/*
====================================================================
  CLEANED & REFACTORED CSS
  - Preserves visual design and values
  - Fixes broken braces, removes nested/invalid rules
  - Removes duplicated keyframes
  - Organized into sections requested by user
====================================================================
*/

/* -------------------------
   Reset
   ------------------------- */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
img { max-width: 100%; display: block; }
ul { list-style: none; }


/* -------------------------
   Variables
   ------------------------- */
:root {
    /* Light professional orange-based theme (default) */
    --bg-primary: #ffffff;
    --bg-secondary: #ffffff;
    --card-bg: #f8fafc;
    --text-primary: #1f2937;
    --text-secondary: #374151;
    --accent: #f97316;
    --accent-hover: #ea580c;
    --accent-glow: rgba(249,115,22,0.12);
    --border-color: #e6eef6;

    /* Spacing & Layout */
    --section-padding: 5rem 1.5rem;
    --max-width: 1200px;
    --radius: 12px;
    --transition: all 0.28s cubic-bezier(.2,.9,.2,1);

    /* Fonts */
    --font-main: 'Inter', sans-serif;
}

html[lang="ar"] { font-family: 'Cairo', sans-serif; }

[data-theme="dark"] {
    --bg-primary: #0b1220;
    --bg-secondary: #0f1724;
    --card-bg: #0f1724;
    --text-primary: #e6eef6;
    --text-secondary: #94a3b8;
    --accent: #f97316;
    --accent-glow: rgba(249,115,22,0.06);
    --border-color: #243242;
}


/* -------------------------
   Global styles
   ------------------------- */
body {
    font-family: var(--font-main);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color 0.3s, color 0.3s;
}

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 1.5rem; }
.section-title {
    font-size: 2.5rem; margin-bottom: 3rem; text-align: center; font-weight: 700;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; display: block; margin-left: auto; margin-right: auto;
}
.section-title::after { content: ''; display: block; width: 60px; height: 4px; background: var(--accent); margin: 0.5rem auto 0; border-radius: 2px; }

.btn { display: inline-block; padding: 0.8rem 2rem; border-radius: 50px; font-weight: 600; cursor: pointer; border: 2px solid transparent; transition: var(--transition); }
.btn-primary { background-color: var(--accent); color: #fff; box-shadow: 0 10px 30px var(--accent-glow); }
.btn-primary:hover { transform: translateY(-4px) scale(1.01); box-shadow: 0 20px 50px var(--accent-glow); }
.btn-secondary { background-color: transparent; border-color: var(--text-secondary); color: var(--text-primary); }
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }

.fade-in { opacity: 0; transform: translateY(30px); transition: opacity 0.8s ease-out, transform 0.8s ease-out; }
.fade-in.visible { opacity: 1; transform: translateY(0); }


/* -------------------------
   Header & Navigation
   ------------------------- */
header {
    position: fixed; top: 0; left: 0; width: 100%; padding: 1rem 0; z-index: 10001; transition: padding 0.3s; isolation: isolate;
}

/* Header backdrop overlay to mask animated background */
header::before {
    content: ''; position: absolute; inset: 0; z-index: -1; pointer-events: none; background: var(--bg-secondary); opacity: 0.98;
}

[data-theme="dark"] header::before { opacity: 0.95; }

[data-theme="light"] header { background: rgba(255,255,255,0.8); }

header.scrolled { padding: 0.8rem 0; border-bottom: 1px solid var(--border-color); }
.nav-container { display: flex; justify-content: space-between; align-items: center; }
.logo { font-size: 1.5rem; font-weight: 800; color: transparent; background: linear-gradient(90deg, var(--accent) 0%, #ffb37d 60%); -webkit-background-clip: text; background-clip: text; position: relative; transition: transform 0.35s ease, text-shadow 0.35s ease; }
.logo:hover { transform: translateY(-3px) scale(1.02); text-shadow: 0 8px 30px rgba(249,115,22,0.09); }
.logo::after { content: ''; position: absolute; left: 0; right: 0; bottom: -6px; height: 3px; background: linear-gradient(90deg, rgba(249,115,22,0.9), rgba(234,88,12,0.6)); border-radius: 2px; transform: scaleX(0); transform-origin: left center; transition: transform 0.35s ease; }
.logo:hover::after { transform: scaleX(1); }

nav ul { display: flex; gap: 2rem; }
.nav-link { font-size: 0.95rem; font-weight: 500; color: var(--text-secondary); position: relative; }
.nav-link:hover { color: var(--accent); }

