/* =========================================
   1. MODERN TERMINAL VARIABLES (Default)
   ========================================= */
:root {
    --page-bg: #1a1b26;           /* Deep soft slate blue */
    --bg-color: #24283b;          /* Slightly lighter container */
    --text-color: #c0caf5;        /* Soft lavender-white for less eye strain */
    --prompt-color: #7aa2f7;      /* Pastel blue for headers/prompts */
    --accent-color: #9ece6a;      /* Soft pastel green for list accents */
    --border-color: #414868;      /* Muted borders */
    --font-mono: 'Fira Code', 'Courier New', Courier, monospace;
    --counter-bg: #16161e;
    --btn-bg: #3d59a1;
    --btn-text: #c0caf5;
    
    --glass-blur: blur(0px);
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    --float-transform: translateY(0);
}

/* =========================================
   2. FLOATING CLOUD VARIABLES (Toggled)
   ========================================= */
body.cloud-theme {
    background: linear-gradient(-45deg, #ff990033, #6b5b9533, #ffffff, #e6f7ff);
    background-size: 400% 400%;
    animation: gradientBG 15s ease infinite;

    --page-bg: transparent; 
    --bg-color: rgba(255, 255, 255, 0.65); 
    --text-color: #333333;    
    --prompt-color: #ff9900;  
    --accent-color: #6b5b95;  
    --border-color: rgba(255, 255, 255, 0.4);
    --font-mono: 'Inter', 'Segoe UI', Tahoma, sans-serif;
    --counter-bg: rgba(255, 255, 255, 0.6);
    --btn-bg: #ff9900;
    --btn-text: #ffffff;
    
    --glass-blur: blur(12px);
    --shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.15);
    --float-transform: translateY(-5px);
}

@keyframes gradientBG {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* =========================================
   3. GLOBAL RESET & BODY
   ========================================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--page-bg);
    color: var(--text-color);
    font-family: var(--font-mono);
    line-height: 1.6;
    padding: 20px;
    transition: background-color 0.5s ease, color 0.5s ease; 
}

/* Base Print Utility Class (Hidden on screen) */
.print-only {
    display: none;
}

/* =========================================
   4. THEME TOGGLE BUTTON
   ========================================= */
.theme-btn {
    float: right;
    background-color: var(--btn-bg);
    color: var(--btn-text);
    padding: 10px 15px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    cursor: pointer;
    font-family: inherit;
    font-weight: bold;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.theme-btn:hover {
    filter: brightness(1.2);
    transform: translateY(-2px);
}

.theme-btn i {
    margin-right: 6px;
}

/* =========================================
   5. MAIN CONTAINER
   ========================================= */
main, header {
    max-width: 900px;
    margin: 0 auto;
    background-color: var(--bg-color);
    padding: 40px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-radius: 8px;
    position: relative;
    transition: all 0.5s ease;
}

header {
    border-bottom: none;
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
    padding-bottom: 0;
}

main {
    border-top: none;
    border-top-left-radius: 0;
    border-top-right-radius: 0;
    margin-top: 0;
}

/* =========================================
   6. TYPOGRAPHY, HEADERS & ICONS
   ========================================= */
h1 {
    font-size: 2rem;
    margin-bottom: 5px;
    color: var(--text-color);
}

body:not(.cloud-theme) h1::before {
    content: "[zahran@aws ~]$ ";
    color: var(--accent-color);
}

.contact-line {
    font-size: 0.95rem;
    margin-bottom: 10px;
    color: var(--text-color);
    opacity: 0.9;
}

/* Standalone Social Icons Styling */
.social-icons {
    margin-bottom: 25px;
}

.social-icons a {
    color: var(--text-color);
    font-size: 1.6rem;
    margin-right: 15px;
    text-decoration: none;
    display: inline-block;
    transition: color 0.3s ease, transform 0.3s ease;
}

.social-icons a:hover {
    color: var(--prompt-color);
    transform: scale(1.15); 
}

/* Global Icon Styling */
i.fas, i.fab {
    color: var(--prompt-color);
    margin-right: 4px;
}

.social-icons a i {
    color: inherit;
    margin-right: 0;
}

h2 {
    font-size: 1.2rem;
    margin-top: 35px;
    margin-bottom: 15px;
    color: var(--prompt-color);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 5px;
}

body:not(.cloud-theme) h2::before {
    content: "cat ";
    color: var(--text-color);
}

body:not(.cloud-theme) h2::after {
    content: ".txt";
    color: var(--text-color);
}

