/* Maze Runner - Animated maze with moving dot
   Showcases: CSS Grid, animations, keyframes path, gradients */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-dark: #0a0a0f;
    --bg-gradient: #12121a;
    --wall-color: #2a2a3a;
    --wall-glow: #3d3d5c;
    --path-color: #0a0a12;
    --runner-color: #00ff88;
    --runner-glow: rgba(0, 255, 136, 0.5);
    --start-color: #00aaff;
    --end-color: #ff4488;
    --text-primary: #e0e0e8;
    --text-secondary: #8888aa;
}

html, body {
    height: 100%;
}

body {
    font-family: 'Courier New', Courier, monospace;
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-gradient) 100%);
    color: var(--text-primary);
    line-height: 1.8;
    min-height: 100vh;
}

.scene {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem 1rem;
}

/* Maze container */
.maze-container {
    position: relative;
    margin: 2rem 0;
}

/* Maze grid - 11x11 */
.maze {
    display: grid;
    grid-template-columns: repeat(11, minmax(20px, 35px));
    grid-template-rows: repeat(11, minmax(20px, 35px));
    gap: 2px;
    background: var(--wall-glow);
    padding: 2px;
    border-radius: 4px;
    box-shadow:
        0 0 30px rgba(61, 61, 92, 0.5),
        inset 0 0 20px rgba(0, 0, 0, 0.5);
}

.cell {
    width: 100%;
    height: 100%;
    transition: background-color 0.3s;
}

.wall {
    background: linear-gradient(135deg, var(--wall-color) 0%, #1a1a28 100%);
    box-shadow: inset 1px 1px 2px rgba(255,255,255,0.05);
}

.path {
    background: var(--path-color);
}

.start {
    background: radial-gradient(circle, var(--start-color) 30%, var(--path-color) 70%);
    animation: pulse-start 2s ease-in-out infinite;
}

.end {
    background: radial-gradient(circle, var(--end-color) 30%, var(--path-color) 70%);
    animation: pulse-end 2s ease-in-out infinite;
}

@keyframes pulse-start {
    0%, 100% { box-shadow: inset 0 0 10px var(--start-color); }
    50% { box-shadow: inset 0 0 20px var(--start-color); }
}

@keyframes pulse-end {
    0%, 100% { box-shadow: inset 0 0 10px var(--end-color); }
    50% { box-shadow: inset 0 0 20px var(--end-color); }
}

/* The runner - animated dot */
.runner {
    position: absolute;
    width: 16px;
    height: 16px;
    background: var(--runner-color);
    border-radius: 50%;
    box-shadow:
        0 0 10px var(--runner-glow),
        0 0 20px var(--runner-glow),
        0 0 30px var(--runner-glow);
    z-index: 10;
    animation: run-maze 12s ease-in-out infinite;
}

/* Trail effect */
.trail {
    position: absolute;
    width: 12px;
    height: 12px;
    background: var(--runner-color);
    border-radius: 50%;
    opacity: 0.4;
    z-index: 5;
    animation: run-maze 12s ease-in-out infinite;
    animation-delay: -0.15s;
    filter: blur(3px);
}

/* Maze path animation
   Grid positions: each cell ~37px (35px + 2px gap)
   Starting at row 2, col 2 (index 1,1) going to row 10, col 10 (index 9,9)
*/
@keyframes run-maze {
    0% {
        top: calc(1 * 37px + 12px);
        left: calc(1 * 37px + 12px);
    }
    /* Move right to col 3 */
    5% {
        top: calc(1 * 37px + 12px);
        left: calc(3 * 37px + 12px);
    }
    /* Move down to row 4 */
    12% {
        top: calc(3 * 37px + 12px);
        left: calc(3 * 37px + 12px);
    }
    /* Move left to col 2 */
    16% {
        top: calc(3 * 37px + 12px);
        left: calc(1 * 37px + 12px);
    }
    /* Move down to row 6 */
    22% {
        top: calc(5 * 37px + 12px);
        left: calc(1 * 37px + 12px);
    }
    /* Move right to col 6 */
    32% {
        top: calc(5 * 37px + 12px);
        left: calc(5 * 37px + 12px);
    }
    /* Move up to row 4 */
    36% {
        top: calc(3 * 37px + 12px);
        left: calc(5 * 37px + 12px);
    }
    /* Move right to col 8 */
    42% {
        top: calc(3 * 37px + 12px);
        left: calc(7 * 37px + 12px);
    }
    /* Move down to row 8 */
    52% {
        top: calc(7 * 37px + 12px);
        left: calc(7 * 37px + 12px);
    }
    /* Move left to col 6 */
    56% {
        top: calc(7 * 37px + 12px);
        left: calc(5 * 37px + 12px);
    }
    /* Move down to row 9 */
    60% {
        top: calc(8 * 37px + 12px);
        left: calc(5 * 37px + 12px);
    }
    /* Move right to col 10 */
    75% {
        top: calc(8 * 37px + 12px);
        left: calc(9 * 37px + 12px);
    }
    /* Move up to row 6 */
    82% {
        top: calc(5 * 37px + 12px);
        left: calc(9 * 37px + 12px);
    }
    /* Move down to row 10 - end */
    92% {
        top: calc(9 * 37px + 12px);
        left: calc(9 * 37px + 12px);
    }
    /* Stay at end briefly */
    100% {
        top: calc(9 * 37px + 12px);
        left: calc(9 * 37px + 12px);
    }
}

