:root {
    --bg-color: #0d1128;
    --surface-color: #131630;
    --primary-color: #8b5cf6;
    --accent-color: #22d3ee;
    --border-color: rgba(139, 92, 246, 0.2);
    --border-hover: rgba(139, 92, 246, 0.5);
    --scrollbar-bg: #131630;
    --scrollbar-thumb: #1e1b4b;
    --gradient: linear-gradient(135deg, #8b5cf6, #22d3ee);
    --text-color: #E8EDF5;
    --text-muted: #7A9BBF;
    --shadow-color: rgba(139, 92, 246, 0.25);
    --on-primary: #ffffff;
}

[data-theme="light"] {
    --bg-color: #f5f3ff;

    --surface-color: #ffffff;
    --primary-color: #6d28d9;

    --accent-color: #3b9eff;

    --border-color: #ddd6fe;

    --border-hover: #c4b5fd;

    --text-color: #000000;

    --text-muted: #4b5563;

    --shadow-color: rgba(109, 40, 217, 0.2);
    --gradient: linear-gradient(135deg, #6d28d9, #3b9eff);
    --scrollbar-bg: #f5f3ff;
    --scrollbar-thumb: #ddd6fe;
    --on-primary: #ffffff;
    --section-border: #e9e4ff;
}

/* Redundant global borders removed to avoid duplication with explicit utility classes */


[data-theme="light"] .bg-navy-surface {
    background-color: #ffffff;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
}

[data-theme="light"] .bg-navy-surface\/50 {
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(8px);
    border: 1px solid var(--border-color);
}


[data-theme="light"] .bg-success-bg {
    background-color: #eff7ff !important;
    border-color: #3b9eff !important;
}

[data-theme="light"] .border-success\/30 {
    border-color: #3b9eff !important;
}

[data-theme="light"] .text-success {
    color: #1a4e7a !important;
}


[data-theme="light"] .font-mono.text-primary,
[data-theme="light"] .bg-success,
[data-theme="light"] i.text-primary,
[data-theme="light"] svg.text-primary,
[data-theme="light"] i.text-success,
[data-theme="light"] svg.text-success,
[data-theme="light"] .hover\:text-primary:hover,
[data-theme="light"] .border-primary\/30 {
    color: #3b9eff !important;
}

[data-theme="light"] .bg-success,
[data-theme="light"] .bg-success.animate-pulse {
    background-color: #3b9eff !important;
}

[data-theme="light"] .before\:from-primary:before {
    background-image: linear-gradient(to bottom, #3b9eff, transparent) !important;
}

[data-theme="light"] .border-primary\/30 {
    border-color: rgba(59, 158, 255, 0.3) !important;
}

[data-theme="light"] .p-4 .text-primary,
[data-theme="light"] .p-3 .text-primary {
    color: #3b9eff !important;
}

[data-theme="light"] .text-success\/90 {
    color: #1a4e7a !important;
    font-weight: 600;
}

*,
*::before,
*::after {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
}


::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--scrollbar-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}


.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1), background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

.stagger-1 {
    transition-delay: 0.1s;
}

.stagger-2 {
    transition-delay: 0.2s;
}

.stagger-3 {
    transition-delay: 0.3s;
}

.stagger-4 {
    transition-delay: 0.4s;
}


.marquee-wrapper {
    overflow: hidden;
    white-space: nowrap;
    display: flex;
    position: relative;
    width: 100%;

    -webkit-mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
    mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
}

.marquee-content {
    display: flex;
    align-items: center;
    gap: 3rem;
    padding-right: 3rem;
    animation: scroll 40s linear infinite;

    width: max-content;
}

.marquee-wrapper:hover .marquee-content {
    animation-play-state: paused;
}

@keyframes scroll {
    0% {
        transform: translateX(0);
    }

    100% {
        transform: translateX(-50%);
    }
}


@keyframes pulse-glow {

    0%,
    100% {
        box-shadow:
            0 0 15px var(--shadow-color),
            0 0 30px var(--shadow-color);
        transform: scale(1);
    }

    50% {
        box-shadow:
            0 0 25px var(--shadow-color),
            0 0 60px var(--shadow-color),
            0 0 80px rgba(139, 92, 246, 0.1);
        transform: scale(1.02);
    }
}

.profile-glow {
    animation: pulse-glow 4s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}



.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    margin-left: 1.5rem;
    display: flex;
    align-items: center;
}

.theme-toggle__track {
    width: 52px;
    height: 28px;
    background: var(--gradient);
    border-radius: 999px;
    display: flex;
    align-items: center;
    padding: 3px;
    transition: background 0.35s ease;
    box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.1);
}

