/* --- CSS VARIABLE TOKENS --- */
:root {
    --bg-dark: #08020f;
    --primary: #8a2bbe;
    --primary-glow: rgba(138, 43, 226, 0.45);
    
    /* Cinematic Route-specific Cosmic Colors */
    --color-resume: #8a2bbe;      /* Purple */
    --color-projects: #1e90ff;    /* Electric Blue */
    --color-certificates: #ff007f;/* Pink Nebula */
    --color-music: #7b2cbf;       /* Violet */
    --color-contact: #00ffff;     /* Cyan */
    
    --text-light: #ffffff;
    --text-muted: rgba(255, 255, 255, 0.65);
    --glass-bg: rgba(12, 6, 22, 0.55);
    --glass-border: rgba(138, 43, 226, 0.25);
    
    --ease-portal: cubic-bezier(0.76, 0, 0.24, 1);
    --ease-hover: cubic-bezier(0.25, 0.8, 0.25, 1);
    --font-heading: 'Orbitron', sans-serif;
    --font-body: 'Space Grotesk', sans-serif;
}

/* --- RESET & LAYOUT SYSTEMS --- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    background-color: var(--bg-dark);
}

body {
    width: 100%;
    min-height: 100vh;
    background-color: transparent;
    font-family: var(--font-body);
    color: var(--text-light);
    overflow-x: hidden;
    scroll-behavior: smooth;
}

/* Hide scrollbars for cinematic immersion, yet preserve scrolling functionality */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: rgba(8, 2, 15, 0.5);
}
::-webkit-scrollbar-thumb {
    background: rgba(138, 43, 226, 0.4);
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--color-contact);
}

/* --- ACCESSIBILITY & FOCUS STYLING --- */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
    outline: 2px solid var(--color-contact);
    outline-offset: 4px;
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation-delay: 0s !important;
        animation-duration: 0s !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0s !important;
        scroll-behavior: auto !important;
    }
}

/* --- SHARED BACKGROUND CONTAINER --- */
#starfield {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -10;
    pointer-events: none;
    background: 
        radial-gradient(circle at center, rgba(138, 43, 226, 0.08) 0%, rgba(30, 144, 255, 0.03) 40%, transparent 70%),
        radial-gradient(circle at center, #120524 0%, #08020f 80%);
}

.nebula-glow {
    display: none !important;
}

/* --- MAIN PAGE WRAPPER --- */
.hero-container {
    position: relative;
    width: 100vw;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    will-change: transform, opacity;
}

/* --- LIQUID ENERGY TRANSITION SYSTEM --- */
.portal-transition {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 9999;
    pointer-events: none;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

.portal-layer {
    position: absolute;
    width: 150vmax;
    height: 150vmax;
    border-radius: 43% 57% 38% 62% / 54% 41% 59% 46%;
    transform: scale(0) rotate(0deg);
    transform-origin: center;
    transition: transform 900ms var(--ease-portal), border-radius 900ms var(--ease-portal);
    will-change: transform, border-radius;
}

.portal-layer-1 {
    background: var(--color-resume);
    z-index: 10000;
}

.portal-layer-2 {
    background: #0d041a;
    z-index: 10001;
    transition-delay: 100ms;
}

/* Portal Active Class Triggered by JS */
.portal-transition.active .portal-layer-1 {
    transform: scale(1.5) rotate(270deg);
    border-radius: 50% 50% 50% 50% / 50% 50% 50% 50%;
}
.portal-transition.active .portal-layer-2 {
    transform: scale(1.5) rotate(-180deg);
    border-radius: 50% 50% 50% 50% / 50% 50% 50% 50%;
}

/* --- GLASSMORPHISM CARD ELEMENTS --- */
.glass-panel {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 16px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.4), inset 0 0 20px rgba(138, 43, 226, 0.1);
    padding: 30px;
    color: var(--text-light);
    pointer-events: auto;
}

/* --- SYSTEM HUD (AUDIO AMBIENCE BUTTON & FLOATING NAV) --- */
.hud-btn {
    position: fixed;
    background: rgba(12, 6, 22, 0.6);
    border: 1px solid var(--glass-border);
    color: var(--text-muted);
    padding: 10px 18px;
    border-radius: 30px;
    cursor: pointer;
    font-family: var(--font-body);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    z-index: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s var(--ease-hover);
    backdrop-filter: blur(10px);
}
.hud-btn:hover {
    border-color: var(--color-contact);
    color: #fff;
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.25);
    transform: translateY(-2px);
}
.audio-btn {
    width: 42px;
    height: 42px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}
.audio-btn svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
    display: block;
}
.home-btn {
    top: 25px;
    right: 25px;
    text-decoration: none;
}
.home-btn svg {
    width: 14px;
    height: 14px;
    fill: currentColor;
}

