:root {
    --bg-dark: #050907;
    /* Very deep tech green/black */
    --tech-green: #2dd46c;
    /* Brighter, glowing version of Bōtara Green */
    --tech-green-dim: rgba(45, 212, 108, 0.2);
    --text-main: #ffffff;
    --text-muted: #889990;
    --panel-bg: rgba(10, 20, 15, 0.6);
    --panel-border: rgba(45, 212, 108, 0.15);
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: 'Inter', sans-serif;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-x: hidden;
    /* Allow vertical scrolling, prevent horizontal grid overflow */
    overflow-y: auto;
    position: relative;
    letter-spacing: -0.01em;
}

/* --- Animated Backgrounds --- */
.tech-grid {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background-image:
        linear-gradient(var(--panel-border) 1px, transparent 1px),
        linear-gradient(90deg, var(--panel-border) 1px, transparent 1px);
    background-size: 40px 40px;
    z-index: 0;
    transform: perspective(500px) rotateX(60deg) translateY(0);
    animation: gridMove 20s linear infinite;
    opacity: 0.3;
}

.ambient-glow {
    position: absolute;
    width: 80vw;
    height: 80vh;
    background: radial-gradient(circle at center, var(--tech-green-dim) 0%, transparent 60%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1;
    filter: blur(100px);
    opacity: 0.5;
    animation: pulse 8s ease-in-out infinite alternate;
}

/* --- Layout --- */
.container {
    position: relative;
    z-index: 10;
    width: 100%;
    max-width: 900px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    min-height: 90vh;
    justify-content: space-between;
}

/* --- Typography & Elements --- */
.system-status {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    color: var(--tech-green);
    display: flex;
    align-items: center;
    gap: 8px;
    text-shadow: 0 0 5px var(--tech-green-dim);
}

.blinking-dot {
    width: 8px;
    height: 8px;
    background-color: var(--tech-green);
    border-radius: 50%;
    animation: blink 1s step-end infinite;
    box-shadow: 0 0 8px var(--tech-green);
}

.header {
    margin-top: 2rem;
    margin-bottom: 3rem;
    display: flex;
    justify-content: center;
}

.logo {
    max-width: 420px;
    filter: drop-shadow(0 0 20px rgba(45, 212, 108, 0.2));
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.title {
    font-size: 5.5rem;
    font-weight: 800;
    line-height: 1.05;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: -0.04em;
}

.text-highlight {
    background: linear-gradient(90deg, #fff 0%, var(--text-muted) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: block;
}

.subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
    max-width: 600px;
    line-height: 1.6;
    margin-bottom: 3rem;
    font-weight: 300;
}

/* --- Tech Form Segment --- */
.form-container {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    backdrop-filter: blur(12px);
    padding: 2rem;
    border-radius: 12px;
    position: relative;
    /* Removed overflow: hidden so tooltip can overflow */
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5), inset 0 0 0 1px rgba(255, 255, 255, 0.05);
}

/* Corner brackets for tech feel */
.form-container::before,
.form-container::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2px solid var(--tech-green);
    opacity: 0.5;
}

.form-container::before {
    top: 0;
    left: 0;
    border-right: none;
    border-bottom: none;
}

.form-container::after {
    bottom: 0;
    right: 0;
    border-left: none;
    border-top: none;
}

.form-header {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.terminal-prompt {
    color: var(--tech-green);
    font-weight: bold;
}

.newsletter-form {
    display: flex;
    gap: 1rem;
    position: relative;
}

.input-wrapper {
    flex: 1;
    position: relative;
    overflow: hidden;
    border: 1px solid var(--panel-border);
    border-radius: 4px;
    background: rgba(0, 0, 0, 0.3);
}

.email-input {
    width: 100%;
    background: transparent;
    border: none;
    padding: 1rem 1.5rem;
    color: var(--tech-green);
    font-family: 'JetBrains Mono', monospace;
    font-size: 1rem;
    outline: none;
}

.email-input::placeholder {
    color: rgba(45, 212, 108, 0.4);
}

.email-input:focus {
    background: rgba(45, 212, 108, 0.05);
}

.scanner-line {
    position: absolute;
    top: 0;
    left: -100%;
    width: 50%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(45, 212, 108, 0.2), transparent);
    animation: scan 3s infinite linear;
    pointer-events: none;
}

.submit-btn {
    background: transparent;
    color: var(--tech-green);
    border: 1px solid var(--tech-green);
    padding: 0 2rem;
    border-radius: 4px;
    font-family: 'JetBrains Mono', monospace;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.2s;
    text-transform: uppercase;
    position: relative;
    overflow: hidden;
}

.submit-btn:hover {
    background: var(--tech-green);
    color: var(--text-main);
    box-shadow: 0 0 15px rgba(45, 212, 108, 0.4);
}

.submit-btn:active {
    transform: scale(0.98);
}

/* Success State */
.success-state {
    padding: 1.5rem 0;
    font-family: 'JetBrains Mono', monospace;
    font-size: 1rem;
    color: var(--tech-green);
    text-shadow: 0 0 10px rgba(45, 212, 108, 0.4);
    animation: fadeIn 0.5s ease-out forwards;
}

.success-text {
    font-weight: bold;
    letter-spacing: 0.05em;
}

/* Custom Tooltip Styling */
.custom-tooltip {
    display: none;
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    background: #000;
    border: 1px solid var(--tech-green);
    color: var(--tech-green);
    padding: 0.5rem 1rem;
    border-radius: 4px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    box-shadow: 0 0 10px rgba(45, 212, 108, 0.2);
    align-items: center;
    gap: 0.5rem;
    z-index: 100;
    animation: fadeIn 0.2s ease-out forwards;
}

.tooltip-icon {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 16px;
    height: 16px;
    background: var(--tech-green);
    color: #000;
    border-radius: 50%;
    font-size: 0.75rem;
    font-weight: bold;
}

/* Override default red validation styling for input */
.email-input:invalid {
    box-shadow: none;
    accent-color: var(--tech-green);
}

.email-input:focus:invalid {
    outline: 1px solid var(--tech-green);
}

.footer {
    display: flex;
    justify-content: space-between;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    color: var(--panel-border);
    margin-top: 3rem;
}

/* Animations */
@keyframes gridMove {
    0% {
        transform: perspective(500px) rotateX(60deg) translateY(0);
    }

    100% {
        transform: perspective(500px) rotateX(60deg) translateY(40px);
    }
}

@keyframes blink {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0;
    }
}

@keyframes scan {
    0% {
        left: -100%;
    }

    100% {
        left: 200%;
    }
}

@keyframes pulse {
    0% {
        opacity: 0.3;
        transform: translate(-50%, -50%) scale(0.95);
    }

    100% {
        opacity: 0.6;
        transform: translate(-50%, -50%) scale(1.05);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-5px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 1.5rem 1rem;
        /* Less padding on small screens */
    }

    .header {
        margin-top: 1rem;
        margin-bottom: 2rem;
    }

    .logo {
        max-width: 100%;
        /* Ensure it never expands beyond the screen */
        width: 280px;
        /* Scale down from 420px on mobile */
    }

    .title {
        font-size: 2.8rem;
        /* Smaller size for iPhone screens to prevent wrapping issues */
    }

    .newsletter-form {
        flex-direction: column;
    }

    .submit-btn {
        padding: 1rem;
    }

    .footer {
        flex-direction: column;
        gap: 0.5rem;
        align-items: center;
    }

    .system-status {
        font-size: 0.7rem;
    }
}