/* ==========================================================================
  THEME VARIABLES (Synchronized with Main Portfolio)
==========================================================================
*/
:root {
    --color-tertiary: #ffffff;
    --color-text-main: #212121;
    --color-text-accent: #0d47a1; 
    --color-card-bg: rgba(255, 255, 255, 0.5);
    --color-card-border: rgba(0, 0, 0, 0.1);
    --bg-gradient: linear-gradient(to bottom, #ffffff 0%, #bbdefb 100%);
    --accent-glow: rgba(25, 118, 210, 0.2);
    
    --judo-accent: var(--color-text-accent);
    --judo-glow: var(--accent-glow);
    
    --font-heading: 'Lora', serif;
    --font-main: 'Inter', sans-serif;
}

body.theme-metallic-sky {
    --color-tertiary: #000000;
    --color-text-main: #ffffff;
    --color-text-accent: #00e5ff; 
    --judo-accent: #00e5ff;
    --bg-gradient: radial-gradient(circle at center, #02050a 0%, #000000 100%); 
    --accent-glow: rgba(0, 229, 255, 0.6); 
    --judo-glow: rgba(0, 229, 255, 0.3);
    --color-card-bg: rgba(0, 0, 0, 0.9);
    --color-card-border: rgba(0, 229, 255, 0.3);
}

/* ==========================================================================
  BASE LAYOUT
==========================================================================
*/
body {
    background: var(--bg-gradient);
    color: var(--color-text-main);
    font-family: var(--font-main);
    margin: 0;
    line-height: 1.6;
    transition: background 0.4s ease, color 0.4s ease;
    min-height: 100vh;
}

#judo-background-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1; 
    pointer-events: none; 
}

#judo-hero {
    min-height: 100vh;
    padding: 10vh 5vw;
    /* Original clean radial glow for PC and Light Theme */
    background: radial-gradient(circle at top right, var(--judo-glow), transparent 70%);
    display: flex;
    justify-content: center;
    position: relative;
    z-index: 1;
}


.judo-container {
    max-width: 1200px; 
    width: 100%;
    text-align: center;
}

/* ==========================================================================
  HEADER & TYPOGRAPHY
==========================================================================
*/
.judo-header h1 {
    font-family: var(--font-heading);
    font-size: 4rem;
    margin: 10px 0;
    color: var(--color-text-main); 
}

.judo-title-main {
    color: var(--judo-accent);
    text-shadow: 0 0 6px var(--judo-glow);
    transition: color 0.4s ease, text-shadow 0.4s ease;
}

body.theme-metallic-sky .judo-title-main {
    text-shadow: 0 0 8px var(--judo-accent), 0 0 4px rgba(0, 229, 255, 0.4);
}

.judo-badge {
    display: inline-block;
    padding: 5px 15px;
    border: 2px solid var(--judo-accent);
    color: var(--judo-accent);
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 700;
    background: rgba(0, 229, 255, 0.05);
}

.judo-subtitle {
    font-size: 1.2rem;
    color: var(--color-text-main);
    opacity: 1; 
    max-width: 700px;
    margin: 20px auto;
}

/* ==========================================================================
  ACTION BUTTONS
==========================================================================
*/
.judo-actions {
    margin-bottom: 40px;
}

.judo-btn {
    padding: 12px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 800;
    transition: all 0.3s ease;
    display: inline-block;
    margin: 0 10px;
}

.judo-btn.primary {
    background-color: var(--judo-accent);
    color: var(--color-tertiary); 
    box-shadow: 0 0 25px var(--judo-glow);
    border: none;
}

body.theme-metallic-sky .judo-btn.primary {
    color: #000000;
}

.judo-btn.secondary {
    border: 2px solid var(--color-text-main);
    color: var(--color-text-main);
    background: transparent;
}