/* Hide legacy HUD controls globally in favor of the new unified floating navbar */
.hud-btn {
    display: none !important;
}

/* --- COSMIC COLOR SCHEME DATA THEMES --- */
/* Default Purple Theme */
:root, [data-theme="purple"] {
    --primary: #8a2bbe;
    --primary-glow: rgba(138, 43, 226, 0.45);
    --glass-border: rgba(138, 43, 226, 0.25);
    --color-resume: #8a2bbe;
    --color-projects: #1e90ff;
    --color-certificates: #ff007f;
    --color-music: #7b2cbf;
    --color-contact: #00ffff;
}

[data-theme="blue"] {
    --primary: #00a2ff;
    --primary-glow: rgba(0, 162, 255, 0.45);
    --glass-border: rgba(0, 162, 255, 0.25);
    --color-resume: #00a2ff;
    --color-projects: #00a2ff;
    --color-certificates: #00d2ff;
    --color-music: #0088ff;
    --color-contact: #00ffff;
}

[data-theme="pink"] {
    --primary: #ff007f;
    --primary-glow: rgba(255, 0, 127, 0.45);
    --glass-border: rgba(255, 0, 127, 0.25);
    --color-resume: #ff007f;
    --color-projects: #ff00ab;
    --color-certificates: #ff0055;
    --color-music: #d9006c;
    --color-contact: #00ffff;
}

[data-theme="cyan"] {
    --primary: #00ffff;
    --primary-glow: rgba(0, 255, 255, 0.45);
    --glass-border: rgba(0, 255, 255, 0.25);
    --color-resume: #00ffff;
    --color-projects: #00e5ff;
    --color-certificates: #00ffaa;
    --color-music: #00cccc;
    --color-contact: #ff007f;
}

/* --- STANDALONE FLOATING CONTROLS & UNIFIED VOLUME SYSTEM --- */
.header-volume {
    position: fixed;
    top: 25px;
    left: 25px;
    z-index: 1010;
}

.floating-right-controls {
    position: fixed;
    top: 25px;
    right: 25px;
    z-index: 1010;
    display: flex;
    gap: 12px;
    align-items: center;
}

.floating-control-btn {
    background: rgba(12, 6, 22, 0.55);
    backdrop-filter: blur(12px) saturate(180%);
    -webkit-backdrop-filter: blur(12px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.08);
    outline: none;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    cursor: pointer;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3), 
                inset 0 1px 0 0 rgba(255, 255, 255, 0.08);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    flex-shrink: 0;
}

/* Unified Volume System */
.volume-container {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 0;
}

.volume-slider {
    width: 0;
    opacity: 0;
    pointer-events: none;
    -webkit-appearance: none;
    background: rgba(255, 255, 255, 0.15);
    height: 4px;
    border-radius: 2px;
    outline: none;
    cursor: pointer;
    transition: width 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease;
}

.volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #fff;
    box-shadow: 0 0 10px rgba(138, 43, 226, 0.8);
    transition: transform 0.2s ease, background-color 0.2s ease;
}

.volume-slider::-webkit-slider-thumb:hover {
    transform: scale(1.3);
    background: var(--color-contact, #8a2be2);
}

/* Hover/Focus reveal for desktop */
@media (min-width: 769px) {
    .volume-container:hover .volume-slider,
    .volume-container:focus-within .volume-slider {
        width: 70px;
        opacity: 1;
        pointer-events: auto;
    }
}

/* On mobile viewports: always visible and fully functional */
@media (max-width: 768px) {
    .volume-container .volume-slider {
        width: 60px !important;
        opacity: 1 !important;
        pointer-events: auto !important;
    }
}

.floating-control-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
    box-shadow: 0 0 15px var(--primary-glow);
    transform: scale(1.08);
}

.nav-svg-icon {
    width: 20px;
    height: 20px;
    fill: currentColor;
    transition: fill 0.3s ease;
}

/* Hamburger lines style */
.hamburger-btn {
    flex-direction: column;
    gap: 4.5px;
}

.hamburger-line {
    display: block;
    width: 18px;
    height: 2px;
    background-color: currentColor;
    border-radius: 1px;
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), 
                opacity 0.3s ease, 
                background-color 0.3s ease;
}

