/* ================= DESIGN SYSTEM VARIABLES & RESET ================= */
:root {
    /* Envy (Default) */
    --accent: #d4af37;
    --accent-glow: rgba(212, 175, 55, 0.08);
    --accent-glow-strong: rgba(212, 175, 55, 0.2);
    --bg-dark: #070707;
    --text-primary: #e6e6e6;
    --text-muted: #888888;
    --border-color: rgba(255, 255, 255, 0.05);
    --font-serif: 'Cormorant Garamond', serif;
    --font-sans: 'Inter', sans-serif;
    --font-mono: 'Space Mono', monospace;
}

/* Theme definitions */
body.theme-envy {
    --accent: #d4af37;
    --accent-glow: rgba(212, 175, 55, 0.06);
    --accent-glow-strong: rgba(212, 175, 55, 0.2);
}

body.theme-anxiety {
    --accent: #8a2be2;
    --accent-glow: rgba(138, 43, 226, 0.06);
    --accent-glow-strong: rgba(138, 43, 226, 0.2);
}

body.theme-anger {
    --accent: #d84315;
    --accent-glow: rgba(216, 67, 21, 0.06);
    --accent-glow-strong: rgba(216, 67, 21, 0.2);
}

body.theme-heartbreak {
    --accent: #dc143c;
    --accent-glow: rgba(220, 20, 60, 0.06);
    --accent-glow-strong: rgba(220, 20, 60, 0.2);
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: var(--font-sans);
    min-height: 100vh;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: background-color 1s ease;
}

/* ================= BACKGROUND ATMOSPHERE ================= */
.bg-gradient-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 50%, var(--accent-glow) 0%, transparent 75%), #060606;
    transition: background 1.5s ease;
    z-index: 1;
    pointer-events: none;
}

.bg-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: 50px 50px;
    background-image: 
        linear-gradient(to right, rgba(255, 255, 255, 0.008) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.008) 1px, transparent 1px);
    pointer-events: none;
    z-index: 2;
}

.bg-grain {
    position: fixed;
    top: -10%;
    left: -10%;
    width: 120%;
    height: 120%;
    background: transparent url('data:image/svg+xml,%3Csvg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg"%3E%3Cfilter id="noiseFilter"%3E%3CfeTurbulence type="fractalNoise" baseFrequency="0.8" numOctaves="3" stitchTiles="stitch"/%3E%3C/filter%3E%3Crect width="100%25" height="100%25" filter="url(%23noiseFilter)"/%3E%3C/svg%3E') repeat;
    opacity: 0.03;
    pointer-events: none;
    z-index: 10;
    animation: grain-animation 1s steps(4) infinite;
    will-change: transform;
    transform: translate3d(0, 0, 0);
}

@keyframes grain-animation {
    0%, 100% { transform: translate3d(0, 0, 0); }
    25% { transform: translate3d(-2%, -3%, 0); }
    50% { transform: translate3d(-1%, 2%, 0); }
    75% { transform: translate3d(2%, -1%, 0); }
}

.bg-vignette {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, transparent 40%, rgba(0, 0, 0, 0.8) 100%);
    pointer-events: none;
    z-index: 4;
}

/* Ambient artwork reflection in background */
.ambient-art-container {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate3d(-50%, -50%, 0);
    width: min(75vw, 75vh);
    height: min(75vw, 75vh);
    opacity: 0.04;
    mix-blend-mode: lighten;
    filter: blur(18px);
    pointer-events: none;
    z-index: 3;
    transition: opacity 1.5s ease;
    will-change: opacity;
}

.ambient-art-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    image-rendering: pixelated;
}

/* ================= HEADER SECTION ================= */
.header {
    position: relative;
    z-index: 15;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem 3rem;
    height: 80px;
    width: 100%;
}

.btn-back {
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0;
    transition: color 0.3s ease, transform 0.3s ease;
    opacity: 0.8;
}

.btn-back:hover {
    color: var(--accent);
    opacity: 1;
    transform: translateX(-3px);
}

.sound-toggle-container {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    color: var(--text-muted);
}

/* ================= MAIN CONTAINER ================= */
.main-container {
    position: relative;
    z-index: 10;
    flex-grow: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    width: 100%;
}

/* Common hidden utility with smooth transitions in mind */
.hidden {
    display: none !important;
    opacity: 0;
}

/* ================= HERO SECTION STYLING ================= */
.hero-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    max-width: 600px;
    animation: fade-in 1.2s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.hero-logo-container {
    width: 72px;
    height: 72px;
    margin-bottom: 2.5rem;
    position: relative;
}

