/**
 * Demo Page Styles
 *
 * Terminal-style demo submission form with success overlay.
 *
 * @package Blackout
 */

/* ================================================================
 * Hero
 * ================================================================ */

.demo-hero {
    min-height: 50vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 10rem 2rem 4rem;
    position: relative;
    overflow: hidden;
}

.demo-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 40% 60%, var(--glow) 0%, transparent 50%),
                radial-gradient(ellipse at 60% 40%, var(--glow2) 0%, transparent 50%);
}

.demo-hero h1 {
    font-family: 'Syne', sans-serif;
    font-size: clamp(2.5rem, 6vw, 6rem);
    font-weight: 800;
    text-transform: uppercase;
    line-height: 0.9;
    position: relative;
    z-index: 1;
}

.demo-hero h1 span {
    color: var(--accent);
    display: block;
    text-shadow: 0 0 40px var(--glow);
}

.demo-hero p {
    margin-top: 1.5rem;
    color: #555;
    font-size: 0.8rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    position: relative;
    z-index: 1;
    max-width: 500px;
}

/* ================================================================
 * Layout (single-column centered)
 * ================================================================ */

.demo-layout {
    max-width: 800px;
    margin: 0 auto;
    border-top: 1px solid var(--border);
}

/* ================================================================
 * Form Panel
 * ================================================================ */

.demo-layout .form-panel {
    padding: 5rem;
    position: relative;
    background: radial-gradient(ellipse at 50% 30%, rgba(0, 230, 138, 0.03) 0%, transparent 60%);
}

/* ================================================================
 * Terminal Bar
 * ================================================================ */

.demo-layout .terminal-bar {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    margin-bottom: 3rem;
    padding: 1rem 1.5rem;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--border);
}

.demo-layout .terminal-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.demo-layout .terminal-dot.green {
    background: var(--accent);
    box-shadow: 0 0 6px var(--accent);
}

.demo-layout .terminal-dot.purple {
    background: var(--accent2);
    box-shadow: 0 0 6px var(--accent2);
}

.demo-layout .terminal-dot.dim {
    background: #333;
}

.demo-layout .terminal-text {
    font-size: 0.65rem;
    color: var(--accent);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-left: auto;
}

.demo-layout .terminal-cursor {
    width: 7px;
    height: 14px;
    background: var(--accent);
    animation: demo-blink 1s infinite;
}

@keyframes demo-blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

/* ================================================================
 * Form Title & Subtitle
 * ================================================================ */

.demo-layout .form-title {
    font-family: 'Syne', sans-serif;
    font-size: clamp(1.5rem, 2.5vw, 2.5rem);
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}

.demo-layout .form-sub {
    color: #555;
    font-size: 0.75rem;
    margin-bottom: 3rem;
    letter-spacing: 1px;
}

/* ================================================================
 * Form Inputs
 * ================================================================ */

.demo-layout .input-group {
    margin-bottom: 2rem;
}

.demo-layout .input-group label {
    display: block;
    font-size: 0.6rem;
    color: #444;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 0.5rem;
    transition: color 0.3s;
}

.demo-layout .input-row {
    display: flex;
    gap: 2rem;
}

.demo-layout .input-row .input-group {
    flex: 1;
}

#demo-form input,
#demo-form select,
#demo-form textarea {
    width: 100%;
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--border);
    color: var(--fg);
    font-family: 'JetBrains Mono', monospace;
    font-size: 1rem;
    padding: 0.6rem 0;
    outline: none;
    transition: all 0.3s;
    border-radius: 0;
    -webkit-appearance: none;
}

#demo-form select {
    background: url('data:image/svg+xml;utf8,<svg fill="%2300e68a" height="24" viewBox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"><path d="M7 10l5 5 5-5z"/></svg>') no-repeat right 0 center;
}

#demo-form textarea {
    resize: vertical;
    min-height: 100px;
    line-height: 1.6;
}

#demo-form input:focus,
#demo-form select:focus,
#demo-form textarea:focus {
    border-bottom-color: var(--accent);
    background: rgba(0, 230, 138, 0.03);
    padding-left: 0.5rem;
}

#demo-form input::placeholder,
#demo-form textarea::placeholder {
    color: #333;
}

/* ================================================================
 * Submit Button
 * ================================================================ */

