/* ==================== */
/* Vector Art / Atmospheric Thematic Styles */
/* Theme: Digital Horizon (Tech / Nature Blend) */
/* ==================== */

#projects.section {
    position: relative;
    padding: 0 !important;
    overflow: hidden;
    transition: background 1.5s cubic-bezier(0.4, 0, 0.2, 1);
    height: 100vh;
    min-height: 600px;
    display: flex;
    flex-direction: column;
}

/* Night Mode (Default) */
#projects:not(.day-mode) {
    background: linear-gradient(to bottom, #090a0f 0%, #1b1626 40%, #2a223f 70%, #3d2f5b 100%) !important;
}

/* Day Mode */
#projects.day-mode {
    background: linear-gradient(to bottom, #4facfe 0%, #00f2fe 60%, #4ae5ff 100%) !important;
}

/* --- Typography --- */
#projects .section-title {
    display: block !important;
    text-align: center !important;
    font-size: 3rem;
    padding-top: 100px; /* Kept pulled down as requested */
    margin: 0;
    width: 100%;
    z-index: 100;
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, 0.9);
    text-shadow: 0 4px 15px rgba(0,0,0,0.4);
    font-family: 'Poppins', sans-serif;
    font-weight: 700;
    letter-spacing: 8px;
    text-transform: uppercase;
    pointer-events: none;
}

/* --- Container --- */
.mountain-world {
    position: relative;
    width: 100vw;
    flex-grow: 1;
    margin: 0 auto;
    background: transparent;
    overflow: hidden;
}

/* --- Atmospheric Sky Elements --- */
.sky-elements {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    pointer-events: none;
}

.sun, .moon {
    position: absolute;
    width: 100px;
    height: 100px;
    border-radius: 50%;
    transition: all 1.5s cubic-bezier(0.4, 0, 0.2, 1);
    left: 10%;
    top: 18%; /* Pulled down to match title space */
}

/* Theme Toggle Hint */
.theme-hint {
    position: absolute;
    top: 115px; /* Aligned with project title text */
    right: 40px; /* Slightly more breathing room from the edge */
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.85); /* Slightly brighter text */
    background: rgba(255, 255, 255, 0.12); /* Slightly more visible background */
    padding: 6px 15px;
    border-radius: 30px;
    backdrop-filter: blur(8px);
    z-index: 101;
    pointer-events: none;
    border: 1px solid rgba(255, 255, 255, 0.25); /* More defined border */
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.1);
    letter-spacing: 1px;
    text-transform: uppercase;
    animation: pulse-hint 2s infinite alternate;
}

@keyframes pulse-hint {
    from { opacity: 0.6; } /* Brighter base opacity */
    to { opacity: 1; }
}

.sun {
    background: radial-gradient(circle, #fff 0%, #ffdf00 40%, #ff8c00 100%);
    box-shadow: 0 0 60px #ffdf00, 0 0 120px rgba(255, 140, 0, 0.6);
}

.moon {
    background: radial-gradient(circle, #f4f6f0 0%, #e0e4dd 60%, #b8bec5 100%);
    box-shadow: 0 0 40px rgba(200, 210, 230, 0.6), inset -15px -15px 20px rgba(0,0,0,0.1);
    opacity: 0;
}

#projects.day-mode .sun { opacity: 1; transform: translateY(0); }
#projects.day-mode .moon { opacity: 0; transform: translateY(100px); }
#projects:not(.day-mode) .sun { opacity: 0; transform: translateY(100px); }
#projects:not(.day-mode) .moon { opacity: 1; transform: translateY(0); }

.star-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 60%;
    z-index: 1;
}

#projects.day-mode .star-container { opacity: 0; }

.pixel-star {
    position: absolute;
    width: 3px;
    height: 3px;
    background: #fff;
    border-radius: 50%;
    box-shadow: 0 0 6px #fff;
    animation: pulse-star 3s infinite alternate;
}

@keyframes pulse-star {
    0% { opacity: 0.3; transform: scale(0.8); }
    100% { opacity: 1; transform: scale(1.2); }
}

/* --- Professional Vector Clouds (Bubble Style) --- */
.vector-cloud {
    position: absolute;
    width: 120px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50px;
    animation: drift-cloud linear infinite;
    transition: all 1.5s ease;
}

