/* WW2 Enigma Machine - Vintage Styling */

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

:root {
    --rust-dark: #3d2817;
    --rust-medium: #5c3d2e;
    --rust-light: #8b6f47;
    --brass-dark: #6b5d3f;
    --brass-medium: #8b7d5a;
    --brass-light: #b8a57d;
    --metal-dark: #2c2c2c;
    --metal-medium: #4a4a4a;
    --patina-green: #4a6b4f;
    --paper-yellow: #f4e8c1;
    --ink-black: #1a1a1a;
    --lamp-glow: #ffdb58;
}

body {
    font-family: 'Courier Prime', 'Courier New', monospace;
    background: linear-gradient(135deg, #1a1410 0%, #2d2419 50%, #1a1410 100%);
    color: var(--paper-yellow);
    min-height: 100vh;
    padding: 1rem;
    position: relative;
    overflow-x: hidden;
}

/* Vintage paper texture overlay */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0,0,0,.05) 2px, rgba(0,0,0,.05) 4px),
        repeating-linear-gradient(90deg, transparent, transparent 2px, rgba(0,0,0,.05) 2px, rgba(0,0,0,.05) 4px);
    pointer-events: none;
    opacity: 0.3;
    z-index: 1;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.machine-body {
    background: linear-gradient(145deg, #3a3028 0%, #2d2419 50%, #3a3028 100%);
    border: 8px solid var(--brass-dark);
    border-radius: 12px;
    box-shadow:
        0 20px 60px rgba(0, 0, 0, 0.8),
        inset 0 1px 0 rgba(255, 255, 255, 0.1),
        inset 0 -2px 8px rgba(0, 0, 0, 0.5);
    position: relative;
}

/* Scratches and wear */
.machine-body::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(45deg, transparent 48%, rgba(255,255,255,0.02) 49%, rgba(255,255,255,0.02) 51%, transparent 52%),
        linear-gradient(-45deg, transparent 48%, rgba(0,0,0,0.1) 49%, rgba(0,0,0,0.1) 51%, transparent 52%);
    background-size: 3px 3px, 5px 5px;
    pointer-events: none;
    border-radius: 4px;
    opacity: 0.4;
}

/* Header Plate */
header {
    background: linear-gradient(180deg, var(--brass-medium) 0%, var(--brass-dark) 100%);
    padding: 1.5rem;
    text-align: center;
    border-bottom: 4px solid var(--rust-dark);
    box-shadow: inset 0 2px 10px rgba(0, 0, 0, 0.5);
    position: relative;
}

.header-plate {
    border: 2px solid var(--brass-dark);
    padding: 1rem;
    background: linear-gradient(135deg, rgba(139, 125, 90, 0.3), rgba(107, 93, 63, 0.3));
    box-shadow:
        inset 0 0 20px rgba(0, 0, 0, 0.3),
        0 2px 4px rgba(0, 0, 0, 0.5);
}

header h1 {
    font-family: 'Special Elite', 'Courier Prime', monospace;
    font-size: 2.5rem;
    color: var(--ink-black);
    text-shadow:
        1px 1px 0 rgba(255, 255, 255, 0.2),
        2px 2px 4px rgba(0, 0, 0, 0.5);
    letter-spacing: 0.3em;
    margin-bottom: 0.3rem;
}

.serial-number {
    font-size: 0.8rem;
    color: var(--rust-dark);
    letter-spacing: 0.2em;
    font-weight: bold;
}

.subtitle {
    font-size: 0.75rem;
    color: var(--rust-medium);
    letter-spacing: 0.15em;
    margin-top: 0.5rem;
    text-transform: uppercase;
}

/* Main Content */
main {
    padding: 1.5rem;
}

section {
    margin-bottom: 2rem;
    background: linear-gradient(145deg, rgba(93, 61, 46, 0.2), rgba(61, 40, 23, 0.2));
    border: 3px solid var(--brass-dark);
    border-radius: 6px;
    padding: 1.5rem;
    box-shadow:
        0 4px 15px rgba(0, 0, 0, 0.5),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.section-label {
    background: var(--brass-dark);
    padding: 0.5rem 1rem;
    margin: -1.5rem -1.5rem 1rem -1.5rem;
    border-bottom: 2px solid var(--rust-dark);
    text-align: center;
    box-shadow: inset 0 -2px 5px rgba(0, 0, 0, 0.3);
}

.section-label span {
    font-family: 'Special Elite', monospace;
    font-size: 0.9rem;
    letter-spacing: 0.2em;
    color: var(--paper-yellow);
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

