:root {
    --primary-color: #1a2a6c;
    --secondary-color: #b21f1f;
    --accent-color: #fdbb2d;
    --bg-color: #f8f9fa;
    --card-bg: #ffffff;
    --text-color: #333;
    --text-muted: #666;
    --border-radius: 12px;
    --shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    padding: 40px 20px;
}

a {
    text-decoration: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

h1 {
    text-align: center;
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 40px;
    font-weight: 800;
    letter-spacing: -0.02em;
}

h3 {
    font-size: 22px;
    color: var(--primary-color);
    margin-bottom: 26px;
    font-weight: 600;
    letter-spacing: -0.02em;
}

/* Search Box */
.search-container {
    background: var(--card-bg);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin-bottom: 40px;
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    justify-content: center;
    align-items: center;
    border-top: 5px solid var(--accent-color);
}

.search-box {
    display: flex;
    gap: 10px;
    align-items: center;
}

.search-input {
    padding: 12px 20px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    width: 200px;
    outline: none;
    transition: var(--transition);
}

.search-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(26, 42, 108, 0.1);
}

.search-select {
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 8px;
    background: white;
    font-weight: bold;
}

.sbtn {
    padding: 10px 12px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn {
    padding: 10px 12px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(26, 42, 108, 0.3);
}

/* Volume Grid */
.vol-grid {
    display: grid;
    grid-template-columns: repeat(10, 1fr);
    gap: 10px;
}

@media (max-width: 900px) {
    .vol-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}

@media (max-width: 500px) {
    .vol-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.vol-item {
    background: var(--card-bg);
    border: 1px solid #ddd;
    padding: 15px 5px;
    text-align: center;
    border-radius: 8px;
    text-decoration: none;
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.02);
}

.vol-item:hover {
    background: var(--primary-color);
    color: white;
    transform: scale(1.05);
    z-index: 1;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

/* Volume View Header */
.view-header {
    text-align: center;
    margin-bottom: 30px;
}

.view-header h2 {
    font-size: 1.8rem;
    color: var(--primary-color);
}

/* Speech List */
.speech-list {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.speech-item {
    padding: 15px 15px;
    border-bottom: 1px solid #e1e1e1;
    display: flex;
    align-items: center;
    text-decoration: none;
    color: #444;
    transition: var(--transition);
}

.speech-item:last-child {
    border-bottom: none;
}

.speech-item:hover {
    background-color: #f9f9ff;
    padding-left: 25px;
}

.speech-no {
    font-weight: 500;
    color: var(--text-muted);
    width: 70px;
    text-align: center;
    letter-spacing: -0.5px;
    flex-shrink: 0;
}

.speech-title {
    flex-grow: 1;
    font-size:17px !important;
    font-weight: 500;
}

.speech-date-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-left: 10px;
}

/* Content View */
.content-card {
    background: var(--card-bg);
    padding: 40px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.meta-info {
    background: #f1f4f9;
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 30px;
    display: flex;
    justify-content: space-between;
    font-size: 0.95rem;
    border:#ddd solid 1px;
    border-left: 4px solid var(--primary-color);
}

.speech-body {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #222;
}

.speech-body p {
    margin-bottom: 1.5rem;
}

.action-bar {
    margin-top: 40px;
    display: flex;
    gap: 10px;
    justify-content: flex-end;
}

.btn-ebook {
    background: #999;
    padding: 6px 12px !important;
}

.btn-home {
    background: #999;
    padding: 6px 12px !important;
}

.btn-edit {
    background: #28a745;
    padding: 12px 22px !important;
}

.btn-delete {
    background: #dc3545;
    font-size: 16px;
    padding: 16px 22px !important;
}

.btn-back {
    background: #6c757d;
    float: left;
    padding: 12px 22px !important;
}

/* Editor */
.editor-container {
    margin-top: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
}

.form-control {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 8px;
}

/* Glassmorphism Sidebar or back button */
.back-btn-sticky {
    position: fixed;
    top: 40px;
    left: 40px;
    z-index: 100;
}

@media (max-width: 768px) {

    .container {
        max-width: 100%;
        margin: 0 auto;
    }

    h1 {
        text-align: center;
        font-size: 2.2rem;
        color: var(--primary-color);
        margin-bottom: 20px;
        font-weight: 800;
        letter-spacing: -0.02em;
    }    

    /* Volume View Header */
    .view-header {
        text-align: center;
        margin-bottom: 20px;
    }

    .view-header h2 {
        font-size: 1.6rem;
        line-height: 34px;
        letter-spacing: -0.5px;
        color: var(--primary-color);
    }

    /* Search Box */
    .search-container {
        background: var(--card-bg);
        padding: 12px;
        border-radius: var(--border-radius);
        box-shadow: var(--shadow);
        margin-bottom: 35px;
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
        justify-content: center;
        align-items: center;
        border-top: 5px solid var(--accent-color);
    }

    .search-container span {
        display: none;
    }

    .search-box {
        display: flex;
        gap: 10px;
        align-items: center;
    }

    .search-input {
        padding: 12px 16px;
        border: 1px solid #ddd;
        border-radius: 8px;
        font-size: 1rem;
        width: 100px;
        outline: none;
        transition: var(--transition);
    }

    .search-input:focus {
        border-color: var(--primary-color);
        box-shadow: 0 0 0 3px rgba(26, 42, 108, 0.1);
    }

    .search-select {
        padding: 6px;
        border: 1px solid #ddd;
        border-radius: 8px;
        background: white;
        font-weight: bold;
    }

    .sbtn {
        padding: 10px 10px;
        background: var(--primary-color);
        color: white;
        border: none;
        border-radius: 8px;
        font-weight: 500;
        font-size:13px;
        letter-spacing: -1px;
        cursor: pointer;
        transition: var(--transition);
    }
    /* Speech List */
    .speech-list {
        background: var(--card-bg);
        border-radius: var(--border-radius);
        box-shadow: var(--shadow);
        overflow: hidden;
    }

    .speech-no {
        font-weight: 500;
        color: var(--text-muted);
        width: 40px;
        text-align: center;
        letter-spacing: -0.5px;
        flex-shrink: 0;
    }

    .speech-item {
        padding: 8px 12px;
        line-height: 20px;
        border-top: 1px solid #e1e1e1;
        display: block;
        align-items: center;
        text-decoration: none;
        color: #444;
        transition: var(--transition);
    }

    .btn-ebook {
        background: #999;
        padding: 6px 10px !important;
        font-size:14px !important;
    }

    /* Content View */
    .content-card {
        padding: 6px;
        box-shadow: none;
    }

    .meta-info {
        background: #f1f4f9;
        padding: 12px;
        border-radius: 8px;
        margin-bottom: 30px;
        display: flex;
        justify-content: space-between;
        font-size: 15px;
        border-left: 4px solid var(--primary-color);
    }

    .speech-body {
        font-size: 1.1rem;
        line-height: 1.8;
        color: #222;
    }

    .speech-body p {
        margin-bottom: 1.5rem;
    }


}

/* Auth Bar */
.auth-bar {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 8px;
    margin-bottom: 20px;
}

.user-info {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.user-info strong {
    color: var(--primary-color);
}

.btn-login {
    background-color: #2563eb !important;
}

.btn-register {
    background-color: #059669 !important;
}

.btn-logout {
    background-color: #6b7280 !important;
}

.auth-bar .btn {
    padding: 6px 14px;
    font-size: 0.85rem;
}

@media (max-width: 768px) {
    .auth-bar {
        gap: 8px;
    }

    .user-info {
        font-size: 0.8rem;
    }
}