.vector-cloud::before, .vector-cloud::after {
    content: '';
    position: absolute;
    background: inherit;
    border-radius: 50%;
}

.vector-cloud::before { width: 60px; height: 60px; top: -30px; left: 20px; }
.vector-cloud::after { width: 50px; height: 50px; top: -20px; right: 20px; }

#projects.day-mode .vector-cloud {
    background: rgba(255, 255, 255, 0.9);
    filter: drop-shadow(0 10px 20px rgba(0,0,0,0.05));
}

@keyframes drift-cloud {
    from { transform: translateX(-300px); }
    to { transform: translateX(120vw); }
}

.bird-container {
    position: absolute;
    top: 20%;
    left: -50px;
    animation: bird-fly 25s linear infinite;
    z-index: 10;
    opacity: 0;
}

#projects.day-mode .bird-container { opacity: 0.6; }

.vector-bird {
    width: 24px;
    height: 12px;
    position: relative;
}

.vector-bird::before, .vector-bird::after {
    content: '';
    position: absolute;
    top: 0;
    width: 14px;
    height: 2px;
    background: #1a2a40;
    border-radius: 2px;
}

.vector-bird::before {
    left: 0;
    transform-origin: right center;
    animation: wing-beat-l 0.6s ease-in-out infinite alternate;
}

.vector-bird::after {
    right: 0;
    transform-origin: left center;
    animation: wing-beat-r 0.6s ease-in-out infinite alternate;
}

@keyframes wing-beat-l { from { transform: rotate(-15deg); } to { transform: rotate(35deg); } }
@keyframes wing-beat-r { from { transform: rotate(15deg); } to { transform: rotate(-35deg); } }
@keyframes bird-fly { from { transform: translateX(-100px) translateY(0); } to { transform: translateX(120vw) translateY(-80px); } }

.meteor {
    position: absolute;
    top: -20%;
    left: 80%;
    width: 150px;
    height: 2px;
    background: linear-gradient(90deg, rgba(255,255,255,0) 0%, rgba(100,200,255,0.8) 80%, rgba(255,255,255,1) 100%);
    animation: meteor-slash 12s linear infinite;
    z-index: 1;
    opacity: 0;
}

@keyframes meteor-slash {
    0% { transform: translate(0, 0) rotate(-40deg); opacity: 0; }
    2% { opacity: 1; }
    6% { transform: translate(-80vw, 80vh) rotate(-40deg); opacity: 0; }
    100% { transform: translate(-80vw, 80vh) rotate(-40deg); opacity: 0; }
}

/* --- Complex Vector Mountains --- */
.vector-mtn {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    transition: background 1.5s ease, filter 1.5s ease;
}

.layer-back {
    z-index: 3;
    background: linear-gradient(to bottom, #4a3e6d 0%, #2a223f 100%);
    clip-path: polygon(0 100%, 0 60%, 10% 45%, 20% 55%, 30% 35%, 40% 50%, 50% 25%, 60% 45%, 70% 30%, 80% 55%, 90% 40%, 100% 50%, 100% 100%);
    filter: blur(4px);
    opacity: 0.7;
}

#projects.day-mode .layer-back {
    background: linear-gradient(to bottom, #7cc0ff 0%, #4facfe 100%);
}

.layer-mid {
    z-index: 4;
    background: linear-gradient(to bottom, #342854 0%, #1e1832 100%);
    clip-path: polygon(0 100%, 0 80%, 15% 65%, 25% 75%, 35% 55%, 45% 70%, 55% 45%, 65% 60%, 75% 40%, 85% 65%, 100% 55%, 100% 100%);
    filter: blur(1px);
}

#projects.day-mode .layer-mid {
    background: linear-gradient(to bottom, #4caf50 0%, #2e7d32 100%);
}

.layer-front {
    z-index: 5;
    background: linear-gradient(to bottom, #1d162d 0%, #0a0812 100%);
    clip-path: polygon(0% 100%, 0% 98%, 15% 98%, 25% 99%, 35% 62%, 40% 35%, 45% 88%, 55% 98%, 65% 48%, 70% 65%, 75% 75%, 85% 100%, 100% 100%);
    box-shadow: 0 -10px 40px rgba(0,0,0,0.6);
}

#projects.day-mode .layer-front {
    background: linear-gradient(to bottom, #2e7d32 0%, #1b5e20 100%);
}