.instruction-plate {
    background: var(--paper-yellow);
    border: 2px solid var(--brass-dark);
    padding: 0.75rem;
    margin-bottom: 1.5rem;
    text-align: center;
    box-shadow:
        inset 0 0 10px rgba(139, 111, 71, 0.3),
        0 2px 5px rgba(0, 0, 0, 0.3);
    position: relative;
}

.instruction-plate::before {
    content: '';
    position: absolute;
    top: 5px;
    left: 5px;
    right: 5px;
    bottom: 5px;
    border: 1px solid rgba(139, 111, 71, 0.3);
    pointer-events: none;
}

.instruction-plate p {
    color: var(--ink-black);
    font-size: 0.85rem;
    letter-spacing: 0.05em;
    font-weight: bold;
}

/* Rotor Assembly */
.rotor-settings {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-bottom: 1rem;
}

.rotor-assembly {
    background: linear-gradient(180deg, var(--metal-dark) 0%, var(--metal-medium) 50%, var(--metal-dark) 100%);
    border: 3px solid var(--brass-dark);
    border-radius: 8px;
    padding: 1rem;
    box-shadow:
        0 4px 10px rgba(0, 0, 0, 0.6),
        inset 0 2px 4px rgba(0, 0, 0, 0.4);
    position: relative;
}

/* Rust effect on rotors */
.rotor-assembly::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 30%, rgba(139, 69, 19, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(139, 69, 19, 0.2) 0%, transparent 40%),
        radial-gradient(circle at 50% 50%, rgba(74, 107, 79, 0.1) 0%, transparent 60%);
    pointer-events: none;
    border-radius: 5px;
}

.rotor-label {
    font-family: 'Special Elite', monospace;
    font-size: 0.7rem;
    color: var(--brass-light);
    text-align: center;
    letter-spacing: 0.15em;
    margin-bottom: 0.5rem;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.8);
}

.rotor-window {
    background: linear-gradient(180deg, #1a1a1a 0%, #2a2a2a 100%);
    border: 3px solid var(--brass-medium);
    border-radius: 4px;
    padding: 0.5rem;
    text-align: center;
    box-shadow:
        inset 0 3px 8px rgba(0, 0, 0, 0.8),
        0 1px 0 rgba(255, 255, 255, 0.1);
}

.rotor-window input {
    width: 100%;
    background: rgba(244, 232, 193, 0.9);
    border: 2px solid var(--rust-dark);
    color: var(--ink-black);
    font-family: 'Special Elite', monospace;
    font-size: 1.5rem;
    font-weight: bold;
    text-align: center;
    padding: 0.5rem;
    border-radius: 3px;
    box-shadow: inset 0 2px 5px rgba(0, 0, 0, 0.3);
    letter-spacing: 0.1em;
}

.rotor-window input:focus {
    outline: none;
    background: var(--paper-yellow);
    box-shadow:
        inset 0 2px 5px rgba(0, 0, 0, 0.3),
        0 0 10px rgba(255, 219, 88, 0.5);
}

.rotor-controls {
    display: flex;
    gap: 0.25rem;
    margin-top: 0.5rem;
}

.rotor-btn {
    flex: 1;
    background: linear-gradient(180deg, var(--brass-light) 0%, var(--brass-dark) 100%);
    border: 2px solid var(--rust-dark);
    color: var(--ink-black);
    font-size: 1rem;
    font-weight: bold;
    padding: 0.4rem;
    cursor: pointer;
    border-radius: 3px;
    box-shadow:
        0 2px 4px rgba(0, 0, 0, 0.5),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
    transition: all 0.1s ease;
}

.rotor-btn:active {
    transform: translateY(2px);
    box-shadow:
        0 1px 2px rgba(0, 0, 0, 0.5),
        inset 0 2px 4px rgba(0, 0, 0, 0.3);
}

.rotor-btn:hover {
    background: linear-gradient(180deg, var(--brass-medium) 0%, var(--brass-dark) 100%);
}

/* Lampboard Display */
.lampboard {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.lamp-panel {
    background: linear-gradient(180deg, #1a1a1a 0%, #0d0d0d 100%);
    border: 4px solid var(--brass-dark);
    border-radius: 6px;
    padding: 1rem;
    box-shadow:
        inset 0 4px 12px rgba(0, 0, 0, 0.8),
        0 2px 8px rgba(0, 0, 0, 0.5);
    position: relative;
}