.hero-logo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.8);
    image-rendering: pixelated;
    animation: float-logo 6s ease-in-out infinite alternate;
    will-change: transform;
    transform: translate3d(0, 0, 0);
}

@keyframes float-logo {
    0% { transform: translate3d(0, 0, 0) rotate(0deg); box-shadow: 0 0 20px rgba(0, 0, 0, 0.8); }
    100% { transform: translate3d(0, -6px, 0) rotate(2deg); box-shadow: 0 5px 25px var(--accent-glow-strong); }
}

.hero-title {
    font-family: var(--font-serif);
    font-size: clamp(2.2rem, 7vw, 3.8rem);
    font-weight: 300;
    letter-spacing: 0.18em;
    margin-bottom: 1rem;
    color: #ffffff;
    text-indent: 0.18em; /* To offset letter spacing on last character */
    transition: text-shadow 0.5s ease;
    text-shadow: 0 0 10px rgba(0,0,0,0.5);
    will-change: text-shadow;
}

.hero-tagline {
    font-family: var(--font-serif);
    font-size: clamp(0.95rem, 3.5vw, 1.15rem);
    font-style: italic;
    font-weight: 300;
    color: var(--text-primary);
    opacity: 0.85;
    letter-spacing: 0.05em;
    margin-bottom: 2.5rem;
    line-height: 1.6;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.4rem 1rem;
    border: 1px solid var(--border-color);
    background: rgba(255, 255, 255, 0.01);
    margin-bottom: 3rem;
    border-radius: 100px;
}

.badge-dot {
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background-color: var(--accent);
    box-shadow: 0 0 8px var(--accent);
    animation: pulse-dot 1.5s infinite alternate;
}

@keyframes pulse-dot {
    0% { transform: scale(0.8); opacity: 0.5; }
    100% { transform: scale(1.2); opacity: 1; }
}

.badge-text {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    letter-spacing: 0.18em;
    color: var(--text-muted);
    text-transform: uppercase;
}

.btn-join-wl {
    background: #ffffff;
    color: #060606;
    border: none;
    font-family: var(--font-sans);
    font-weight: 500;
    font-size: 0.8rem;
    letter-spacing: 0.2em;
    padding: 1.1rem 2.8rem;
    cursor: pointer;
    position: relative;
    border-radius: 2px;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), 
                letter-spacing 0.3s cubic-bezier(0.16, 1, 0.3, 1), 
                box-shadow 0.3s ease,
                background-color 0.3s ease;
    overflow: hidden;
}

.btn-join-wl:hover {
    transform: translateY(-2px);
    letter-spacing: 0.25em;
    background-color: #ffffff;
    box-shadow: 0 0 25px var(--accent-glow-strong);
}

.btn-join-wl:active {
    transform: translateY(0);
}

/* ================= REGISTRATION FORM SECTION STYLING ================= */
.form-section {
    display: flex;
    justify-content: center;
    width: 100%;
    animation: slide-up 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.form-card {
    background: rgba(10, 10, 10, 0.8);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 3rem 2.5rem;
    border-radius: 3px;
    max-width: 520px;
    width: 100%;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.7);
    transition: border-color 0.5s ease;
    will-change: transform, opacity;
    transform: translate3d(0, 0, 0);
}

.form-card:hover {
    border-color: rgba(255, 255, 255, 0.08);
}

.form-card-header {
    margin-bottom: 2.2rem;
}

.card-subtitle {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    letter-spacing: 0.2em;
    color: var(--text-muted);
    display: block;
    margin-bottom: 0.4rem;
}

.card-title {
    font-family: var(--font-serif);
    font-size: 1.8rem;
    font-weight: 300;
    letter-spacing: 0.05em;
    color: #ffffff;
}

.form-inputs {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.input-group label {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    letter-spacing: 0.15em;
    color: var(--text-muted);
}

.label-optional {
    font-size: 0.55rem;
    opacity: 0.6;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-prefix {
    position: absolute;
    left: 1rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-muted);
    pointer-events: none;
}

.input-wrapper input {
    width: 100%;
    background: rgba(255, 255, 255, 0.015);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
    padding: 0.85rem 1rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    border-radius: 2px;
    transition: all 0.3s ease;
}

.input-wrapper input::placeholder {
    color: rgba(255, 255, 255, 0.15);
}

.input-wrapper input:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.03);
    border-color: var(--accent);
    box-shadow: 0 0 10px var(--accent-glow);
}