.judo-btn:hover {
    transform: translateY(-5px);
    background-color: var(--color-text-main);
    color: var(--color-tertiary);
    box-shadow: 0 10px 40px var(--judo-glow);
}

/* ==========================================================================
  SMART BACK BUTTON (Centered Logic)
==========================================================================
*/
.action-buttons {
    display: none; /* Managed by Heartbeat JS */
    width: 100%;
    justify-content: center;
    align-items: center;
    margin-top: 60px;
    padding-bottom: 40px;
    animation: fadeInCenter 0.6s ease forwards;
}

.back-home-btn {
    color: var(--judo-accent);
    text-decoration: none;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s;
    display: inline-block;
    border-bottom: 2px solid transparent;
    cursor: pointer;
}

.back-home-btn:hover {
    text-shadow: 0 0 10px var(--judo-accent);
    border-bottom: 2px solid var(--judo-accent);
    transform: translateY(-2px);
}

@keyframes fadeInCenter {
    from {
        opacity: 0;
        transform: translateY(15px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==========================================================================
  FEATURE GRID
==========================================================================
*/
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 25px;
    margin: 80px auto;
    max-width: 100%; 
    justify-content: center;
}

.feature-box {
    padding: 35px;
    background: var(--color-card-bg);
    backdrop-filter: blur(15px);
    border: 1px solid var(--color-card-border); 
    border-radius: 24px;
    text-align: center; 
    transition: all 0.4s ease;
    display: flex;
    flex-direction: column;
    align-items: center; 
}

.feature-box:hover {
    border-color: var(--judo-accent);
    box-shadow: 0 0 40px var(--judo-glow);
    transform: scale(1.05) translateY(-10px);
}

.feature-box h3 {
    color: var(--judo-accent);
    margin-bottom: 15px;
    width: 100%;
    font-size: 1.5rem;
    text-shadow: 0 0 10px var(--judo-glow);
}

.feature-box p {
    font-size: 1rem;
    color: var(--color-text-main);
    opacity: 0.95;
    margin: 0;
    line-height: 1.6;
}

/* --- THEME SELECTOR UI (Identical to Main Portfolio) --- */
.theme-selector-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
}

.theme-toggle {
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-card-border);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    backdrop-filter: blur(5px);
    position: relative;
    z-index: 2;
    transition: transform 0.2s ease;
}

.theme-toggle:hover {
    transform: scale(1.1);
}

.theme-toggle svg {
    width: 24px;
    height: 24px;
    fill: var(--color-text-accent);
}

.theme-options {
    position: absolute;
    top: 60px;
    right: 0;
    width: 220px;
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-card-border);
    border-radius: 12px;
    padding: 0.5rem;
    backdrop-filter: blur(10px); /* The professional blur from your main page */
    opacity: 0;
    transform: translateY(-10px) scale(0.95); /* The "attractive" entry animation */
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
    z-index: 1;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.theme-options.visible {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
}

.theme-option-btn {
    background-color: transparent;
    border: none;
    color: var(--color-text-main);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    font-family: var(--font-family-main);
    font-size: 1rem;
    text-align: left;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    transition: background-color 0.2s ease;
}

.theme-option-btn:hover {
    background-color: rgba(0, 0, 0, 0.1);
}

body.theme-metallic-sky .theme-option-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* The color swatch logic that makes the main page look superior */
.theme-swatch {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 2px solid var(--color-card-border);
    flex-shrink: 0;
}

/* ==========================================================================
  MOBILE RESPONSIVENESS
==========================================================================
*/
@media (max-width: 768px) {
    #judo-hero {
        padding: 20px 20px 40px 20px;
    }

    /* Main heading and badge logic */
    .judo-header h1 {
        font-size: 1.8rem;
        display: flex;
        flex-direction: column; 
        align-items: center;
        line-height: 1.2;
    }

    .judo-title-sub {
        font-size: 1.3rem;
    }

    .judo-subtitle {
        font-size: 0.9rem;
        margin: 12px auto;
        padding: 0 15px;
    }