.demo-layout .btn-submit {
    width: 100%;
    background: transparent;
    border: 1px solid var(--accent);
    color: var(--accent);
    font-family: 'Syne', sans-serif;
    font-size: 1.2rem;
    font-weight: 800;
    text-transform: uppercase;
    padding: 1.3rem;
    margin-top: 1rem;
    position: relative;
    overflow: hidden;
    transition: all 0.4s;
    letter-spacing: 2px;
    cursor: none;
}

.demo-layout .btn-submit::before {
    content: 'TRANSMIT';
    position: absolute;
    inset: 0;
    background: var(--accent);
    color: var(--bg);
    display: flex;
    align-items: center;
    justify-content: center;
    transform: translateY(101%);
    transition: transform 0.4s cubic-bezier(0.8, 0, 0.2, 1);
    font-size: 1.2rem;
    font-weight: 800;
    letter-spacing: 2px;
}

.demo-layout .btn-submit:hover::before {
    transform: translateY(0);
}

.demo-layout .btn-submit:hover {
    border-color: var(--accent);
    box-shadow: 0 0 30px rgba(0, 230, 138, 0.15);
}

/* ================================================================
 * Form Errors
 * ================================================================ */

#demo-form-errors {
    margin-top: 1.5rem;
    font-size: 0.75rem;
    color: #ff4444;
    letter-spacing: 1px;
    text-transform: uppercase;
    min-height: 0;
}

/* ================================================================
 * Success Overlay
 * ================================================================ */

#demo-success-screen {
    position: fixed;
    inset: 0;
    background: var(--bg);
    z-index: 10000;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.5s;
}

#demo-success-screen.active {
    opacity: 1;
    pointer-events: all;
}

#demo-success-screen h2 {
    font-family: 'Syne', sans-serif;
    font-size: clamp(2rem, 5vw, 4rem);
    color: var(--accent);
    text-transform: uppercase;
    text-shadow: 0 0 40px var(--glow);
}

#demo-success-screen p {
    margin-top: 1rem;
    color: #555;
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 2px;
    max-width: 500px;
    text-align: center;
    padding: 0 2rem;
}

#demo-success-screen .btn {
    display: inline-block;
    padding: 1rem 3rem;
    border: 1px solid var(--accent);
    color: var(--accent);
    font-family: 'Syne', sans-serif;
    font-size: 0.9rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 2px;
    background: transparent;
    cursor: none;
    transition: all 0.3s;
}

#demo-success-screen .btn:hover {
    background: var(--accent);
    color: var(--bg);
    box-shadow: 0 0 30px rgba(0, 230, 138, 0.15);
}

/* ================================================================
 * Responsive: 1200px+ (Desktop full-width premium)
 * ================================================================ */

@media (min-width: 1200px) {
    .demo-hero {
        padding: 12rem 2rem 5rem;
        min-height: 55vh;
    }

    .demo-hero h1 {
        font-size: clamp(3rem, 7vw, 7rem);
    }

    .demo-layout {
        max-width: 900px;
    }

    .demo-layout .form-panel {
        padding: 6rem;
    }
}

/* ================================================================
 * Responsive: 768px
 * ================================================================ */

@media (max-width: 768px) {
    .demo-hero {
        min-height: 35vh;
        padding: 7rem 32px 3rem;
    }

    .demo-hero h1 {
        font-size: clamp(1.8rem, 8vw, 3rem);
    }

    .demo-hero p {
        font-size: 0.65rem;
        max-width: 100%;
    }

    .demo-layout .form-panel {
        padding: 3rem 32px;
    }

    #demo-form input,
    #demo-form select,
    #demo-form textarea {
        font-size: 16px;
        overflow-wrap: break-word;
    }

    .demo-layout .input-row {
        flex-direction: column;
        gap: 0;
    }

    .demo-layout .btn-submit {
        font-size: 1rem;
        padding: 1rem;
        -webkit-appearance: none;
    }

    .demo-layout .terminal-bar {
        padding: 0.7rem 1rem;
        margin-bottom: 2rem;
    }

    .demo-layout .terminal-text {
        font-size: 0.55rem;
    }
}

/* ================================================================
 * Responsive: 400px
 * ================================================================ */

@media (max-width: 400px) {
    .demo-hero {
        padding: 6rem 24px 2rem;
    }

    .demo-hero h1 {
        font-size: clamp(1.5rem, 9vw, 2.5rem);
    }

    .demo-layout .form-panel {
        padding: 2.5rem 24px;
    }
}