.theme-toggle { background: transparent; border: none; color: var(--text-primary); font-size: 1.2rem; cursor: pointer; margin-left: 2rem; transition: var(--transition); }
.theme-toggle:hover { color: var(--accent); transform: rotate(15deg) scale(1.02); }
.hamburger { display: none; cursor: pointer; }


/* -------------------------
   Hero section
   ------------------------- */
.hero { min-height: 100vh; display: flex; align-items: center; padding-top: 80px; position: relative; background-image: radial-gradient(circle at 15% 50%, rgba(249,115,22,0.04) 0%, transparent 35%); overflow: hidden; }
.hero-content { max-width: 800px; margin: 0 auto; text-align: center; position: relative; z-index: 2; transition: transform 0.45s cubic-bezier(.2,.9,.2,1); }
.hero-subtitle { color: var(--accent); font-weight: 600; margin-bottom: 1rem; letter-spacing: 2px; text-transform: uppercase; font-size: 0.9rem; }
.hero-title { font-size: 4rem; line-height: 1.1; margin-bottom: 1.5rem; font-weight: 800; -webkit-text-fill-color: var(--text-primary); position: relative; overflow: visible; }
.reveal-up { opacity: 0; transform: translateY(18px); animation: revealUp 0.72s cubic-bezier(.2,.9,.2,1) forwards; }
.reveal-delay-1 { animation-delay: 0.08s; }
.reveal-delay-2 { animation-delay: 0.18s; }
.reveal-delay-3 { animation-delay: 0.28s; }
.reveal-delay-4 { animation-delay: 0.38s; }
@keyframes revealUp { to { opacity: 1; transform: translateY(0); } }

/* Hero canvas - kept for backward compatibility (hero-local) */
.hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 2; pointer-events: none; mix-blend-mode: multiply; opacity: 0.95; }

/* Full-page particle background canvas */
.page-canvas { position: fixed; inset: 0; width: 100%; height: 100%; z-index: -9999; pointer-events: none; will-change: transform; opacity: 1; mix-blend-mode: normal; }

.hero-description { font-size: 1.2rem; color: var(--text-secondary); margin-bottom: 2.5rem; max-width: 600px; margin-left: auto; margin-right: auto; }
.hero-buttons { display: flex; gap: 1rem; justify-content: center; }


/* -------------------------
   About section
   ------------------------- */
.about { padding: var(--section-padding); background: var(--bg-secondary); }
.about-grid { display: grid; grid-template-columns: 0.9fr 1.6fr; gap: 4rem; }
.about-image { position: relative; display: flex; justify-content: center; }
.about-image::before { content: ""; position: absolute; width: 320px; height: 320px; background: radial-gradient(circle, var(--accent-glow), transparent 70%); filter: blur(40px); z-index: -1; }
.photo-placeholder { width: 100%; aspect-ratio: 1/1; background: linear-gradient(135deg, var(--bg-primary), var(--border-color)); border-radius: var(--radius); display: flex; align-items: center; justify-content: center; font-size: 3rem; color: var(--text-secondary); border: 2px solid var(--border-color); }
.about-text h3 { font-size: 1.8rem; margin-bottom: 1rem; }
.about-text p { color: var(--text-secondary); margin-bottom: 1.5rem; font-size: 1.05rem; }

.stats { display: flex; gap: 2rem; margin-top: 2rem; padding-top: 2rem; border-top: 1px solid var(--border-color); }
.stat-item h4 { font-size: 2.5rem; color: var(--accent); font-weight: 800; line-height: 1; }
.stat-item p { font-size: 0.9rem; margin-bottom: 0; }


/* -------------------------
   Skills
   ------------------------- */
.skills { padding: var(--section-padding); }
.skills-container { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2rem; }
.skill-category { background: var(--card-bg); padding: 2rem; border-radius: var(--radius); border: 1px solid var(--border-color); transition: var(--transition); }
.skill-category:hover { border-color: var(--accent); box-shadow: 0 10px 30px -10px rgba(0,0,0,0.1); transform: translateY(-5px); }
.skill-category h3 { font-size: 1.25rem; margin-bottom: 1.5rem; display: flex; align-items: center; gap: 0.75rem; }
.skill-list { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.skill-tag { background: var(--bg-primary); padding: 0.5rem 1rem; border-radius: 6px; font-size: 0.9rem; color: var(--text-secondary); border: 1px solid var(--border-color); }


