:root {
    --bg-color: #6fd4e6;
    --card-bg: #b6f3fd;
    --text-color: #1e293b;
    --text-muted: #475569;
    --primary-color: #4f46e5;
    --gradient-start: #4f46e5;
    --gradient-end: #06b6d4;
    --nav-bg: #b6f3fd;
    --shadow: 0 10px 30px rgba(0,0,0,0.05);
}

.dark-mode {
    --bg-color: #061436;
    --card-bg: #062658;
    --text-color: #f8fafc;
    --text-muted: #94a3b8;
    --primary-color: #38bdf8;
    --gradient-start: #38bdf8;
    --gradient-end: #818cf8;
    --nav-bg:  #062658;
    --shadow: 0 10px 30px rgba(0,0,0,0.3);
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: 'Segoe UI', system-ui, sans-serif;
    margin: 0;
    transition: all 0.5s ease;
    overflow-x: hidden;
}

.gradient-text {
    background: linear-gradient(90deg, var(--gradient-start), var(--gradient-end));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

/* تنسيق حاوية الصورة والصورة الشخصية بدقة */
.profile-img-container {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 25px;
}

.profile-img {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--primary-color);
    box-shadow: 0 8px 25px rgba(56, 189, 248, 0.3);
    transition: transform 0.3s ease;
}

.profile-img:hover {
    transform: scale(1.05);
}

.availability-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(56, 189, 248, 0.1);
    color: var(--primary-color);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 20px;
    border: 1px solid rgba(56, 189, 248, 0.2);
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background-color: #10b981;
    border-radius: 50%;
    animation: pulse-green 2s infinite;
}

@keyframes pulse-green {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.navbar {
    display: flex; justify-content: space-between; align-items: center;
    padding: 15px 50px; background-color: var(--nav-bg);
    position: fixed; width: 100%; top: 0; z-index: 1000;
    backdrop-filter: blur(12px); box-sizing: border-box;
    border-bottom: 1px solid rgba(128, 128, 128, 0.15);
    box-shadow: 0 4px 20px rgba(27, 7, 138, 0.05);
}
.navbar a { text-decoration: none; color: var(--text-color); font-weight: 600; transition: 0.3s; }
.navbar a:hover { color: var(--primary-color); }
.logo { margin: 0; font-size: 26px; }
.logo span { color: var(--primary-color); }
.nav-links { list-style: none; display: flex; gap: 25px; margin: 0; padding: 0; }

.theme-switch-wrapper { display: flex; align-items: center; }
.theme-switch { display: inline-block; height: 30px; position: relative; width: 56px; }
.theme-switch input { display: none; }
.slider { background-color: var(--card-bg); bottom: 0; cursor: pointer; left: 0; position: absolute; right: 0; top: 0; transition: 0.4s; border-radius: 34px; display: flex; justify-content: space-between; align-items: center; padding: 0 6px; box-shadow: inset 0 2px 4px rgba(0,0,0,0.1); }
.slider .fa-sun { color: #f39c12; font-size: 13px; z-index: 1; }
.slider .fa-moon { color: #f1c40f; font-size: 13px; z-index: 1; }
.slider:before { background-color: var(--text-color); bottom: 3px; content: ""; height: 24px; left: 4px; position: absolute; transition: 0.4s; width: 24px; border-radius: 50%; z-index: 2; }
input:checked + .slider { background-color: var(--card-bg); }
input:checked + .slider:before { transform: translateX(24px); }

section { padding: 130px 50px 80px; text-align: center; }
p { color: var(--text-muted); font-size: 1.1rem; line-height: 1.6; }

.hidden { opacity: 0; transform: translateY(40px) scale(0.95); transition: all 0.8s cubic-bezier(0.5, 0, 0, 1); }
.show { opacity: 1; transform: translateY(0) scale(1); }

/* أزرار الهيرو */
.hero-buttons { margin-top: 30px; display: flex; justify-content: center; gap: 20px; flex-wrap: wrap; }

