:root {
    --primary-color: #212121;
    --secondary-color: #ffffff;
    --glow-color: rgba(255, 255, 255, 0.1);
    --hover-glow: rgba(255, 255, 255, 0.2);
    --grid-color: #ffffff;
    --grid-opacity: 0.00;
    --container-padding: 0rem;
    --container-max-width: 480px;
    --container-width: 95vw;
    --font-size-base: 1rem;
    --font-size-h1: 2.5rem;
    --font-size-subtitle: 1.15rem;
    --font-size-contact: 1.2rem;
    --font-size-button: 1.2rem;
    --spacing-base: 1rem;
    --spacing-large: 2rem;
    --favicon-path: 'logo.png';
}

@media (prefers-color-scheme: light) {
    :root {
        --primary-color: #f7f7f7;
        --secondary-color: #383a42;
        --glow-color: rgba(0, 0, 0, 0.666);
        --hover-glow: rgba(0, 0, 0, 0.2);
        --grid-color: #383a42;
        --grid-opacity: 0.00;
    }
}

/* Mobile-specific variables */
@media (max-width: 600px) {
    :root {
        --container-padding: 1rem;
        --container-max-width: 98vw;
        --container-width: 100vw;
        --font-size-base: 1rem;
        --font-size-h1: 1.5rem;
        --font-size-subtitle: 1.1rem;
        --font-size-contact: 1rem;
        --font-size-button: 1.1rem;
        --spacing-base: 0.8rem;
        --spacing-large: 1.2rem;
    }

    .container, .emotion-container {
        padding: var(--container-padding);
        width: var(--container-width);
        max-width: var(--container-max-width);
        margin: 1.2rem auto 0 auto;
        border-radius: 0.5rem;
        border-width: 1px;
        border-left: none;
        border-right: none;
        box-sizing: border-box;
    }

    h1 {
        font-size: var(--font-size-h1);
        margin-bottom: 0.5rem;
        margin-top: 0.2rem;
        letter-spacing: 1.2px;
        font-weight: bold;
    }

    .subtitle {
        font-size: var(--font-size-subtitle);
        margin-bottom: 1.2rem;
        margin-top: 0.2rem;
        letter-spacing: 0.7px;
    }

    .contact-info {
        display: flex;
        flex-direction: column;
        gap: 0.6rem;
        margin-bottom: 1.2rem;
    }

    .contact-item {
        font-size: var(--font-size-contact);
        padding: 0.4rem 0.5rem;
        gap: 0.5rem;
        margin: 0;
        display: flex;
        align-items: center;
    }

    .contact-item i {
        font-size: 1.3rem;
        min-width: 1.3rem;
    }

    .emotion-button, .cv-button {
        font-size: var(--font-size-button);
        padding: 0.9rem 0.5rem;
        margin: var(--spacing-base) auto 0 auto;
        width: 100%;
        min-height: 44px;
        border-width: 1px;
        border-radius: 0.4rem;
        display: flex;
        align-items: center;
        justify-content: center;
        box-sizing: border-box;
    }

    .emotion-button i, .cv-button i {
        margin-right: 8px;
        font-size: 1.2rem;
    }

    .video-area {
        max-width: 100%;
        border-radius: 0.5rem;
    }

    #emotions-data {
        font-size: var(--font-size-base);
        padding: var(--spacing-base);
        min-width: 100px;
    }

    /* Adjust grid for mobile */
    body::before {
        background-size: 16px 16px;
    }
}

/* Additional mobile optimizations */
@media (max-width: 400px) {
    :root {
        --font-size-h1: 1.2rem;
        --font-size-subtitle: 0.95rem;
        --font-size-contact: 0.95rem;
        --font-size-button: 1rem;
        --spacing-base: 0.5rem;
        --spacing-large: 0.8rem;
    }

    .container, .emotion-container {
        padding: var(--spacing-base);
    }

    .contact-info {
        gap: var(--spacing-base);
    }
}

/* Common styles */
html, body {
    height: 100%;
    min-height: 100%;
    font-family: Georgia, 'Times New Roman', Times, serif;
    background-color: var(--primary-color);
    color: var(--secondary-color);
    margin: 0;
    padding: 0;
    position: relative;
    transition: background-color 0.3s ease, color 0.3s ease;
    font-size: var(--font-size-base);
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: 
        linear-gradient(45deg, transparent 48%, var(--grid-color) 49%, var(--grid-color) 51%, transparent 52%),
        linear-gradient(-45deg, transparent 48%, var(--grid-color) 49%, var(--grid-color) 51%, transparent 52%);
    background-size: 30px 30px;
    opacity: var(--grid-opacity);
    z-index: 1;
    pointer-events: none;
}