/* -------------------------
   Projects
   ------------------------- */
.projects { padding: var(--section-padding); background: var(--bg-secondary); }
.projects-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 2rem; }
.project-card { background: var(--card-bg); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border-color); transition: var(--transition); display: flex; flex-direction: column; }
.project-card:hover { transform: translateY(-8px); border-color: var(--accent); box-shadow: 0 15px 30px -10px rgba(0,0,0,0.2); }
.project-content { padding: 2rem; flex-grow: 1; display: flex; flex-direction: column; }
.project-icon { width: 50px; height: 50px; background: rgba(56,189,248,0.1); border-radius: 12px; display: flex; align-items: center; justify-content: center; margin-bottom: 1.5rem; color: var(--accent); font-size: 1.5rem; }
[data-theme="light"] .project-icon { background: rgba(2,132,199,0.1); }
.project-title { font-size: 1.5rem; margin-bottom: 1rem; }
.project-desc { color: var(--text-secondary); margin-bottom: 1.5rem; flex-grow: 1; }
.project-link { color: var(--accent); font-weight: 600; display: inline-flex; align-items: center; gap: 0.5rem; }
.project-link:hover { text-decoration: underline; }


/* -------------------------
   Experience
   ------------------------- */
.experience { padding: var(--section-padding); }
.timeline { max-width: 800px; margin: 0 auto; position: relative; }
.timeline::before { content: ''; position: absolute; left: 0; top: 0; height: 100%; width: 2px; background: var(--border-color); }
.timeline-item { margin-left: 2rem; padding-bottom: 3rem; position: relative; }
.timeline-item::after { content: ''; position: absolute; left: -2.4rem; top: 0.2rem; width: 14px; height: 14px; background: var(--accent); border-radius: 50%; box-shadow: 0 0 0 4px var(--bg-primary); }
.timeline-date { font-size: 0.85rem; color: var(--accent); font-weight: 600; margin-bottom: 0.5rem; display: block; }
.timeline-role { font-size: 1.25rem; margin-bottom: 0.5rem; font-weight: 700; }
.timeline-company { font-size: 1rem; color: var(--text-primary); opacity: 0.8; margin-bottom: 1rem; }
.timeline-desc { color: var(--text-secondary); }


/* -------------------------
   Services
   ------------------------- */
.services { padding: var(--section-padding); background: var(--bg-secondary); }
.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 2rem; }
.service-card { background: var(--card-bg); padding: 2.5rem 2rem; border-radius: var(--radius); text-align: center; border: 1px solid var(--border-color); transition: var(--transition); }
.service-card:hover { border-color: var(--accent); transform: translateY(-5px); }
.service-icon { font-size: 2.5rem; color: var(--accent); margin-bottom: 1.5rem; }
.service-title { margin-bottom: 1rem; font-size: 1.25rem; }


/* -------------------------
   Contact section
   ------------------------- */
.contact { padding: var(--section-padding); background: var(--bg-secondary); }
.contact-container { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; max-width: 1100px; margin: 0 auto; align-items: start; }
.contact-info h3 { font-size: 2rem; margin-bottom: 1.5rem; }
.contact-links { margin-top: 2rem; display: flex; flex-direction: column; gap: 1rem; }
.contact-item { display: flex; align-items: center; gap: 1rem; font-size: 1.05rem; color: var(--text-secondary); transition: var(--transition); margin-bottom: 0.85rem; }
.contact-item:hover { color: var(--text-primary); }

.ci-icon { width: 56px; height: 56px; min-width: 56px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; color: #fff; font-size: 1.1rem; box-shadow: 0 8px 20px rgba(15,23,42,0.06); background: linear-gradient(135deg, var(--accent), #ffb37d); }
.ci-icon i { font-size: 1.1rem; }
.ci-text { display: flex; flex-direction: column; }
.ci-title { font-weight: 700; color: var(--text-primary); }
.ci-sub { font-size: 0.95rem; color: var(--text-secondary); }