.btn-neon {
    background: linear-gradient(135deg, #38bdf8, #4f46e5);
    color: #fff;
    padding: 14px 32px;
    border-radius: 50px;
    font-weight: bold;
    text-decoration: none;
    box-shadow: 0 4px 20px rgba(56, 189, 248, 0.3);
    transition: 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}
.btn-neon:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(56, 189, 248, 0.5);
}

.btn-glass {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-color);
    padding: 14px 32px;
    border-radius: 50px;
    font-weight: bold;
    text-decoration: none;
    border: 2px solid rgba(56, 189, 248, 0.4);
    backdrop-filter: blur(10px);
    transition: 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}
.btn-glass:hover {
    background: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
    transform: translateY(-3px);
}

/* زر الرسائل الثابت */
.floating-chat-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: linear-gradient(135deg, #38bdf8, #4f46e5);
    color: #fff;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 26px;
    box-shadow: 0 5px 25px rgba(0,0,0,0.3);
    z-index: 1500;
    transition: 0.3s;
    text-decoration: none;
}
.floating-chat-btn:hover {
    transform: scale(1.1) rotate(10deg);
    box-shadow: 0 8px 30px rgba(56, 189, 248, 0.5);
}

/* ستايل المهارات */
.skills-container { max-width: 900px; margin: 0 auto; }
.skills-category h3 { margin-bottom: 20px; font-size: 1.3rem; }
.skills-grid { display: flex; justify-content: center; gap: 20px; flex-wrap: wrap; margin-top: 20px; }
.skill-card { background-color: var(--card-bg); padding: 25px 20px; border-radius: 15px; box-shadow: var(--shadow); transition: transform 0.3s; width: 130px; text-align: center; border: 1px solid rgba(128,128,128,0.1); position: relative; }
.skill-card:hover { transform: translateY(-10px); }
.skill-card i { font-size: 3rem; color: var(--primary-color); margin-bottom: 12px; display: block; }
.skill-card span { font-weight: 600; font-size: 1rem; display: block; }

.skill-card.upcoming { opacity: 0.7; border: 1px dashed var(--primary-color); }
.badge-soon {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(243, 156, 18, 0.2);
    color: #f39c12;
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: 6px;
    font-weight: bold;
}

.project-grid {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
    margin-top: 50px;
}

.project-card {
    background-color: var(--card-bg);
    padding: 35px 25px;
    border-radius: 20px;
    box-shadow: var(--shadow);
    transition: transform 0.4s, box-shadow 0.4s;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(128,128,128,0.1);
    width: 340px;
    text-align: left;
    box-sizing: border-box;
}

.project-card:hover { transform: translateY(-15px); box-shadow: 0 20px 40px rgba(0,0,0,0.2); }

@keyframes float { 0% { transform: translateY(0px); } 50% { transform: translateY(-10px); } 100% { transform: translateY(0px); } }
.floating { animation: float 3s ease-in-out infinite; }
.project-icon { font-size: 3.5rem; color: var(--primary-color); margin-bottom: 20px; display: inline-block; }
.project-link { color: var(--primary-color); text-decoration: none; font-weight: bold; display: flex; align-items: center; gap: 8px; margin-top: 20px; transition: 0.3s; }
.project-link:hover { gap: 15px; }

.social-links { margin: 25px 0; }
.social-links a { color: var(--text-color); font-size: 1.8rem; margin: 0 15px; transition: 0.3s; display: inline-block; }
.social-links a:hover { color: var(--primary-key, #38bdf8); transform: translateY(-5px) scale(1.1); }

.modal { display: none; position: fixed; z-index: 2000; padding-top: 60px; left: 0; top: 0; width: 100%; height: 100%; background-color: rgba(0,0,0,0.85); backdrop-filter: blur(5px); text-align: center; }
.modal-content { margin: auto; display: block; width: 80%; max-width: 700px; border-radius: 10px; box-shadow: 0 5px 25px rgba(0,0,0,0.5); }
.close-btn { position: absolute; top: 20px; right: 40px; color: #fff; font-size: 40px; font-weight: bold; cursor: pointer; transition: 0.3s; }
.close-btn:hover { color: var(--primary-color); }

@media (max-width: 768px) {
    .nav-links { display: none; }
    section { padding: 100px 20px 50px; }
}