/* Glass effect */
.lamp-panel::after {
    content: '';
    position: absolute;
    top: 8px;
    left: 8px;
    right: 8px;
    bottom: 8px;
    background: linear-gradient(135deg, rgba(255,255,255,0.05) 0%, transparent 50%);
    pointer-events: none;
    border-radius: 3px;
}

.lamp-label {
    font-family: 'Special Elite', monospace;
    font-size: 0.7rem;
    color: var(--brass-light);
    text-align: center;
    letter-spacing: 0.2em;
    margin-bottom: 0.5rem;
    text-shadow: 0 0 5px rgba(255, 219, 88, 0.3);
}

.lamp-display {
    min-height: 3rem;
    background: rgba(0, 0, 0, 0.8);
    border: 2px solid var(--metal-medium);
    border-radius: 4px;
    padding: 0.75rem;
    font-family: 'Special Elite', monospace;
    font-size: 1.2rem;
    color: var(--lamp-glow);
    text-align: center;
    letter-spacing: 0.3em;
    word-wrap: break-word;
    text-shadow:
        0 0 10px rgba(255, 219, 88, 0.8),
        0 0 20px rgba(255, 219, 88, 0.4);
    box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.9);
}

/* Keyboard Section - Mobile Optimized */
.keyboard-section {
    background: linear-gradient(145deg, var(--metal-dark) 0%, var(--metal-medium) 100%);
    border: 4px solid var(--brass-dark);
    border-radius: 8px;
    padding: 0.75rem 0.5rem; /* Reduced horizontal padding for more key space */
    margin-bottom: 1rem;
    box-shadow:
        0 6px 20px rgba(0, 0, 0, 0.6),
        inset 0 -2px 8px rgba(0, 0, 0, 0.4);
}

.keyboard {
    width: 100%;
    margin: 0 auto;
    max-width: 100%; /* Ensure it uses full width */
}

.keyboard-row {
    display: flex;
    justify-content: center;
    gap: 1.5vw; /* Responsive gap based on screen width */
    margin-bottom: 0.8rem;
    width: 100%;
}

.key {
    /* Flexible width calculation to fill row */
    flex: 1;
    /* Base min-width ensures they don't get unclickable */
    min-width: 32px;
    /* Max width prevents them from looking huge on tablets before the breakpoint */
    max-width: 45px;
    height: auto;
    /* Force aspect ratio to keep them circular */
    aspect-ratio: 1 / 1;

    background: linear-gradient(180deg, #e8dcc0 0%, #c9b896 50%, #a69775 100%);
    border: 2px solid var(--rust-dark); /* Slightly thinner border for mobile */
    border-radius: 50%;

    /* Typography */
    font-family: 'Special Elite', monospace;
    font-size: 1rem;
    font-weight: bold;
    color: var(--ink-black);

    /* Interaction */
    cursor: pointer;
    touch-action: manipulation; /* Improves touch response */
    -webkit-tap-highlight-color: transparent; /* Removes blue highlight on mobile */

    /* 3D styling */
    box-shadow:
        0 3px 0 #5c3d2e, /* Solid shadow for 3D depth */
        0 5px 5px rgba(0,0,0,0.4),
        inset 0 1px 1px rgba(255,255,255,0.5);

    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    margin: 0;
    position: relative;
    transition: transform 0.05s ease, box-shadow 0.05s ease;
}

/* Worn key effect overlay */
.key::after {
    content: '';
    position: absolute;
    top: 5%;
    left: 5%;
    width: 90%;
    height: 90%;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.4) 0%, transparent 60%);
    pointer-events: none;
}

/* Active State - The "Press" Animation */
.key:active {
    transform: translateY(3px); /* Move down */
    box-shadow:
        0 0 0 #5c3d2e, /* Remove 3D depth shadow */
        inset 0 2px 5px rgba(0,0,0,0.3); /* Inner shadow for pressed look */
    background: linear-gradient(180deg, #d4c4a0 0%, #b8a57d 100%);
}

/* Space Bar Special Styling */
.key-space {
    max-width: none; /* Allow space bar to stretch */
    flex: 0 1 50%; /* Target 50% width of row */
    aspect-ratio: auto; /* Remove 1:1 ratio */
    height: 45px; /* Fixed height for consistency */
    border-radius: 12px; /* Pill shape */
    font-size: 0.9rem;
    letter-spacing: 0.1em;
}