.mountain-trail {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 6;
    pointer-events: none;
    border-top: 3px dashed rgba(0, 242, 254, 0.8);
    clip-path: polygon(0% 100%, 0% 98%, 15% 98%, 25% 99%, 35% 62%, 40% 35%, 45% 88%, 55% 98%, 65% 48%, 70% 65%, 75% 75%, 85% 100%, 100% 100%);
    filter: drop-shadow(0 -2px 5px rgba(0, 242, 254, 1));
}

#projects.day-mode .mountain-trail {
    border-top-color: rgba(255, 255, 255, 0.8);
    filter: drop-shadow(0 -2px 5px rgba(255, 255, 255, 0.5));
}

/* --- The Cyber-Hiker (Optimized for Smoothness) --- */
#climber {
    position: absolute;
    width: 30px;
    height: 50px;
    z-index: 100;
    transform: translateX(-50%); /* Centered horizontally, bottom property now controls the feet */
    pointer-events: none;
    will-change: left, bottom; /* Hardware acceleration */
}

#climber {
    --hiker-color: #00f2fe;
    --hiker-glow: rgba(0, 242, 254, 0.8);
}

#projects.day-mode #climber {
    --hiker-color: #ff5722;
    --hiker-glow: rgba(255, 87, 34, 0.4);
}

.hiker-head, .hiker-torso, .hiker-backpack, .hiker-arm, .hiker-leg {
    background: var(--hiker-color);
    border: 2px solid #000;
    box-shadow: 0 0 10px var(--hiker-glow);
    position: absolute;
    /* Limit transition to color/glow to avoid position lag */
    transition: background-color 1s ease, box-shadow 1s ease, border-color 1s ease;
}

.hiker-head { width: 14px; height: 14px; border-radius: 50%; top: -2px; left: 50%; transform: translateX(-50%); z-index: 2; }
.hiker-torso { width: 18px; height: 22px; border-radius: 4px; top: 13px; left: 50%; transform: translateX(-50%); z-index: 1; }
.hiker-backpack { width: 10px; height: 16px; border-radius: 3px; top: 15px; left: -5px; z-index: 0; }
.hiker-arm { width: 5px; height: 18px; top: 15px; border-radius: 3px; transform-origin: top center; z-index: 3; }
.hiker-arm-l { left: 2px; }
.hiker-arm-r { right: 2px; }
.hiker-leg { width: 6px; height: 18px; top: 33px; border-radius: 2px; transform-origin: top center; z-index: 1; }
.hiker-l { left: 7px; }
.hiker-r { right: 7px; }

#climber.climbing .hiker-l { animation: step-swing 0.6s infinite alternate; }
#climber.climbing .hiker-r { animation: step-swing 0.6s infinite alternate-reverse; }
#climber.climbing .hiker-arm-l { animation: step-swing 0.6s infinite alternate-reverse; } 
#climber.climbing .hiker-arm-r { animation: step-swing 0.6s infinite alternate; }

@keyframes step-swing {
    from { transform: rotate(-25deg); }
    to { transform: rotate(25deg); }
}

#climber.cheering { animation: slow-victory 0.8s infinite alternate; }
#climber.cheering .hiker-arm { transform: rotate(-150deg); top: 10px; }

@keyframes slow-victory {
    from { transform: translate(-50%, -100%) translateY(0); }
    to { transform: translate(-50%, -100%) translateY(-25px); }
}

/* --- Project Popup (Green Day Mode Theme) --- */
.project-popup {
    position: absolute;
    background: rgba(15, 20, 35, 0.85);
    border: 1px solid rgba(0, 242, 254, 0.3);
    border-radius: 12px;
    padding: 25px;
    color: #fff;
    width: 340px;
    z-index: 1000;
    box-shadow: 0 15px 35px rgba(0,0,0,0.5);
    font-family: 'Poppins', sans-serif;
    display: none;
    pointer-events: auto;
    backdrop-filter: blur(10px);
    transition: all 0.5s ease;
}

#projects.day-mode .project-popup {
    background: rgba(241, 248, 233, 0.95); /* Light Green Glass */
    border: 2px solid #2e7d32; /* Deep Green Border */
    color: #1b5e20; /* Dark Green Text */
    box-shadow: 0 15px 35px rgba(0, 50, 0, 0.1);
}

