer-logo {
    height: 36px;
    transition: transform var(--transition-normal) ease;
}

.footer-logo-area .footer-logo:hover {
    transform: scale(1.05);
}

.footer-logo-area .footer-brand-name {
    font-family: var(--font-secondary);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary-accent);
}

.footer-links h4,
.footer-social h4 {
    font-family: var(--font-primary);
    font-weight: 600;
    font-size: 1.2rem;
    color: var(--primary-accent);
    margin-top: 10px;
    /* Visually aligns text with the center-aligned flex logo */
    margin-bottom: 1.5rem;
    position: relative;
}

.footer-links h4::after,
.footer-social h4::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -8px;
    width: 40px;
    height: 3px;
    background-color: var(--secondary-accent);
    border-radius: 3px;
}

.footer-links ul {
    list-style: none;
    padding: 0;
}

.footer-links li {
    margin-bottom: 0.8rem;
}

.footer-links li a {
    color: var(--body-bg);
    text-decoration: none;
    display: inline-block;
    transition: all var(--transition-normal) ease;
    padding: 0.3rem 0;
    position: relative;
}

.footer-links li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background-color: var(--primary-accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-normal) ease;
}

.footer-links li a:hover {
    color: var(--primary-accent);
}

.footer-links li a:hover::after {
    transform: scaleX(1);
}

.footer-social a {
    color: var(--secondary-accent-light);
    font-size: 1.8rem;
    margin: 0 0.75rem;
    display: inline-block;
    transition: all var(--transition-normal) ease;
}

.footer-social a:hover {
    color: var(--primary-accent);
    transform: translateY(-3px) scale(1.1);
}

.footer-bottom {
    border-top: 1px solid rgba(248, 249, 250, 0.2);
    padding-top: 2rem;
    margin-top: 2.5rem;
    text-align: center;
    font-size: 0.95rem;
    color: var(--secondary-accent-light);
}

.footer-bottom p {
    margin-bottom: 0.5rem;
}

.footer-bottom .fa-heart {
    color: var(--primary-accent);
    animation: pulse-heart 1.5s infinite;
}

@keyframes pulse-heart {
    0% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.1);
    }

    100% {
        transform: scale(1);
    }
}

/* === Responsive Adjustments === */
/* === Responsive Adjustments === */
@media (max-width: 1200px) {
    .hero-content h2 {
        font-size: 3rem;
    }

    .hero-content p {
        font-size: 1.2rem;
    }

    .intro-section h2 {
        font-size: 2rem;
    }
}

@media (max-width: 992px) {
    html {
        font-size: 15px;
    }

    .hero-content h2 {
        font-size: 2.5rem;
    }

    .hero-content p {
        font-size: 1.1rem;
    }

    .intro-section,
    .input-section,
    .calendar-section,
    .info-section,
    .learn-cycle-section {
        padding: 2rem;
    }

    .calendar-header-controls {
        flex-direction: column;
        align-items: center;
        gap: 1.5rem;
    }

    .calendar-nav {
        order: 2;
    }

    .calendar-legend {
        order: 3;
        width: 100%;
        max-width: 400px;
    }

    #current-display-month-year {
        order: 1;
    }
}

@media (max-width: 768px) {
    .period-header {
        padding: 0.8rem 1.5rem;
    }

    .period-header h1 {
        font-size: 1.5rem;
    }

    .hero-section {
        padding: 4rem 1.5rem;
        min-height: 500px;
    }

    .hero-content h2 {
        font-size: 2.2rem;
    }

    .hero-content p {
        font-size: 1rem;
        margin-bottom: 2rem;
    }

    .cta-button {
        padding: 0.9rem 2rem;
        font-size: 1rem;
    }

    #period-tracker-app {
        padding: 0 1.5rem;
    }

    .intro-section h2 {
        font-size: 1.8rem;
    }

    .input-section h3,
    .calendar-section h3,
    .info-section h3,
    .learn-cycle-section h3 {
        font-size: 1.4rem;
    }

    .form-actions {
        flex-direction: column;
        gap: 1rem;
    }

    #calculate-cycle-btn,
    .secondary-action-btn {
        width: 100%;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer-logo-area {
        text-align: left;
    }

    .footer-links h4,
    .footer-social h4 {
        text-align: left;
    }

    .footer-links h4::after,
    .footer-social h4::after {
        left: 0;
        transform: none;
    }

    .footer-links ul {
        text-align: left;
    }

    .footer-social {
        text-align: left;
    }

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

@media (max-width: 576px) {
    .period-header {
        padding: 0.8rem 1rem;
        /* Remove flex-direction: column to keep horizontal layout */
    }

    /* Remove the logo-container margin-bottom that was centering items */
    .period-header .logo-container {
        margin-bottom: 0;
    }

    .period-header .site-logo {
        height: 40px;
        margin-right: 10px;
    }

    .hero-section {
        padding: 3rem 1rem;
        min-height: 450px;
    }

    .hero-content h2 {
        font-size: 1.8rem;
    }

    .hero-content p {
        font-size: 0.95rem;
    }

    .intro-section,
    .input-section,
    .calendar-section,
    .info-section,
    .learn-cycle-section {
        padding: 1.5rem;
    }

    .calendar-nav {
        flex-wrap: wrap;
        justify-content: center;
    }

    .calendar-nav button {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }

    .calendar-day-cell {
        height: 35px;
        font-size: 0.8rem;
    }

    .calendar-day-cell.ovulation::after {
        font-size: 0.6em;
    }

    .improved-footer {
        padding: 3rem 1rem 1.5rem;
    }

    .footer-bottom {
        padding-top: 1.5rem;
        margin-top: 1.5rem;
    }
}

@media (max-width: 400px) {
    .period-header h1 {
        font-size: 1.3rem;
    }

    .nav-link-back {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }

    .hero-content h2 {
        font-size: 1.6rem;
    }

    .form-group input[type="date"],
    .form-group input[type="number"],
    .form-group select {
        padding: 0.8rem;
    }

    .calendar-legend {
        min-width: auto;
    }

    .key-color {
        width: 15px;
        height: 15px;
    }

    .calendar-instance {
        padding: 1rem;
    }
}