.key-space::after {
    border-radius: 12px; /* Match pill shape */
}

/* Disabled State */
.key:disabled {
    opacity: 0.6;
    filter: grayscale(0.5);
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

.rotor-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

input:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

/* Control Panel */
.control-panel {
    display: block;
    margin-bottom: 1rem;
}

.control-btn {
    background: linear-gradient(180deg, var(--metal-medium) 0%, var(--metal-dark) 100%);
    border: 3px solid var(--brass-dark);
    color: var(--brass-light);
    font-family: 'Special Elite', monospace;
    font-size: 0.8rem;
    font-weight: bold;
    padding: 0.75rem;
    cursor: pointer;
    border-radius: 4px;
    letter-spacing: 0.1em;
    box-shadow:
        0 3px 8px rgba(0, 0, 0, 0.6),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    transition: all 0.1s ease;
}

.control-btn:active {
    transform: translateY(2px);
    box-shadow:
        0 1px 3px rgba(0, 0, 0, 0.6),
        inset 0 2px 6px rgba(0, 0, 0, 0.5);
}

.validate-btn {
    grid-column: 1 / -1;
    background: linear-gradient(180deg, var(--patina-green) 0%, #3a5a3f 100%);
    border: 4px solid var(--brass-dark);
    color: var(--paper-yellow);
    font-family: 'Special Elite', monospace;
    font-size: 1rem;
    font-weight: bold;
    padding: 1rem;
    cursor: pointer;
    border-radius: 6px;
    letter-spacing: 0.15em;
    box-shadow:
        0 4px 12px rgba(0, 0, 0, 0.7),
        inset 0 2px 0 rgba(255, 255, 255, 0.1);
    transition: all 0.2s ease;
}

.validate-btn:hover {
    background: linear-gradient(180deg, #5a8b5f 0%, var(--patina-green) 100%);
    box-shadow:
        0 6px 16px rgba(0, 0, 0, 0.8),
        inset 0 2px 0 rgba(255, 255, 255, 0.2),
        0 0 20px rgba(74, 107, 79, 0.4);
}

.validate-btn:active {
    transform: translateY(3px);
    box-shadow:
        0 2px 6px rgba(0, 0, 0, 0.8),
        inset 0 3px 8px rgba(0, 0, 0, 0.5);
}

/* Status Messages */
.status-message {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 4px;
    font-weight: bold;
    text-align: center;
    display: none;
    border: 2px solid;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
}

.status-message.success {
    display: block;
    background: rgba(74, 107, 79, 0.3);
    color: #a8d5a8;
    border-color: var(--patina-green);
    text-shadow: 0 0 10px rgba(168, 213, 168, 0.5);
}

.status-message.error {
    display: block;
    background: rgba(139, 69, 19, 0.3);
    color: #ff9966;
    border-color: var(--rust-medium);
    text-shadow: 0 0 10px rgba(255, 153, 102, 0.5);
}

.status-message.info {
    display: block;
    background: rgba(139, 125, 90, 0.3);
    color: var(--paper-yellow);
    border-color: var(--brass-medium);
    text-shadow: 0 0 10px rgba(244, 232, 193, 0.5);
}

/* Success Section */
.success-section {
    display: none;
}

.success-section.active {
    display: block;
}

/* Email Form */
.email-form-container {
    margin-top: 2rem;
}

.submission-form {
    max-width: 500px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-family: 'Special Elite', monospace;
    font-size: 0.9rem;
    color: var(--brass-light);
    margin-bottom: 0.5rem;
    letter-spacing: 0.1em;
}

.form-group input[type="email"] {
    width: 100%;
    background: rgba(244, 232, 193, 0.9);
    border: 3px solid var(--brass-dark);
    color: var(--ink-black);
    font-family: 'Courier Prime', monospace;
    font-size: 1.1rem;
    padding: 0.75rem;
    border-radius: 4px;
    box-shadow: inset 0 2px 5px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
}

.form-group input[type="email"]:focus {
    outline: none;
    background: var(--paper-yellow);
    border-color: var(--brass-light);
    box-shadow:
        inset 0 2px 5px rgba(0, 0, 0, 0.3),
        0 0 15px rgba(255, 219, 88, 0.5);
}

.form-group input[type="email"]::placeholder {
    color: rgba(26, 26, 26, 0.4);
}

/* Explanation Box */
.explanation-box {
    background: rgba(0, 0, 0, 0.3);
    border: 3px solid var(--brass-light);
    border-radius: 6px;
    padding: 1.5rem;
    margin: 1.5rem 0;
}

