/* Global Theme Variables */

:root {
    /* Auto dark mode base based on OS, or overridden by class */
    --bg-image: url("background.jpeg");
    --text-primary: #333;
    --text-secondary: #444;
    --text-muted: #ccc;
    --heading-color: #1a1a1a;
    --nav-bg: rgba(51, 51, 51, 0.95);
    --card-bg: rgba(255, 255, 255, 0.2);
    --card-bg-hover: rgba(255, 255, 255, 0.4);
    --card-border: rgba(255, 255, 255, 0.3);
    --btn-bg: #333;
    --btn-text: white;
    --accent: #3b82f6;
    --glass-shadow: rgba(0, 0, 0, 0.1);
    --glass-shadow-hover: rgba(0, 0, 0, 0.15);
    --input-bg: rgba(255, 255, 255, 0.8);
    --input-border: rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] {
    /* Dark Mode Overrides - Deep Space Feel */
    --bg-image: none;
    --text-primary: #f0f0f0;
    --text-secondary: #d0d0d0;
    --text-muted: #888;
    --heading-color: #ffffff;
    --nav-bg: rgba(10, 10, 10, 0.95);
    --card-bg: rgba(30, 30, 30, 0.5);
    --card-bg-hover: rgba(40, 40, 40, 0.7);
    --card-border: rgba(255, 255, 255, 0.1);
    --btn-bg: #ffffff;
    --btn-text: #1a1a1a;
    --accent: #3b82f6;
    --glass-shadow: rgba(0, 0, 0, 0.5);
    --glass-shadow-hover: rgba(0, 0, 0, 0.7);
    --input-bg: rgba(30, 30, 30, 0.8);
    --input-border: rgba(255, 255, 255, 0.1);
}

/* --- Theme Toggle Switch --- */
.theme-switch {
    position: relative;
    display: inline-block;
    width: 75px;
    height: 26px;
    margin-left: 15px;
}

.theme-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.2);
    transition: .4s;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
    z-index: 2;
}

.slider::after {
    position: absolute;
    content: "LIGHT";
    color: var(--text-primary);
    font-size: 0.65rem;
    font-weight: bold;
    top: 50%;
    transform: translateY(-50%);
    right: 10px;
    z-index: 1;
}

input:checked+.slider {
    background-color: var(--accent);
    border-color: var(--accent);
}

input:checked+.slider:before {
    transform: translateX(49px);
}

input:checked+.slider::after {
    content: "DARK";
    color: white;
    left: 10px;
    right: auto;
}

/* Rounded sliders */
.slider.round {
    border-radius: 34px;
}

.slider.round:before {
    border-radius: 50%;
}

/* --- Dark Mode Background Video --- */
#dark-bg-video {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    object-fit: cover;
    z-index: -2;
    opacity: 0;
    transition: opacity 1s ease;
    pointer-events: none;
    /* Allows clicks to pass through */
}

[data-theme="dark"] #dark-bg-video {
    opacity: 1;
}

/* --- Global Intersect Animations --- */
.scroll-observe {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.scroll-observe.animate-up-trigger {
    opacity: 1;
    transform: translateY(0);
}

/* Base delay overrides if needed */
.delay-1 {
    transition-delay: 0.1s;
}

.delay-2 {
    transition-delay: 0.3s;
}

.delay-3 {
    transition-delay: 0.5s;
}

.delay-4 {
    transition-delay: 0.7s;
}