/* FICHIER : shared/css/base.css */
* { 
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
/* ===== THEMES ===== */
:root {
    --bg-primary: #0f0f0f;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #252525;
    --text-primary: #e5e5e5;
    --text-secondary: #888888;
    --border: #333333;
    --success: #22c55e;
    --sidebar-width: 200px;
    --user-msg-bg: #252525;
    --btn-primary: #3a3a3a;
    --btn-primary-hover: #4a4a4a;
    --btn-primary-text: #e5e5e5;
}
[data-theme="light"] {
    --bg-primary: #f8f8f8;
    --bg-secondary: #ffffff;
    --bg-tertiary: #efefef;
    --text-primary: #2a2a2a;
    --text-secondary: #777777;
    --border: #e0e0e0;
    --user-msg-bg: #f0f0f0;
    --btn-primary: #e0e0e0;
    --btn-primary-hover: #d0d0d0;
    --btn-primary-text: #2a2a2a;
}
[data-theme="vert"] {
    --bg-primary: #f0f9f4;
    --bg-secondary: #ffffff;
    --bg-tertiary: #e8f5e9;
    --text-primary: #2e7d32;
    --text-secondary: #66bb6a;
    --border: #e8f5e9;
    --success: #22c55e;
    --sidebar-width: 200px;
    --user-msg-bg: #e8f5e9;
    --btn-primary: #c8e6c9;
    --btn-primary-hover: #a5d6a7;
    --btn-primary-text: #1b5e20;
}
[data-theme="bleu"] {
    --bg-primary: #f0f7fb;
    --bg-secondary: #ffffff;
    --bg-tertiary: #e3f2fd;
    --text-primary: #1976d2;
    --text-secondary: #42a5f5;
    --border: #e3f2fd;
    --success: #22c55e;
    --sidebar-width: 200px;
    --user-msg-bg: #e3f2fd;
    --btn-primary: #bbdefb;
    --btn-primary-hover: #90caf9;
    --btn-primary-text: #0d47a1;
}
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow: hidden;
    transition: background 0.3s, color 0.3s;
}
body.document-open,
body.document-open .main-content {
    overflow: visible;
}
.app-container {
    display: flex;
    height: 100vh;
    width: 100%;
}
.main-content {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}
/* ===== HAMBURGER BUTTON ===== */
.hamburger-btn {
    width: 40px;
    height: 40px;
    background: var(--bg-tertiary);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    padding: 8px;
    transition: all 0.2s;
}
.hamburger-btn span {
    width: 20px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s;
}
.hamburger-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.hamburger-btn.active span:nth-child(2) {
    opacity: 0;
}
.hamburger-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}
/* ===== LOADING SCREEN ===== */
.loading-screen {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.8);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 100;
}
.loading-screen.visible {
    display: flex;
}
.loading-content {
    text-align: center;
    color: #fff;
}
.loading-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--border);
    border-top-color: var(--text-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 16px;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}