@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard/dist/web/static/pretendard.css');

:root {
    --main-bg-color: #f0f2f5;
    --card-bg-color: #ffffff;
    --primary-color: #1a237e; /* Navy */
    --accent-color: #ff7043;   /* Coral */
    --text-color: #333333;
    --border-color: #e0e0e0;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --glow-color: rgba(255, 112, 67, 0.5);
    --muted-text-color: #666666;
    --subtle-bg: #f9f9f9;
    --result-card-bg: #e8f5e9;
    --message-bg: #ffffff;
    --message-border: #d1d1d1;
    --pattern-color: rgba(0, 0, 0, 0.06);

    --font-family: 'Pretendard', 'Noto Sans KR', sans-serif;
}

[data-theme="dark"] {
    --main-bg-color: #0f121a;
    --card-bg-color: #151a24;
    --primary-color: #90a4ff;
    --accent-color: #ff9a6b;
    --text-color: #e6e9f2;
    --border-color: #2a3142;
    --shadow-color: rgba(0, 0, 0, 0.45);
    --glow-color: rgba(255, 154, 107, 0.35);
    --muted-text-color: #9aa3b2;
    --subtle-bg: #1c2230;
    --result-card-bg: #15241b;
    --message-bg: #121826;
    --message-border: #2a3142;
    --pattern-color: rgba(255, 255, 255, 0.06);
}

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

body {
    font-family: var(--font-family);
    background-color: var(--main-bg-color);
    color: var(--text-color);
    line-height: 1.6;
    padding: 2rem;
    background-image: radial-gradient(circle at 1px 1px, var(--pattern-color) 1px, transparent 0);
    background-size: 6px 6px;
}

.site-header {
    text-align: center;
    margin-bottom: 2.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
}

h1 {
    font-size: 2.5rem;
    color: var(--primary-color);
    font-weight: 700;
    text-shadow: 1px 1px 3px var(--shadow-color);
}

.theme-toggle {
    border: 1px solid var(--border-color);
    background: var(--card-bg-color);
    color: var(--text-color);
    padding: 0.5rem 1.2rem;
    border-radius: 999px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
    box-shadow: 0 6px 16px var(--shadow-color);
}

.theme-toggle:hover {
    transform: translateY(-2px);
    border-color: var(--accent-color);
}

.theme-toggle:focus-visible {
    outline: 3px solid var(--glow-color);
    outline-offset: 3px;
}

main {
    max-width: 800px;
    margin: 0 auto;
    display: grid;
    gap: 1.5rem;
}

.card {
    background-color: var(--card-bg-color);
    border-radius: 12px;
    padding: 1.5rem 2rem;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 15px var(--shadow-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px var(--shadow-color);
}

h2 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    border-bottom: 2px solid var(--accent-color);
    padding-bottom: 0.5rem;
}

input[type="text"],
textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-family: var(--font-family);
    resize: vertical;
    transition: border-color 0.3s, box-shadow 0.3s;
}

input[type="text"]:focus,
textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px var(--glow-color);
}

textarea {
    min-height: 120px;
    margin-bottom: 1rem;
}

.upload-area {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    background-color: var(--subtle-bg);
    margin-bottom: 10px; /* Add margin between upload areas */
}

.file-input {
    display: none; /* Hide the actual file input */
}

.upload-btn, .tone-btn {
    padding: 0.6rem 1.2rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.2s, box-shadow 0.3s;
}

.upload-btn {
    background-color: var(--primary-color);
    color: white;
}

.upload-btn:hover {
    background-color: #101a65;
    transform: translateY(-2px);
}

.file-name {
    color: var(--muted-text-color);
    font-style: italic;
}

.tone-selector {
    margin-top: 1rem;
}

.tone-selector p {
    margin-bottom: 0.7rem;
    font-weight: 500;
}

.tone-selector .tone-btn {
    background-color: var(--subtle-bg);
    color: var(--primary-color);
    margin-right: 0.5rem;
    margin-bottom: 0.5rem;
}

.tone-selector .tone-btn:hover, .tone-selector .tone-btn.active {
    background-color: var(--accent-color);
    color: white;
    box-shadow: 0 0 10px var(--glow-color);
    transform: translateY(-2px);
}

.result-card {
    background-color: var(--result-card-bg);
}

#coaching-results .placeholder {
    color: var(--muted-text-color);
    text-align: center;
    padding: 2rem 0;
}

.coached-message {
    background-color: var(--message-bg);
    border: 1px solid var(--message-border);
    border-left: 5px solid var(--accent-color);
    padding: 1rem;
    margin-bottom: 1rem;
    border-radius: 8px;
    animation: fadeIn 0.5s ease;
}

.coached-message p {
    white-space: pre-wrap;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Responsive Design */
@media (max-width: 600px) {
    body {
        padding: 1rem;
    }

    h1 {
        font-size: 2rem;
    }
}