    .judo-badge {
        font-size: 0.55rem;
        padding: 2px 8px;
        border-width: 1px;
    }

    

    body.theme-metallic-sky #judo-hero {
        background: 
            linear-gradient(to right, rgba(0, 0, 0, 0.7) 0%, transparent 60%),
            radial-gradient(circle at top right, var(--judo-glow), transparent 70%);
    }

    /* Theme toggle logic */
   .theme-toggle {
        width: 35px;
        height: 35px;
    }

    .theme-toggle svg {
        width: 16px;
        height: 16px;
    }

    .theme-options {
        top: 45px;
        width: 170px;
    }

    /* Button and Actions logic */
    .judo-actions {
        display: flex;
        flex-direction: column;
        gap: 12px;
        align-items: center;
    }

    .judo-btn {
        width: auto; 
        min-width: 180px; 
        max-width: 220px; 
        padding: 10px 14px; 
        font-size: 0.95rem; 
        border-radius: 50px; 
        margin: 0;
    }

    /* Feature Grid and Square Cards logic */
    .feature-grid {
        margin: 30px auto;
        gap: 20px;
        width: 100%; 
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .feature-box {
        width: 85%; 
        max-width: 300px;
        min-height: 160px; 
        display: flex;
        flex-direction: column;
        justify-content: center; 
        align-items: center;
        padding: 12px 20px; 
        border-radius: 20px; 
        box-sizing: border-box; 
    }

    .feature-box h3 {
        font-size: 1.1rem;
        margin-top: 0;
        margin-bottom: 5px;
        text-align: center;
    }

    .feature-box p {
        font-size: 0.85rem;
        line-height: 1.3;
        text-align: center;
        margin-bottom: 0;
    }

    /* Final section: Under the Hood adjustments */
    .judo-tech-stack .section-title {
        font-size: 1.45rem; /* Slightly reduced from 1.6rem as requested */
        margin-bottom: 12px;
    }

    .judo-tech-stack .bio-text {
        font-size: 0.85rem; /* Matches the compact feel of other descriptions */
        line-height: 1.4;
        padding: 0 15px;
        margin-bottom: 15px;
    }

    .back-home-btn {
        font-size: 0.7rem; /* Reduced for better scale */
        letter-spacing: 0.5px;
    }

    .judo-tech-stack .action-buttons {
        margin-top: 25px;
        padding-bottom: 25px;
    }
}


/* --- TABLET LAYOUT (Portrait & Landscape) --- */
@media (min-width: 769px) and (max-width: 1024px) {
    
    /* 1. Scale the Heading and Description */
    .judo-header h1 {
        font-size: 3.2rem; /* Halfway between mobile and desktop */
        line-height: 1.1;
    }

    .judo-title-sub {
        font-size: 2.2rem;
        display: block; /* Keeps the split look */
    }

    .judo-subtitle {
        font-size: 1.1rem;
        max-width: 80%; /* Wider than mobile, tighter than desktop */
        margin: 20px auto;
    }

    /* 2. Put Buttons in a Single Line */
    .judo-actions {
        display: flex;
        flex-direction: row; /* Horizontal alignment */
        justify-content: center;
        gap: 20px;
    }

    .judo-btn {
        width: auto;
        min-width: 200px;
        padding: 12px 25px;
    }

    /* 3. Set Feature Cards to 2 per line */
    .feature-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr); /* Exactly 2 columns */
        gap: 25px;
        width: 90%;
        margin: 50px auto;
    }

    .feature-box {
        aspect-ratio: 1 / 1; /* Keeping your preferred square look */
        padding: 25px;
    }

    /* 4. Under the Hood Section */
    .judo-tech-stack .section-title {
        font-size: 2rem;
    }

    .judo-tech-stack .bio-text {
        font-size: 1rem;
        max-width: 85%;
    }
}