.explanation-box h3 {
    font-family: 'Special Elite', monospace;
    font-size: 1.3rem;
    color: var(--lamp-glow);
    margin-bottom: 1rem;
    letter-spacing: 0.15em;
    text-shadow: 0 0 10px rgba(255, 219, 88, 0.6);
}

.explanation-text {
    font-size: 1rem;
    color: var(--paper-yellow);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.explanation-text strong {
    color: var(--lamp-glow);
    text-shadow: 0 0 8px rgba(255, 219, 88, 0.4);
}

.success-plate {
    background: linear-gradient(145deg, var(--patina-green) 0%, #3a5a3f 100%);
    border: 4px solid var(--brass-light);
    padding: 2rem;
    text-align: center;
    border-radius: 8px;
    box-shadow:
        0 6px 20px rgba(0, 0, 0, 0.8),
        inset 0 2px 10px rgba(0, 0, 0, 0.3);
}

.success-plate h2 {
    font-family: 'Special Elite', monospace;
    font-size: 2rem;
    color: var(--paper-yellow);
    letter-spacing: 0.3em;
    margin-bottom: 1rem;
    text-shadow:
        0 0 20px rgba(255, 219, 88, 0.8),
        2px 2px 4px rgba(0, 0, 0, 0.8);
}

.success-message {
    font-size: 1rem;
    color: var(--brass-light);
    margin: 1rem 0;
}

.decoded-message {
    background: rgba(0, 0, 0, 0.5);
    border: 3px solid var(--brass-light);
    border-radius: 6px;
    padding: 1.5rem;
    margin: 1.5rem 0;
    font-family: 'Special Elite', monospace;
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--lamp-glow);
    letter-spacing: 0.3em;
    text-shadow:
        0 0 15px rgba(255, 219, 88, 0.9),
        0 0 30px rgba(255, 219, 88, 0.5);
    box-shadow: inset 0 2px 12px rgba(0, 0, 0, 0.8);
}

.next-steps {
    font-family: 'Special Elite', monospace;
    font-size: 1.1rem;
    color: var(--paper-yellow);
    margin-top: 1rem;
    letter-spacing: 0.2em;
    text-shadow: 0 0 10px rgba(244, 232, 193, 0.5);
}

/* Footer */
footer {
    border-top: 4px solid var(--brass-dark);
    margin-top: 1rem;
}

.footer-plate {
    background: linear-gradient(180deg, var(--brass-dark) 0%, var(--rust-dark) 100%);
    text-align: center;
    padding: 1rem;
    box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.5);
}

.footer-plate p {
    font-family: 'Special Elite', monospace;
    font-size: 0.7rem;
    color: var(--brass-light);
    letter-spacing: 0.2em;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.8);
}

/* Media Queries for Larger Screens */
@media (min-width: 400px) {
    .key {
        max-width: 50px;
        font-size: 1.1rem;
    }
    .key-space {
        height: 50px;
    }
}

/* Tablet and Desktop */
@media (min-width: 768px) {
    body {
        padding: 2rem;
    }

    header h1 {
        font-size: 3.5rem;
    }

    .subtitle {
        font-size: 0.9rem;
    }

    main {
        padding: 2.5rem;
    }

    .rotor-settings {
        grid-template-columns: repeat(4, 1fr);
        gap: 1.5rem;
    }

    .lampboard {
        grid-template-columns: 1fr 1fr;
    }

    .keyboard-section {
        padding: 1.5rem;
    }

    .keyboard-row {
        gap: 0.8rem;
    }

    .key {
        max-width: 65px;
        font-size: 1.25rem;
        border-width: 3px;
        box-shadow:
            0 5px 0 #5c3d2e, /* Deeper shadow on desktop */
            0 8px 10px rgba(0,0,0,0.4),
            inset 0 1px 1px rgba(255,255,255,0.5);
    }

    .key:active {
        transform: translateY(5px);
    }

    .key-space {
        height: 65px;
    }

    .control-panel {
        max-width: 800px;
        margin: 0 auto 1rem;
    }

    .lamp-display {
        font-size: 1.5rem;
        min-height: 4rem;
    }

    .rotor-window input {
        font-size: 2rem;
    }
}

@media (min-width: 1024px) {
    .lamp-display {
        font-size: 1.8rem;
    }
}

/* Animations */
@keyframes flicker {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.95; }
}

.lamp-display {
    animation: flicker 3s infinite;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.success-section.active {
    animation: fadeIn 0.8s ease;
}