/* Base Styles */
:root {
    --primary-blue: #000091;
    --primary-red: #E1000F;
    --white: #ffffff;
    --light-gray: #f5f5f7;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, sans-serif;
}

body {
    background-color: var(--white);
    color: #333;
    line-height: 1.6;
}

/* App Layout */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.banner img {
    width: 100%;
    height: auto;
    display: block;
}

.working-frame {
    padding: 20px;
    flex: 1;
}

/* Header Styles */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid #ddd;
}

header h1 {
    color: var(--primary-blue);
    font-size: 1.5rem;
    font-weight: 600;
}

/* Burger Menu */
.menu-toggle {
    width: 30px;
    height: 24px;
    background: none;
    border: none;
    position: relative;
    cursor: pointer;
    z-index: 1000;
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 3px;
    background: var(--primary-blue);
    position: absolute;
    left: 0;
    transition: all 0.3s;
}

.menu-toggle span:nth-child(1) { top: 0; }
.menu-toggle span:nth-child(2) { top: 50%; transform: translateY(-50%); }
.menu-toggle span:nth-child(3) { bottom: 0; }

.menu-toggle.active span:nth-child(1) {
    transform: translateY(10px) rotate(45deg);
}
.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}
.menu-toggle.active span:nth-child(3) {
    transform: translateY(-10px) rotate(-45deg);
}

/* Menu Overlay */
.menu-overlay {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 300px;
    height: 100%;
    background: var(--white);
    transition: right 0.3s;
    z-index: 900;
    padding: 80px 20px 20px;
    box-shadow: -2px 0 10px rgba(0,0,0,0.1);
}

.menu-overlay.active {
    right: 0;
}

.menu-nav ul {
    list-style: none;
}

.menu-nav a {
    color: var(--primary-blue);
    text-decoration: none;
    display: block;
    padding: 12px 0;
    font-size: 1.1rem;
    font-weight: 500;
}

.submenu {
    padding-left: 20px;
    display: none;
}

.has-submenu.active .submenu {
    display: block;
}

.has-submenu > a::after {
 /*   content: "▼";  */
    margin-left: 5px;
 /*   font-size: 0.8rem;  */
}

/* Content Styles */
.text-content {
    background-color: var(--light-gray);
    padding: 15px;
    border-radius: 8px;
    margin-top: 15px;
}

.section {
    margin-bottom: 25px;
}

.section-title {
    color: var(--primary-red);
    font-size: 1.2rem;
    margin-bottom: 10px;
    font-weight: 500;
}

/* Buttons */
.button-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 15px;
    margin-top: 20px;
}

.btn {
    background-color: var(--primary-blue);
    color: white;
    border: none;
    padding: 12px 15px;
    border-radius: 8px;
    text-align: center;
    font-weight: 500;
    cursor: pointer;
}

.btn:hover {
    background-color: #0000b4;
}

/* for image */
.content-image {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 15px 0;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

/* For side-by-side images */
.image-row {
    display: flex;
    gap: 15px;
    margin: 15px 0;
}

.image-row img {
    flex: 1;
}

/* Calendar */
.calendar-container {
    width: 100%;
    height: 600px;
    margin-top: 20px;
}

.calendar-container iframe {
    width: 100%;
    height: 100%;
    border: none;
    border-radius: 8px;
}

@media (min-width: 768px) {
    .button-container {
        grid-template-columns: repeat(2, 1fr);
    }
}