.theme-toggle__thumb {
    width: 22px;
    height: 22px;
    background: #ffffff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
    color: #7c3aed;
    transform: translateX(0);
}


.icon-sun {
    display: none;
}

.icon-moon {
    display: block;
}


[data-theme="light"] .theme-toggle__thumb {
    transform: translateX(24px);
    color: #3b9eff;
}

[data-theme="light"] .icon-sun {
    display: block;
}

[data-theme="light"] .icon-moon {
    display: none;
}

/* --- Language Switch Styles --- */
/* Prevent Flash of Untranslated Content (FOUT) */
[data-i18n] {
    opacity: 0;
}

body.i18n-ready [data-i18n] {
    opacity: 1;
}

/* Specific handling for intro which has its own visibility logic */
#intro-overlay [data-i18n] {
    opacity: 1;
}

.lang-switch {
    position: relative;
    cursor: pointer;
    color: var(--text-muted);
}

.lang-switch.is-active {
    background-color: var(--primary-color) !important;
    color: var(--on-primary) !important;
    box-shadow: 0 2px 10px var(--shadow-color);
}

[data-theme="light"] .lang-switch.is-active {
    background-color: var(--primary-color) !important;
    color: #ffffff !important;
}

.lang-switch:not(.is-active):hover {
    color: var(--primary-color);
}

/* --- Navigation Highlighting --- */
.nav-link-active {
    color: var(--primary-color) !important;
}

/* Underline for Desktop Menu */
@media (min-width: 768px) {
    div.hidden.md\:flex a.nav-link-active {
        position: relative;
    }
    
    div.hidden.md\:flex a.nav-link-active::after {
        content: '';
        position: absolute;
        bottom: -4px;
        left: 0;
        width: 100%;
        height: 2px;
        background: var(--primary-color);
        border-radius: 2px;
        box-shadow: 0 0 10px var(--shadow-color);
        animation: slideIn 0.3s ease-out forwards;
    }
}

@keyframes slideIn {
    from {
        width: 0;
        opacity: 0;
    }
    to {
        width: 100%;
        opacity: 1;
    }
}

/* Specific styling for mobile menu active links */
#mobile-menu a.nav-link-active {
    background-color: var(--primary-color);
    color: var(--on-primary) !important;
    padding-left: 1rem;
    border-radius: 0.5rem;
    box-shadow: 0 4px 15px var(--shadow-color);
}
#mobile-menu a.nav-link-active i {
    color: var(--on-primary) !important;
}

/* --- Mobile Menu Push Effect --- */
#mobile-menu {
    position: fixed;
    top: 0;
    left: -280px;
    width: 280px;
    height: 100vh;
    background-color: var(--surface-color);
    z-index: 1000;
    transition: left 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 2rem;
    box-shadow: 10px 0 30px rgba(0, 0, 0, 0.2);
}

body.menu-open #mobile-menu {
    left: 0;
}

#app-wrapper {
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    width: 100%;
    min-height: 100vh;
    overflow-x: hidden;
}

body.menu-open #app-wrapper {
    transform: translateX(280px);
}

#menu-backdrop {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 900;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s ease;
}

body.menu-open #menu-backdrop {
    opacity: 1;
    pointer-events: auto;
}

/* Custom Hamburger Animation */
#mobile-menu-btn {
    position: relative;
    z-index: 50;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

#mobile-menu-btn .hamburger-box {
    width: 24px;
    height: 18px;
    position: relative;
    display: block;
}

#mobile-menu-btn .hamburger-inner {
    width: 100%;
    height: 2px;
    background-color: var(--text-color);
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    transition: background-color 0s 0.2s;
}

#mobile-menu-btn .hamburger-inner::before,
#mobile-menu-btn .hamburger-inner::after {
    content: '';
    width: 100%;
    height: 2px;
    background-color: var(--text-color);
    position: absolute;
    left: 0;
    transition: transform 0.3s cubic-bezier(0.55, 0.055, 0.675, 0.19);
}

#mobile-menu-btn .hamburger-inner::before { top: -8px; }
#mobile-menu-btn .hamburger-inner::after { bottom: -8px; }

body.menu-open #mobile-menu-btn .hamburger-inner {
    background-color: transparent !important;
}

body.menu-open #mobile-menu-btn .hamburger-inner::before {
    transform: translateY(8px) rotate(45deg);
}

body.menu-open #mobile-menu-btn .hamburger-inner::after {
    transform: translateY(-8px) rotate(-45deg);
}

@media (min-width: 768px) {
    #mobile-menu, #menu-backdrop, #mobile-menu-btn {
        display: none !important;
    }
    #app-wrapper {
        transform: none !important;
    }
}