#username {
    padding-left: 2rem; /* Add spacing for @ symbol */
}

.input-error {
    font-family: var(--font-mono);
    font-size: 0.58rem;
    color: #ff3b30;
    letter-spacing: 0.05em;
    margin-top: 0.2rem;
    display: none;
    animation: fade-in 0.3s ease forwards;
}

.divider {
    height: 1px;
    background: linear-gradient(to right, transparent, rgba(255, 255, 255, 0.08), transparent);
    margin: 2.2rem 0;
}

/* Checklist steps styling */
.steps-container {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.steps-title {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    color: var(--text-muted);
    text-transform: uppercase;
    margin-bottom: 0.4rem;
}

.steps-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1.1rem;
}

.step-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    transition: opacity 0.5s ease;
}

.step-item.disabled {
    opacity: 0.35;
    pointer-events: none;
}

.step-checkbox-wrapper {
    position: relative;
    width: 16px;
    height: 16px;
    margin-top: 0.2rem;
}

.step-checkbox {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.custom-checkbox {
    position: absolute;
    top: 0;
    left: 0;
    height: 16px;
    width: 16px;
    background-color: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* Checked state styling */
.step-checkbox:checked ~ .custom-checkbox {
    background-color: transparent;
    border-color: var(--accent);
    box-shadow: 0 0 8px var(--accent-glow);
}

.step-checkbox:checked ~ .custom-checkbox:after {
    content: '';
    position: absolute;
    left: 5px;
    top: 2px;
    width: 4px;
    height: 8px;
    border: solid var(--accent);
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.step-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-grow: 1;
    gap: 1rem;
}

.step-content.flex-column {
    flex-direction: column;
    align-items: stretch;
    gap: 0.6rem;
}

.step-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.step-label {
    font-size: 0.85rem;
    font-weight: 300;
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.4;
}

.step-btn {
    display: inline-block;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.65rem;
    letter-spacing: 0.1em;
    padding: 0.45rem 0.9rem;
    border-radius: 2px;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    white-space: nowrap;
}

.step-btn:hover {
    border-color: var(--accent);
    color: #ffffff;
    background: rgba(255, 255, 255, 0.02);
    box-shadow: 0 0 10px var(--accent-glow);
}

.step-btn:active {
    transform: scale(0.97);
}

/* Comment step special input field style */
.step-sub-input-container {
    width: 100%;
}

.step-sub-input-container input {
    width: 100%;
    background: rgba(255, 255, 255, 0.01);
    border: 1px solid rgba(255, 255, 255, 0.06);
    color: var(--text-primary);
    padding: 0.6rem 0.8rem;
    font-family: var(--font-sans);
    font-size: 0.78rem;
    border-radius: 2px;
    transition: all 0.3s ease;
}

.step-sub-input-container input::placeholder {
    color: rgba(255, 255, 255, 0.15);
}

.step-sub-input-container input:focus {
    outline: none;
    border-color: var(--accent);
    background: rgba(255, 255, 255, 0.02);
}

/* Final submit button */
.submit-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-muted);
    font-weight: 600;
    width: 110px;
}

.step-item:not(.disabled) .submit-btn {
    background: #ffffff;
    color: #060606;
    border: none;
    box-shadow: 0 0 15px var(--accent-glow-strong);
    width: 110px;
}

.step-item:not(.disabled) .submit-btn:hover {
    background: #ffffff;
    box-shadow: 0 0 20px var(--accent);
    transform: translateY(-1px);
}

/* ================= SUCCESS SECTION STYLING ================= */
.success-section {
    display: flex;
    justify-content: center;
    width: 100%;
    animation: fade-in 1.2s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.success-container {
    background: rgba(10, 10, 10, 0.85);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    padding: 4rem 3rem;
    border-radius: 3px;
    max-width: 480px;
    width: 100%;
    text-align: center;
    box-shadow: 0 35px 70px rgba(0, 0, 0, 0.8);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.success-logo-wrapper {
    position: relative;
    width: 80px;
    height: 80px;
    margin-bottom: 2.2rem;
}

.success-logo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    border: 1px solid var(--accent);
    z-index: 2;
    position: relative;
    image-rendering: pixelated;
}

.logo-pulse-ring {
    position: absolute;
    top: -5px;
    left: -5px;
    width: 90px;
    height: 90px;
    border-radius: 50%;
    border: 1px solid var(--accent);
    opacity: 0.3;
    animation: pulse-ring 3s cubic-bezier(0.16, 1, 0.3, 1) infinite;
    z-index: 1;
}

@keyframes pulse-ring {
    0% { transform: scale(0.9); opacity: 0.6; }
    100% { transform: scale(1.3); opacity: 0; }
}