/* Content */
.content {
    max-width: 600px;
    text-align: center;
    padding: 2rem;
}

.header {
    margin-bottom: 2rem;
}

h1 {
    font-size: clamp(1.8rem, 6vw, 3rem);
    font-weight: 400;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--runner-color);
    text-shadow:
        0 0 10px var(--runner-glow),
        0 0 20px var(--runner-glow);
    margin-bottom: 0.5rem;
}

.tagline {
    font-size: clamp(0.85rem, 2.5vw, 1rem);
    color: var(--text-secondary);
    letter-spacing: 0.1em;
}

.text {
    margin-bottom: 2rem;
}

.intro {
    font-size: clamp(1rem, 2.5vw, 1.15rem);
    margin-bottom: 1.5rem;
    line-height: 2;
}

blockquote {
    font-style: italic;
    padding: 1.5rem;
    margin: 1.5rem 0;
    border-left: 3px solid var(--runner-color);
    background: rgba(0, 255, 136, 0.05);
    text-align: left;
    font-size: clamp(0.9rem, 2vw, 1rem);
}

.text p {
    margin-bottom: 1rem;
    font-size: clamp(0.9rem, 2vw, 1rem);
    text-align: justify;
}

.footer {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-style: italic;
    letter-spacing: 0.05em;
}

/* Responsive */
@media (max-width: 500px) {
    .maze {
        grid-template-columns: repeat(11, 25px);
        grid-template-rows: repeat(11, 25px);
    }

    @keyframes run-maze {
        0% {
            top: calc(1 * 27px + 8px);
            left: calc(1 * 27px + 8px);
        }
        5% {
            top: calc(1 * 27px + 8px);
            left: calc(3 * 27px + 8px);
        }
        12% {
            top: calc(3 * 27px + 8px);
            left: calc(3 * 27px + 8px);
        }
        16% {
            top: calc(3 * 27px + 8px);
            left: calc(1 * 27px + 8px);
        }
        22% {
            top: calc(5 * 27px + 8px);
            left: calc(1 * 27px + 8px);
        }
        32% {
            top: calc(5 * 27px + 8px);
            left: calc(5 * 27px + 8px);
        }
        36% {
            top: calc(3 * 27px + 8px);
            left: calc(5 * 27px + 8px);
        }
        42% {
            top: calc(3 * 27px + 8px);
            left: calc(7 * 27px + 8px);
        }
        52% {
            top: calc(7 * 27px + 8px);
            left: calc(7 * 27px + 8px);
        }
        56% {
            top: calc(7 * 27px + 8px);
            left: calc(5 * 27px + 8px);
        }
        60% {
            top: calc(8 * 27px + 8px);
            left: calc(5 * 27px + 8px);
        }
        75% {
            top: calc(8 * 27px + 8px);
            left: calc(9 * 27px + 8px);
        }
        82% {
            top: calc(5 * 27px + 8px);
            left: calc(9 * 27px + 8px);
        }
        92%, 100% {
            top: calc(9 * 27px + 8px);
            left: calc(9 * 27px + 8px);
        }
    }

    .runner {
        width: 12px;
        height: 12px;
    }

    .trail {
        width: 8px;
        height: 8px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .runner, .trail {
        animation: none;
        top: calc(5 * 37px + 12px);
        left: calc(5 * 37px + 12px);
    }

    .trail {
        display: none;
    }

    .start, .end {
        animation: none;
    }
}