@keyframes flame-glow {
  0% {
    box-shadow: 0 0 18px 4px #ffb347, 0 0 32px 12px #ffcc80, 0 0 60px 24px rgba(255, 140, 0, 0.2);
    border-color: #ffb347;
    filter: blur(0.5px);
    transform: scale(1) skewX(0deg);
  }
  10% {
    box-shadow: 0 0 22px 6px #ffcc80, 0 0 38px 14px #ffd580, 0 0 70px 28px rgba(255, 140, 0, 0.25);
    border-color: #ffd580;
    filter: blur(1px);
    transform: scale(1.01) skewX(-1deg);
  }
  23% {
    box-shadow: 0 0 30px 10px #ffb347, 0 0 45px 18px #ffcc80, 0 0 80px 32px rgba(255, 140, 0, 0.3);
    border-color: #ffb347;
    filter: blur(0.7px);
    transform: scale(1.02) skewX(2deg);
  }
  37% {
    box-shadow: 0 0 25px 8px #ffd580, 0 0 40px 16px #ffb347, 0 0 60px 24px rgba(255, 140, 0, 0.22);
    border-color: #ffd580;
    filter: blur(1.2px);
    transform: scale(0.99) skewX(-2deg);
  }
  51% {
    box-shadow: 0 0 35px 12px #ffb347, 0 0 55px 22px #ffcc80, 0 0 90px 36px rgba(255, 140, 0, 0.35);
    border-color: #ffb347;
    filter: blur(0.8px);
    transform: scale(1.03) skewX(1deg);
  }
  68% {
    box-shadow: 0 0 20px 7px #ffd580, 0 0 36px 13px #ffb347, 0 0 65px 26px rgba(255, 140, 0, 0.18);
    border-color: #ffd580;
    filter: blur(1.1px);
    transform: scale(0.98) skewX(-1deg);
  }
  83% {
    box-shadow: 0 0 28px 9px #ffb347, 0 0 48px 19px #ffcc80, 0 0 85px 34px rgba(255, 140, 0, 0.28);
    border-color: #ffb347;
    filter: blur(0.6px);
    transform: scale(1.01) skewX(2deg);
  }
  100% {
    box-shadow: 0 0 18px 4px #ffb347, 0 0 32px 12px #ffcc80, 0 0 60px 24px rgba(255, 140, 0, 0.2);
    border-color: #ffb347;
    filter: blur(0.5px);
    transform: scale(1) skewX(0deg);
  }
}

.glow-container {
  animation: flame-glow 3.5s infinite linear;
  position: relative;
  z-index: 2;
  background: color-mix(in srgb, var(--primary-color) 80%, transparent);
  box-shadow: 0 0 20px var(--glow-color);
  border: 1px solid var(--secondary-color);
  transition: all 0.3s ease;
}

/* Custom Scrollbar Styling for Dark/Light Modes */

/* Default (dark) */
body::-webkit-scrollbar {
  width: 12px;
  background: var(--primary-color);
}
body::-webkit-scrollbar-thumb {
  background: #444;
  border-radius: 6px;
}
body::-webkit-scrollbar-thumb:hover {
  background: #666;
}

/* Firefox */
body {
  scrollbar-width: thin;
  scrollbar-color: #444 var(--primary-color);
}

/* Light mode override */
@media (prefers-color-scheme: light) {
  body::-webkit-scrollbar {
    background: var(--primary-color);
  }
  body::-webkit-scrollbar-thumb {
    background: #bbb;
  }
  body::-webkit-scrollbar-thumb:hover {
    background: #888;
  }
  body {
    scrollbar-color: #bbb var(--primary-color);
  }
}

.marketcap-button i {
    margin-right: 10px;
}

.interview-button {
    display: block;
    margin: 2rem auto 0 auto;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    background: transparent;
    border: 1px solid var(--secondary-color);
    color: var(--secondary-color);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    text-decoration: none;
    border-radius: 6px;
    box-shadow: none;
    max-width: 350px;
    width: 100%;
    text-align: center;
}

.interview-button:hover {
    border-color: var(--secondary-color);
    background: color-mix(in srgb, var(--secondary-color) 10%, transparent);
    color: var(--secondary-color);
    box-shadow: 0 0 10px var(--glow-color);
    transform: translateX(5px);
}

.interview-button i {
    margin-right: 10px;
}