/* ============================================
   MD THING - الملف الرئيسي للأنماط
   ============================================ */

/* === المتغيرات العامة === */
:root {
    /* ألوان الوضع النهاري */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-card: #ffffff;
    --text-primary: #1a1a2e;
    --text-secondary: #555770;
    --text-muted: #8e8ea0;
    --border-color: #e8e8ee;
    --border-light: #f0f0f5;
    --primary: #0d6efd;
    --primary-light: #e7f1ff;
    --primary-hover: #0b5ed7;
    --primary-dark: #0a58ca;
    --gradient-primary: linear-gradient(135deg, #0d6efd, #6610f2);
    --gradient-hero: linear-gradient(135deg, #f0f4ff 0%, #ffffff 50%, #f8f0ff 100%);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.15);
    --nav-bg: rgba(255, 255, 255, 0.95);
    --nav-blur: blur(20px);
    --tag-bg: #e7f1ff;
    --tag-text: #0d6efd;
    --input-bg: #ffffff;
    --input-border: #d1d5db;
    --input-focus: #0d6efd;
    --danger: #dc3545;
    --danger-light: #fde8ea;
    --success: #198754;
    --success-light: #d1fae5;
    --warning: #ffc107;
    --modal-overlay: rgba(0, 0, 0, 0.5);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --font-ar: 'Cairo', sans-serif;
    --font-en: 'Poppins', sans-serif;
}

/* === الوضع الليلي === */
[data-theme="dark"] {
    --bg-primary: #0a0a1a;
    --bg-secondary: #111128;
    --bg-card: #151530;
    --text-primary: #e8e8f0;
    --text-secondary: #b0b0c8;
    --text-muted: #6e6e8a;
    --border-color: #2a2a48;
    --border-light: #1e1e3a;
    --primary: #6ea8fe;
    --primary-light: #1a2a4a;
    --primary-hover: #8bb9fe;
    --primary-dark: #5a9af5;
    --gradient-primary: linear-gradient(135deg, #6ea8fe, #a370f0);
    --gradient-hero: linear-gradient(135deg, #0a0a1a 0%, #111128 50%, #0f0f20 100%);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.6);
    --nav-bg: rgba(10, 10, 26, 0.95);
    --nav-blur: blur(20px);
    --tag-bg: #1e2a4a;
    --tag-text: #6ea8fe;
    --input-bg: #151530;
    --input-border: #3a3a5a;
    --input-focus: #6ea8fe;
    --danger-light: #3a1a20;
    --success-light: #1a3a2a;
    --modal-overlay: rgba(0, 0, 0, 0.7);
}

/* === إعادة الضبط العامة === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-ar);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    transition: var(--transition);
    overflow-x: hidden;
}

/* عند تغيير اللغة للإنجليزية */
body.lang-en {
    font-family: var(--font-en);
    direction: ltr;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

/* === شريط التنقل === */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--nav-bg);
    backdrop-filter: var(--nav-blur);
    -webkit-backdrop-filter: var(--nav-blur);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
    padding: 0;
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 1px;
    font-family: var(--font-en);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-weight: 500;
    transition: var(--transition);
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
    background: var(--primary-light);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.icon-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    font-size: 1rem;
}

.icon-btn:hover {
    background: var(--primary-light);
    color: var(--primary);
    border-color: var(--primary);
}

.lang-toggle {
    position: relative;
}

.lang-text {
    font-size: 0.75rem;
    font-weight: 700;
    font-family: var(--font-en);
}

.menu-toggle {
    display: none;
}

/* === الأزرار === */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-family: inherit;
    text-align: center;
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient-primary);
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(13, 110, 253, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(13, 110, 253, 0.4);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: #ffffff;
    transform: translateY(-2px);
}

.btn-lg {
    padding: 14px 28px;
    font-size: 1rem;
    border-radius: var(--radius-lg);
}

.btn-sm {
    padding: 6px 16px;
    font-size: 0.85rem;
    border-radius: var(--radius-sm);
}

.btn-block {
    width: 100%;
    justify-content: center;
    padding: 14px;
    font-size: 1rem;
}

.login-btn-nav {
    padding: 8px 18px;
    font-size: 0.85rem;
}

.logout-btn-nav {
    padding: 8px 18px;
    font-size: 0.85rem;
}

/* === قسم الهيرو === */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 100px 40px 60px;
    background: var(--gradient-hero);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -200px;
    right: -200px;
    width: 500px;
    height: 500px;
    background: var(--primary-light);
    border-radius: 50%;
    opacity: 0.5;
    z-index: 0;
}

.hero-content {
    flex: 1;
    max-width: 600px;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    padding: 6px 16px;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 16px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
    font-weight: 500;
}

.hero-description {
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: 30px;
    max-width: 500px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.hero-stats {
    display: flex;
    gap: 30px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--primary);
    font-family: var(--font-en);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-avatar {
    width: 280px;
    height: 280px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    position: relative;
}

.hero-avatar::after {
    content: '';
    position: absolute;
    inset: -10px;
    border-radius: 50%;
    border: 3px dashed var(--primary);
    opacity: 0.3;
    animation: spin 20s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.avatar-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.avatar-fallback {
    font-size: 6rem;
    color: #ffffff;
}

/* === الأقسام العامة === */
section {
    padding: 80px 0;
}

.section-title {
    font-size: 2.2rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.section-title span {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-description {
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 50px;
    font-size: 1.05rem;
}