/* =========================================
   7. EXPERIENCE & SKILLS
   ========================================= */
p, li {
    font-size: 0.95rem;
    margin-bottom: 10px;
}

ul {
    list-style-type: none; 
    padding-left: 20px;
}

body:not(.cloud-theme) ul li::before {
    content: "> ";
    color: var(--accent-color);
    font-weight: bold;
    display: inline-block;
    width: 1.2em;
    margin-left: -1.2em;
}

body.cloud-theme ul {
    list-style-type: square;
    color: var(--accent-color);
}
body.cloud-theme ul li {
    color: var(--text-color);
}

.exp-item {
    margin-bottom: 30px;
    padding: 15px;
    border-left: 3px solid var(--prompt-color);
    background-color: rgba(0, 0, 0, 0.15);
    border-radius: 0 6px 6px 0;
    transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease;
}

body.cloud-theme .exp-item:hover {
    transform: var(--float-transform);
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    background-color: rgba(255, 255, 255, 0.4);
}

.exp-header {
    display: flex;
    justify-content: space-between;
    font-weight: bold;
    color: var(--prompt-color);
    margin-bottom: 10px;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
}

.skill-group {
    border: 1px dashed var(--border-color);
    padding: 15px;
    border-radius: 4px;
    transition: transform 0.3s ease, background-color 0.3s ease;
}

body.cloud-theme .skill-group:hover {
    transform: var(--float-transform);
    background-color: rgba(255, 255, 255, 0.5);
    border: 1px solid var(--accent-color);
}

.skill-group h3 {
    font-size: 0.9rem;
    color: var(--prompt-color);
    margin-bottom: 5px;
}

/* =========================================
   8. SYSTEM STATUS & FOOTER
   ========================================= */
.counter-box {
    border: 1px solid var(--border-color);
    padding: 12px;
    margin: 20px 0;
    display: inline-block;
    background: var(--counter-bg);
    border-radius: 4px;
    font-weight: bold;
}

.signature {
    margin-top: 50px;
    font-size: 1.2rem;
    color: var(--text-color);
}

body:not(.cloud-theme) .signature::after {
    content: "█";
    animation: blink 1s step-end infinite;
    color: var(--accent-color);
}

@keyframes blink {
    from, to { opacity: 1; }
    50% { opacity: 0; }
}

footer {
    text-align: center;
    margin-top: 20px;
    font-size: 0.8rem;
    opacity: 0.6;
}

/* =========================================
   9. PRINT OPTIMIZATION (CLEAN CV)
   ========================================= */
@media print {
    body {
        background: white !important;
        color: black !important;
        padding: 0 !important;
        font-family: 'Inter', 'Segoe UI', Arial, sans-serif !important;
    }
    
    main, header {
        box-shadow: none !important;
        border: none !important;
        max-width: 100% !important;
        background: white !important;
        padding: 0 !important;
        backdrop-filter: none !important;
    }
    
    .no-print {
        display: none !important;
    }
    
    .print-only {
        display: inline !important;
    }

    h1, h2, h3, p, li, a, span, i.fas, i.fab {
        color: black !important;
    }
    
    h1 { margin-top: 0; padding-top: 0; }
    
    h1::before, h2::before, h2::after, ul li::before, .signature::after {
        content: none !important;
    }
    
    ul { 
        list-style-type: disc !important; 
        padding-left: 20px !important; 
    }
    
    .exp-item { 
        border-left: none !important; 
        background: transparent !important; 
        padding-left: 0 !important; 
        margin-bottom: 20px !important; 
    }
    
    .skill-group { 
        border: none !important; 
        padding: 0 !important; 
        margin-bottom: 15px !important; 
    }
    
    .skills-grid { 
        display: block !important; 
    }
    
    .contact-line { 
        opacity: 1 !important; 
        margin-bottom: 25px !important; 
        line-height: 1.5 !important;
    }
}

/* =========================================
   10. ANIMATIONS (Scroll Reveal)
   ========================================= */

/* Header Load Animation */
header {
    animation: slideDownFade 0.8s ease-out forwards;
}

@keyframes slideDownFade {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Scroll Fade-In Sections */
.fade-in-section {
    opacity: 0;
    transform: translateY(30px);
    visibility: hidden;
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
    will-change: opacity, visibility; /* Optimizes browser rendering */
}

.fade-in-section.is-visible {
    opacity: 1;
    transform: none;
    visibility: visible;
}

/* Ensure animations don't trigger during print */
@media print {
    .fade-in-section {
        opacity: 1 !important;
        transform: none !important;
        visibility: visible !important;
        transition: none !important;
    }
    header {
        animation: none !important;
    }
}