.project-popup.active {
    display: block;
    animation: float-up 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes float-up {
    from { transform: translateY(20px) scale(0.9); opacity: 0; }
    to { transform: translateY(0) scale(1); opacity: 1; }
}

.project-popup .close-popup {
    position: absolute; top: 15px; right: 15px;
    background: transparent; border: none; color: rgba(0,0,0,0.4);
    font-size: 24px; cursor: pointer;
}

.project-popup h3 { margin-top: 0; color: #00f2fe; border-bottom: 2px solid rgba(0, 242, 254, 0.2); padding-bottom: 10px; }
#projects.day-mode .project-popup h3 { color: #1b5e20; border-bottom-color: rgba(46, 125, 50, 0.2); }

.project-popup p { font-size: 13px; line-height: 1.6; }
.project-popup .project-tech { display: flex; flex-wrap: wrap; gap: 8px; margin: 15px 0; }
.project-popup .project-tech span { 
    background: rgba(0, 242, 254, 0.1); color: #00f2fe;
    padding: 4px 10px; font-size: 11px; border-radius: 4px;
    border: 1px solid rgba(0, 242, 254, 0.3); 
}

#projects.day-mode .project-popup .project-tech span {
    background: rgba(76, 175, 80, 0.1);
    color: #2e7d32;
    border-color: #81c784;
}

.project-popup .github-link { 
    display: inline-flex; align-items: center; margin-top: 10px; 
    background: linear-gradient(90deg, #00f2fe, #4facfe);
    color: #000; text-decoration: none; padding: 8px 20px; 
    border-radius: 25px; font-weight: 700;
}

#projects.day-mode .project-popup .github-link {
    background: linear-gradient(90deg, #4caf50, #2e7d32);
    color: #fff;
}

.mountain-marker { position: absolute; cursor: pointer; z-index: 20; transition: transform 0.3s; }
.mountain-marker:hover { transform: scale(1.2); }
.flag-pole { width: 3px; height: 50px; background: #888; position: relative; }
.flag-cloth { width: 30px; height: 20px; background: #e91e63; position: absolute; top: 2px; left: 3px; clip-path: polygon(0 0, 100% 0, 85% 50%, 100% 100%, 0 100%); animation: tech-wave 2s ease-in-out infinite; }
@keyframes tech-wave { 0%, 100% { transform: skewY(-2deg); } 50% { transform: skewY(10deg); } }

.back-to-top { bottom: 20px !important; left: 20px !important; right: auto !important; position: fixed !important; z-index: 9999; transform: scale(0.8); }
.back-to-top.visible { opacity: 0.9 !important; }

.pixel-footprint { position: absolute; width: 5px; height: 5px; background: var(--hiker-color); border-radius: 50%; z-index: 7; box-shadow: 0 0 10px var(--hiker-color); animation: energy-fade 2s forwards; }
@keyframes energy-fade { from { opacity: 1; transform: scale(1); } to { opacity: 0; transform: scale(0.2); } }

/* --- Thematic Modals --- */
.thematic-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s ease;
    backdrop-filter: blur(8px);
}

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

.thematic-modal .modal-content {
    background: #161b22;
    padding: 40px;
    border-radius: 20px;
    position: relative;
    max-width: 600px;
    width: 90%;
    transform: scale(0.8);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: 1px solid #30363d;
    box-shadow: 0 25px 50px rgba(0,0,0,0.5);
}

.thematic-modal.active .modal-content {
    transform: scale(1);
}

.thematic-modal .close-modal {
    position: absolute;
    top: 15px;
    right: 20px;
    background: none;
    border: none;
    color: #8b949e;
    font-size: 30px;
    cursor: pointer;
    transition: color 0.2s;
}

.thematic-modal .close-modal:hover {
    color: #ffffff;
}

#a-modal-inner-content {
    color: #f0f6fc;
}

#a-modal-inner-content h3 {
    color: #58a6ff;
    margin-bottom: 15px;
    font-size: 24px;
}

#a-modal-inner-content p {
    line-height: 1.6;
    color: #8b949e;
    font-size: 16px;
}

#a-modal-inner-content .achievement-year {
    display: inline-block;
    background: rgba(88, 166, 255, 0.1);
    color: #58a6ff;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 14px;
    margin-bottom: 15px;
}