.success-title {
    font-family: var(--font-serif);
    font-size: 2.8rem;
    font-weight: 300;
    letter-spacing: 0.22em;
    margin-bottom: 0.8rem;
    color: #ffffff;
    text-indent: 0.22em;
}

.success-subtitle {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    font-style: italic;
    font-weight: 300;
    color: var(--text-primary);
    opacity: 0.9;
    letter-spacing: 0.05em;
    margin-bottom: 2.5rem;
}

/* Waveform visualizer container */
.waveform-container {
    width: 100%;
    height: 80px;
    background: rgba(255, 255, 255, 0.01);
    border: 1px solid rgba(255, 255, 255, 0.03);
    border-radius: 2px;
    margin-bottom: 2.5rem;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

#waveform-canvas {
    width: 100%;
    height: 100%;
    display: block;
}

.visualizer-label {
    position: absolute;
    bottom: 6px;
    right: 10px;
    font-family: var(--font-mono);
    font-size: 0.48rem;
    letter-spacing: 0.15em;
    color: var(--text-muted);
    opacity: 0.6;
}

/* Summary details block */
.summary-details {
    width: 100%;
    border: 1px solid rgba(255, 255, 255, 0.03);
    background: rgba(255, 255, 255, 0.005);
    padding: 1.5rem;
    border-radius: 2px;
    display: flex;
    flex-direction: column;
    gap: 0.9rem;
    margin-bottom: 3rem;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.summary-label {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    letter-spacing: 0.15em;
    color: var(--text-muted);
}

.summary-value {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-primary);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.status-verified {
    color: var(--accent);
    text-shadow: 0 0 5px var(--accent-glow-strong);
    font-weight: bold;
}

.btn-reset {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.65rem;
    letter-spacing: 0.2em;
    cursor: pointer;
    transition: color 0.3s ease;
}

.btn-reset:hover {
    color: var(--accent);
}

/* ================= FLOATING EMOTION RESONANCE PICKER ================= */
.emotion-picker-widget {
    position: fixed;
    bottom: 2.2rem;
    right: 2.2rem;
    background: rgba(10, 10, 10, 0.8);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    padding: 1rem 1.2rem;
    border-radius: 4px;
    z-index: 100;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    animation: fade-in 2s ease forwards;
}

.picker-title {
    font-family: var(--font-mono);
    font-size: 0.52rem;
    letter-spacing: 0.2em;
    color: var(--text-muted);
    text-transform: uppercase;
}

.picker-options {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.picker-btn {
    background: transparent;
    border: none;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.65rem;
    letter-spacing: 0.1em;
    cursor: pointer;
    padding: 0.3rem 0.5rem;
    border-radius: 2px;
    transition: all 0.3s ease;
    text-align: left;
}

.picker-btn:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.03);
}

.picker-btn.active {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.05);
}

.picker-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    display: inline-block;
    transition: transform 0.3s ease;
}

.picker-btn.active .picker-dot {
    transform: scale(1.3);
}

.picker-dot.env { background-color: #d4af37; }
.picker-dot.anx { background-color: #8a2be2; }
.picker-dot.ang { background-color: #d84315; }
.picker-dot.hrt { background-color: #dc143c; }

/* ================= GLOBAL ANIMATIONS ================= */
@keyframes fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slide-up {
    from {
        opacity: 0;
        transform: translate3d(0, 20px, 0);
    }
    to {
        opacity: 1;
        transform: translate3d(0, 0, 0);
    }
}

/* ================= MOBILE RESPONSIVENESS ================= */
@media (max-width: 768px) {
    .header {
        padding: 1.5rem;
    }
    
    .hero-title {
        font-size: 2.8rem;
    }
    
    .hero-tagline {
        font-size: 1rem;
        padding: 0 1rem;
    }

    .form-card {
        padding: 1.5rem 1.25rem;
        backdrop-filter: blur(8px);
        -webkit-backdrop-filter: blur(8px);
    }

    .success-container {
        padding: 2rem 1.25rem;
        backdrop-filter: blur(8px);
        -webkit-backdrop-filter: blur(8px);
    }

    .emotion-picker-widget {
        bottom: 1rem;
        right: 1rem;
        left: 1rem;
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        padding: 0.8rem 1rem;
    }

    .picker-options {
        flex-direction: row;
        gap: 0.2rem;
    }

    .picker-title {
        display: none; /* Hide title on mobile to fit options */
    }

    .picker-btn {
        padding: 0.3rem 0.4rem;
        font-size: 0.58rem;
    }
}