/* Base styles and variables */
:root {
    --transition-speed: 0.3s;
}

:root[data-theme="dark"] {
    --color-background: #0a0a0a;
    --color-primary: #2a0a3a;
    --color-accent: #00f7ff;
    --color-text: #ffffff;
    --color-text-secondary: #b8b8b8;
    --color-card-bg: rgba(255, 255, 255, 0.05);
    --neon-glow: 0 0 10px rgba(0, 247, 255, 0.5);
    --navbar-bg: rgba(10, 10, 10, 0.95);
}

:root[data-theme="light"] {
    --color-background: #f5f5f5;
    --color-primary: #e0e0ff;
    --color-accent: #2a0a3a;
    --color-text: #000000;
    --color-text-secondary: #4a4a4a;
    --color-card-bg: rgba(0, 0, 0, 0.05);
    --neon-glow: none;
    --navbar-bg: rgba(245, 245, 245, 0.95);
}

/* Theme transition */
.theme-transition,
.theme-transition *,
.theme-transition *:before,
.theme-transition *:after {
    transition: all var(--transition-speed) ease !important;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    transition: background-color var(--transition-speed) ease,
                color var(--transition-speed) ease,
                border-color var(--transition-speed) ease,
                box-shadow var(--transition-speed) ease;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--color-background);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Prevent scroll when mobile menu is open */
body.no-scroll {
    overflow: hidden;
    position: fixed;
    width: 100%;
    height: 100%;
}

/* Základní animace pro scroll reveal */
[data-scroll] {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease;
}

[data-scroll].is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    line-height: 1.2;
}

h1 {
    font-size: 4rem;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: var(--color-accent);
    letter-spacing: -0.01em;
}

h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    letter-spacing: -0.01em;
}

a {
    color: var(--color-text);
    text-decoration: none;
    transition: all 0.3s ease;
}

button {
    font-family: 'Poppins', sans-serif;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    outline: none;
}

/* Light theme adjustments */
[data-theme="light"] .navbar {
    background: var(--navbar-bg);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .team-member {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

[data-theme="light"] .status-dot.online {
    box-shadow: 0 0 5px #00ff00;
}

/* Section Spacing */
section {
    padding: 5rem 0;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Responsive Typography */
@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 2rem;
    }

    h3 {
        font-size: 1.5rem;
    }

    section {
        padding: 3rem 0;
    }
}