:root {
    --primary-color: #00ff88;
    --secondary-color: #7000ff;
    --background-dark: #121212;
    --background-light: #ffffff;
    --text-dark: #ffffff;
    --text-light: #121212;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Cairo', sans-serif;
}

body {
    min-height: 100vh;
    transition: background-color 0.3s, color 0.3s;
}

body.dark-mode {
    background-color: var(--background-dark);
    color: var(--text-dark);
}

body.light-mode {
    background-color: var(--background-light);
    color: var(--text-light);
}

/* شاشة تسجيل الدخول */
#login-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--background-dark);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: 0.3s;
}

#login-screen.active {
    opacity: 1;
    visibility: visible;
}

.login-container {
    background: rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 15px;
    backdrop-filter: blur(10px);
    text-align: center;
}

.login-form input {
    padding: 10px;
    margin: 10px 0;
    border: none;
    border-radius: 5px;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    width: 200px;
}

.login-form button {
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    background: var(--primary-color);
    color: black;
    cursor: pointer;
    transition: 0.3s;
}

.login-form button:hover {
    background: var(--secondary-color);
    color: white;
}

/* الشاشة الرئيسية */
header {
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 2.5rem;
    font-weight: bold;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo.animated {
    animation: float 3s ease-in-out infinite;
}

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

.theme-toggle {
    display: flex;
    align-items: center;
    gap: 10px;
}

.switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 34px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--primary-color);
    transition: .4s;
}

.slider:before {
    position: absolute;
    content: "";
    height: 26px;
    width: 26px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
}

.slider.round {
    border-radius: 34px;
}

.slider.round:before {
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--secondary-color);
}

input:checked + .slider:before {
    transform: translateX(26px);
}

/* الشكل السداسي */
.hexagon-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    padding: 2rem;
    max-width: 1000px;
    margin: 0 auto;
    place-items: center;
}

.hexagon-item {
    width: 200px;
    height: 230px;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: 0.3s;
    padding: 20px;
    text-align: center;
}

.hexagon-item:hover {
    transform: scale(1.1);
}

.hexagon-item i {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.hexagon-item h3 {
    font-size: 1.2rem;
    color: white;
}

.hidden {
    display: none;
}