/* Active hamburger states based on body.menu-active */
body.menu-active .hamburger-btn .line-1 {
    transform: translateY(6.5px) rotate(45deg);
}

body.menu-active .hamburger-btn .line-2 {
    opacity: 0;
}

body.menu-active .hamburger-btn .line-3 {
    transform: translateY(-6.5px) rotate(-45deg);
}

/* --- COSMIC MENU OVERLAY --- */
.cosmic-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(8, 2, 15, 0.95);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1), 
                visibility 0.5s;
    overflow-y: auto;
    padding: 60px 20px;
    box-sizing: border-box;
}

body.menu-active .cosmic-menu-overlay {
    opacity: 1;
    visibility: visible;
}

.menu-overlay-inner {
    width: 100%;
    max-width: 1000px;
    margin: auto;
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.menu-grid-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    width: 100%;
}

@media (max-width: 768px) {
    .menu-grid-container {
        grid-template-columns: 1fr;
        gap: 14px;
        max-width: 450px;
        margin: 0 auto;
    }
    .menu-card {
        padding: 16px 20px;
    }
    .menu-card-title {
        font-size: 1.35rem;
    }
    .menu-card-num {
        font-size: 0.75rem;
        margin-bottom: 2px;
    }
}

@media (max-width: 480px) {
    .menu-grid-container {
        grid-template-columns: 1fr;
        gap: 10px;
        max-width: 100%;
    }
    .menu-card {
        padding: 10px 16px;
        border-radius: 6px;
    }
    .menu-card-title {
        font-size: 1.15rem;
    }
    .menu-card-num {
        font-size: 0.65rem;
        margin-bottom: 0px;
    }
}

/* White tilted cards exactly matching the image */
.menu-card {
    background: #ffffff;
    border-radius: 8px;
    padding: 36px 24px;
    text-decoration: none;
    color: #08020f;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    opacity: 0;
    transform: translateY(40px) scale(0.9);
}

body.menu-active .menu-card {
    opacity: 1;
    transform: translateY(0) scale(1);
}

/* Different tilts for each card to create the beautiful organic floating grid from the image */
.card-tilt-1 { transform: rotate(-3deg); transition-delay: 0.03s; }
.card-tilt-2 { transform: rotate(2deg); transition-delay: 0.06s; }
.card-tilt-3 { transform: rotate(-1.5deg); transition-delay: 0.09s; }
.card-tilt-4 { transform: rotate(1.5deg); transition-delay: 0.12s; }
.card-tilt-5 { transform: rotate(-2deg); transition-delay: 0.15s; }
.card-tilt-6 { transform: rotate(2.5deg); transition-delay: 0.18s; }
.card-tilt-7 { transform: rotate(-1deg); transition-delay: 0.21s; }

/* Tilt overrides when active menu is active */
body.menu-active .menu-card.card-tilt-1 { transform: translateY(0) rotate(-3deg) scale(1); }
body.menu-active .menu-card.card-tilt-2 { transform: translateY(0) rotate(2deg) scale(1); }
body.menu-active .menu-card.card-tilt-3 { transform: translateY(0) rotate(-1.5deg) scale(1); }
body.menu-active .menu-card.card-tilt-4 { transform: translateY(0) rotate(1.5deg) scale(1); }
body.menu-active .menu-card.card-tilt-5 { transform: translateY(0) rotate(-2deg) scale(1); }
body.menu-active .menu-card.card-tilt-6 { transform: translateY(0) rotate(2.5deg) scale(1); }
body.menu-active .menu-card.card-tilt-7 { transform: translateY(0) rotate(-1deg) scale(1); }

.menu-card:hover {
    transform: scale(1.06) rotate(0deg) !important;
    background: #ffffff;
    box-shadow: 0 15px 35px rgba(255, 255, 255, 0.4), 
                0 0 25px var(--primary-glow);
}

.menu-card-num {
    font-family: monospace;
    font-size: 0.8rem;
    color: rgba(8, 2, 15, 0.45);
    margin-bottom: 8px;
    letter-spacing: 2px;
    font-weight: 700;
}

.menu-card-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.8rem;
    font-weight: 500;
    text-transform: lowercase;
    letter-spacing: 1px;
    transition: color 0.3s ease;
}

.menu-card:hover .menu-card-title {
    color: var(--primary);
}

/* Overlay footer styling */
.menu-overlay-footer {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 24px;
    width: 100%;
}

.menu-overlay-footer .footer-meta {
    font-family: monospace;
    font-size: 0.75rem;
    color: var(--text-muted);
    letter-spacing: 1px;
}