.contact-form { display: block; }
.contact-form .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-group { position: relative; }
.form-group input, .form-group textarea { width: 100%; padding: 0.75rem 0.5rem 0.5rem 0.5rem; background: transparent; border: none; border-bottom: 2px solid var(--border-color); color: var(--text-primary); font-family: var(--font-main); transition: border-color 220ms cubic-bezier(.2,.9,.2,1), box-shadow 220ms; }
.form-group textarea { min-height: 140px; resize: vertical; padding-top: 0.75rem; }
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--text-secondary); }
.form-group input:focus, .form-group textarea:focus { outline: none; border-bottom-color: var(--accent); box-shadow: 0 8px 30px var(--accent-glow); }
.form-label { display: block; font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 0.4rem; }
.contact-form .btn-row { margin-top: 1rem; }
.contact-form .btn-primary { background: linear-gradient(90deg, var(--accent) 0%, var(--accent-hover) 100%); color: #fff; padding: 0.85rem 1.6rem; border-radius: 999px; border: none; font-weight: 700; box-shadow: 0 10px 30px rgba(249,115,22,0.09); transition: transform 220ms cubic-bezier(.2,.9,.2,1), box-shadow 220ms; }
.contact-form .btn-primary:hover { transform: translateY(-3px); box-shadow: 0 18px 45px rgba(249,115,22,0.14), 0 6px 20px rgba(234,88,12,0.06); }

.contact-form button{
    background:linear-gradient(135deg,var(--accent),#ffb37d);
    border:none;
    padding:12px 22px;
    border-radius:50px;
    color:#fff;
    font-weight:600;
    cursor:pointer;
    transition:all .25s ease;
}

.contact-form button:hover{
    transform:translateY(-3px);
    box-shadow:0 12px 25px var(--accent-glow);
}
/* -------------------------
   Footer
   ------------------------- */
footer {
    padding: 2rem 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.9rem;
}
.back-to-top { display: inline-flex; margin-top: 1rem; color: var(--accent); font-weight: 600; align-items: center; gap: 0.5rem; }


/* -------------------------
   Animations
   ------------------------- */
@keyframes floatImage {
    0% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-18px) rotate(0.5deg); }
    100% { transform: translateY(0px) rotate(0deg); }
}

@keyframes revealUp { to { opacity: 1; transform: translateY(0); } }

.profile-img { width: 280px; height: 280px; object-fit: cover; border-radius: 50%; border: 6px solid rgba(255,255,255,0.9); box-shadow: 0 20px 50px rgba(31,41,55,0.06), 0 0 40px var(--accent-glow); animation: floatImage 5s ease-in-out infinite; transition: transform 0.36s ease, box-shadow 0.36s ease; display: block; }
.profile-img:hover { transform: translateY(-6px) scale(1.04) rotate(-1deg); box-shadow: 0 30px 70px rgba(31,41,55,0.08), 0 0 50px rgba(249,115,22,0.12); }


/* -------------------------
   Responsive
   ------------------------- */
@media (max-width: 992px) {
    .hero-title { font-size: 3rem; }
    .about-grid { grid-template-columns: 1fr; gap: 2rem; }
    .contact-container { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .hamburger { display: block; color: var(--text-primary); font-size: 1.5rem; }
    .nav-links { position: fixed; top: 70px; left: 0; width: 100%; background: var(--bg-secondary); flex-direction: column; padding: 2rem; gap: 1.5rem; border-bottom: 1px solid var(--border-color); transform: translateY(-150%); transition: transform 0.3s ease; }
    .nav-links.active { transform: translateY(0); }
    .hero-title { font-size: 2.5rem; }
    .section-title { font-size: 2rem; }
    .timeline::before { left: 1rem; }
    .timeline-item { margin-left: 2.5rem; }
    .timeline-item::after { left: -1.9rem; }
    .objective-text { font-size: 1.2rem; }
    .objective-box { padding: 2rem 1.5rem; }

    .hero-buttons { flex-direction: column; align-items: center; gap: 12px; }
    .skills-grid, .projects-grid, .services-grid { grid-template-columns: 1fr; }
    .container { width: 100%; }
    section { padding: 3rem 1rem; }
    header { padding: 14px 18px; }
}

@media (max-width: 480px) {
    .hero-title { font-size: 2rem; }
    .section-title { font-size: 1.6rem; }
    .objective-text { font-size: 1rem; }
}