/* === قسم عن الأونر === */
.about {
    background: var(--bg-secondary);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    background: var(--bg-card);
    padding: 40px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.about-info h3 {
    font-size: 1.5rem;
    margin-bottom: 16px;
    color: var(--primary);
}

.about-info p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.9;
}

.skills {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 24px;
}

.skill-tag {
    padding: 6px 16px;
    background: var(--tag-bg);
    color: var(--tag-text);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    transition: var(--transition);
}

.skill-tag:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

/* === قسم المشاريع === */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 30px;
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.project-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 1.8rem;
    color: var(--primary);
}

.project-title {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.project-description {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 16px;
    line-height: 1.6;
}

.project-tags {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.project-tags span {
    padding: 4px 12px;
    background: var(--tag-bg);
    color: var(--tag-text);
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
}

/* === قسم التواصل === */
.contact {
    background: var(--bg-secondary);
}

.contact-content {
    max-width: 600px;
    margin: 0 auto;
    background: var(--bg-card);
    padding: 40px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.contact-item:hover {
    background: var(--primary-light);
}

.contact-item i {
    font-size: 1.3rem;
    color: var(--primary);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-light);
    border-radius: 50%;
}

.contact-item span {
    font-weight: 500;
    color: var(--text-primary);
}

/* === الفوتر === */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 24px 0;
    text-align: center;
}

.footer p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer strong {
    color: var(--primary);
}

/* === النوافذ المنبثقة (Modal) === */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--modal-overlay);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    backdrop-filter: blur(4px);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    width: 90%;
    max-width: 440px;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border-color);
    transform: translateY(20px);
    transition: var(--transition);
    overflow: hidden;
}

.modal-overlay.active .modal {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 1.3rem;
    font-weight: 700;
}

.modal-close {
    border: none;
    background: transparent;
    cursor: pointer;
    font-size: 1.2rem;
    color: var(--text-muted);
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--danger);
}

.modal-body {
    padding: 24px;
}

/* === الفورم === */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-primary);
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--input-border);
    border-radius: var(--radius-md);
    background: var(--input-bg);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus {
    outline: none;
    border-color: var(--input-focus);
    box-shadow: 0 0 0 4px rgba(13, 110, 253, 0.1);
}

.form-error {
    color: var(--danger);
    font-size: 0.85rem;
    margin-bottom: 12px;
    min-height: 20px;
    font-weight: 500;
}

.login-hint {
    margin-top: 20px;
    text-align: center;
    padding: 12px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    color: var(--text-muted);
}

.login-hint strong {
    color: var(--primary);
}

/* === نافذة الترحيب === */
.modal-welcome {
    text-align: center;
}

.welcome-icon {
    font-size: 4rem;
    color: var(--success);
    margin-bottom: 16px;
}

.welcome-icon i {
    animation: popIn 0.5s ease;
}

@keyframes popIn {
    0% { transform: scale(0); opacity: 0; }
    70% { transform: scale(1.2); }
    100% { transform: scale(1); opacity: 1; }
}

.modal-welcome h3 {
    font-size: 1.4rem;
    margin-bottom: 8px;
}

.modal-welcome p {
    color: var(--text-muted);
    margin-bottom: 24px;
}

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

/* === حالة تسجيل الدخول === */
body.logged-in .login-btn-nav {
    display: none !important;
}

body.logged-in .logout-btn-nav {
    display: flex !important;
}

/* === التجاوب === */
@media (max-width: 992px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding: 100px 20px 60px;
    }

    .hero-content {
        max-width: 100%;
    }

    .hero-description {
        max-width: 100%;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-title {
        font-size: 2.8rem;
    }

    .hero-avatar {
        width: 200px;
        height: 200px;
        margin-top: 30px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 70px;
        right: -100%;
        width: 280px;
        height: calc(100vh - 70px);
        background: var(--nav-bg);
        backdrop-filter: var(--nav-blur);
        flex-direction: column;
        padding: 20px;
        gap: 4px;
        border-left: 1px solid var(--border-color);
        transition: var(--transition);
        box-shadow: var(--shadow-xl);
    }

    .nav-links.active {
        right: 0;
    }

    .nav-link {
        width: 100%;
        padding: 12px 16px;
        border-radius: var(--radius-md);
    }

    .menu-toggle {
        display: flex;
    }

    .hero-title {
        font-size: 2.2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .about-content {
        padding: 24px;
    }

    .contact-content {
        padding: 24px;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 90px 16px 40px;
    }

    .hero-title {
        font-size: 1.8rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn-lg {
        width: 100%;
        justify-content: center;
    }

    .hero-stats {
        gap: 16px;
    }

    .stat-number {
        font-size: 1.4rem;
    }

    .projects-grid {
        grid-template-columns: 1fr;
    }
}

/* === تأثيرات إضافية === */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-content > * {
    animation: fadeInUp 0.6s ease forwards;
}

.hero-content > *:nth-child(1) { animation-delay: 0.1s; }
.hero-content > *:nth-child(2) { animation-delay: 0.2s; }
.hero-content > *:nth-child(3) { animation-delay: 0.3s; }
.hero-content > *:nth-child(4) { animation-delay: 0.4s; }
.hero-content > *:nth-child(5) { animation-delay: 0.5s; }
.hero-content > *:nth-child(6) { animation-delay: 0.6s; }