@media (max-width: 768px) {
    .contact .section-title, .contact h2, .contact h3 { text-align: center; margin-left: auto; margin-right: auto; }
    .contact-container { text-align: center; }
}

@media (max-width: 768px) {
    .contact-container { grid-template-columns: 1fr; justify-items: center; text-align: center; }
    .contact-info { width: 100%; max-width: 420px; }
    .contact-links { align-items: center; }
}

@media (max-width: 768px) {
    .objective-box::before { font-size: 4rem; left: 10px; top: 5px; opacity: 0.05; }
    .objective-text { padding-left: 10px; }
}

@media (max-width: 768px) {
    .contact-container { grid-template-columns: 1fr; width: 100%; padding: 0; margin: auto; }
    .contact-info { width: 100%; max-width: 100%; margin: auto; text-align: center; }
    .contact-links { align-items: center; width: 100%; }
    .contact-item { justify-content: center; width: 100%; }
}

/* Hero button subtle shine */
:root { --btn-shine: rgba(255,255,255,0.35); }
body[data-theme="dark"], [data-theme="dark"] { --btn-shine: rgba(255,255,255,0.22); }
.hero .btn { position: relative; overflow: hidden; z-index: 1; }
.hero .btn::after { content: ''; position: absolute; top: -60%; left: -40%; width: 40%; height: 220%; background: linear-gradient(90deg, rgba(255,255,255,0) 0%, var(--btn-shine) 50%, rgba(255,255,255,0) 100%); transform: translateX(-120%) rotate(18deg); transition: transform 850ms cubic-bezier(.2,.9,.2,1); pointer-events: none; mix-blend-mode: overlay; }
.hero .btn:hover::after, .hero .btn:focus::after { transform: translateX(240%) rotate(18deg); }
a,
.nav-link,
.logo,
.btn {
    text-decoration: none !important;
}
.objective-box {
    background: linear-gradient(135deg, var(--bg-secondary), var(--card-bg));
    padding: 3rem;
    border-radius: var(--radius);
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.objective-text {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.6;
}
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.testimonial-card{
    background:var(--card-bg);
    padding:25px;
    border-radius:12px;
    border:1px solid var(--border-color);
    box-shadow:0 5px 20px rgba(0,0,0,0.05);
    transition:all .3s ease;
}

.testimonial-card:hover{
    transform:translateY(-6px);
    border-color:var(--accent);
    box-shadow:0 15px 35px rgba(0,0,0,0.08);
}

.testimonial-text {
    font-style: italic;
    margin-bottom: 15px;
    line-height: 1.6;
}

.testimonial-author {
    font-weight: 600;
}

.testimonial-role {
    font-size: 14px;
    opacity: .7;
}
.lang-toggle{
    border:1px solid var(--border-color);
    background:var(--card-bg);
    padding:6px 14px;
    border-radius:8px;
    font-size:14px;
    cursor:pointer;
    color:var(--text-primary);
    font-weight:600;
    transition:all .25s ease;
}

.lang-toggle:hover{
    background:var(--accent);
    color:#fff;
    border-color:var(--accent);
    transform:translateY(-2px);
    box-shadow:0 8px 20px var(--accent-glow);
}
.contact-item{
    display:flex;
    align-items:center;
    gap:14px;
    padding:12px 16px;
    border-radius:12px;
    transition:all .25s ease;
}

.contact-item:hover{
    background:var(--card-bg);
    transform:translateX(4px);
}

.contact-item i{
    width:42px;
    height:42px;
    border-radius:50%;
    display:flex;
    align-items:center;
    justify-content:center;
    background:linear-gradient(135deg,var(--accent),#ffb37d);
    color:#fff;
    font-size:18px;
}
.contact-form-wrapper{
    background:var(--card-bg);
    padding:35px;
    border-radius:16px;
    border:1px solid var(--border-color);
    box-shadow:0 20px 40px rgba(0,0,0,.05);
}
.hero-title span{
    padding-right:6px;
}

.cursor{
    border-right:3px solid var(--accent);
    animation:blinkCursor .8s infinite;
}

@keyframes blinkCursor{
    0%{border-color:transparent;}
    50%{border-color:var(--accent);}
    100%{border-color:transparent;}
}